Project: 84' Blazer - LQ4/4L60e Swap - S-10 Forum
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post #1 of 505 Old 07-16-2013, 10:34 PM Thread Starter
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Project: 84' Blazer - LQ4/4L60e Swap

Project: 84' Blazer - LQ4/4L60e Swap

I'm sure many of you have seen my blazer on this forum.



It's a 1984 S10 Blazer (Tahoe) with a 2.8L/700r4 that has become very tired and is in need of an LSx Swap!

I will be purchasing a 2002 6.0L LQ4 and 4L60e from a auto wrecker in the next week or so. It comes with all front accessories, wiring harness, ECU, and plastic shrouds. Its already put to the side and awaiting pick up.

As of now this is what I plan to buy for the swap.

Parts list:
KWik - Alt and PS bracket
Kwik - A/C mount w/ sanden compressor
Stainless Works - 1-7/8 LT Headers
CPW - Radiator w/Fans, Shroud & A/C Condenser
CPW - A/C condenser and lines
CPW - Wiring Harness
Shift Works: Mechanical Speedometer Kit Tailhousing
Holley LS Valve Covers - Black
Holley - 302-1 GM LS Retro-fit Aluminum Oil Pan
Lokar - Midnight Series Shifter

I want to keep all factory gauges, which is why I have that tailhousing in my parts list. My main priority is to get the truck running and able to move under its own power by Xmas this year. Once that is done, I will work on the cosmetic touches, such as valve covers, tailhousing, lokar shifter, A/C, trans rebuild etc... As the engine has about 120,000miles I wouldn't be surprised if I rebuild down the road, but like I said, the main priority is to get it running.

I hope the Stainless Works headers fit without needing too much frame modification. Will I be the first one to try it???

Once I have the engine in I will deal with the fuel system. I'm sure I will have many questions to do with this...

So far I have only taken a bit of my front end off. I hope to have the 2.8L and everything else removed from the engine compartment by the end of the week.





I will be putting in an order with Jared at CPW tomorrow for the LT's, Rad kit, and A/C shit. I will also order the Holley pan and KWik PS and Alt bracket at the same time.

Stay tuned for progress!

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post #2 of 505 Old 07-16-2013, 10:41 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

hell yeah. glad to see another 1st gen blazer being built
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post #3 of 505 Old 07-17-2013, 02:25 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Holley pan and KWik bracket have been ordered!
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post #4 of 505 Old 07-17-2013, 02:53 AM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

That is one fine example of a 1st gen that is clean as a whistle!!!!! I am droooooooling!

2002 Xtreme Blazer- Lq4, ls3 heads, 222/242 .602/.615 118+4, zl1 blower/lid, 2.4" upper, ID1000s @95%DC, e85, SW Longtubes, 4200#, no e.t. yet. WILL KILL ANY 4L60E INSTALLED BEHIND IT!!!
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post #5 of 505 Old 07-17-2013, 08:02 AM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Looks like a great plan. My advice is rebuild the engine now. You're not gonna want to pull it all back apart later to redo it all again like I did...
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post #6 of 505 Old 07-17-2013, 09:54 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Quote:
Originally Posted by calebmcclellan View Post
Looks like a great plan. My advice is rebuild the engine now. You're not gonna want to pull it all back apart later to redo it all again like I did...
I'd love to, but I don't have enough money in my budget at this point. That will be down the road.
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post #7 of 505 Old 07-17-2013, 10:01 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Quote:
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That is one fine example of a 1st gen that is clean as a whistle!!!!! I am droooooooling!
Thank you Sir!
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post #8 of 505 Old 07-17-2013, 10:40 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Parts Ordered:

KWik - Alt and PS bracket - ORDERED
Kwik - A/C mount w/ sanden compressor - ORDERED
Stainless Works - 1-7/8 LT Headers - ORDERED
CPW - Radiator w/Fans, Shroud & A/C Condenser - ORDERED
CPW - A/C condenser and lines - ORDERED
CPW - Wiring Harness
Shift Works: Mechanical Speedometer Kit Tailhousing
Holley LS Valve Covers - Black
Holley - 302-1 GM LS Retro-fit Aluminum Oil Pan - ORDERED
Lokar - Midnight Series Shifter

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post #9 of 505 Old 07-17-2013, 10:55 AM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Can't wait to see how the headers fit. I have a first gen pickup I want to try them in. Do the early blazers have the perches on the frame for the motor mounts like the 2nd gen? Your blazer is clean and subtle, I like it.
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post #10 of 505 Old 07-17-2013, 11:03 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

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Can't wait to see how the headers fit. I have a first gen pickup I want to try them in. Do the early blazers have the perches on the frame for the motor mounts like the 2nd gen? Your blazer is clean and subtle, I like it.
Ill take some photos of the frame rails once I remove the engine so you can verify.
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post #11 of 505 Old 07-17-2013, 11:23 AM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Nice truck! I wish mine was that clean. I love seeing first gen Blazer builds with LSX's. Take lots of pictures
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post #12 of 505 Old 07-17-2013, 11:39 PM Thread Starter
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Nice truck! I wish mine was that clean. I love seeing first gen Blazer builds with LSX's. Take lots of pictures
I'll try to take as many as I can!
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post #13 of 505 Old 07-19-2013, 12:43 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Nothing much new here, I've taken it quite slowly lately because I dont have any parts yet.

I will be paying for the engine and trans this weekend and it will be delivered early next week.

I've taken the whole front clip off and am ready to start unbolting the engine and trans as most of the wiring is out of the way.









More photos to follow as I make more progress.
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post #14 of 505 Old 07-23-2013, 10:35 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

The engine and trans are now in my possession!!!

I removed the front accessories and manifolds last night. Once I get some bolts, I will mount the engine to my engine stand and then continue removing my 2.8L.

I'll post some pictures later this evening.
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post #15 of 505 Old 07-24-2013, 01:00 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

How it was dropped off:






I'll be running a 4.8L flexplate to avoid matting problems with the 4L60e:



After tonight, this is how it sits:

Ready to pull the 2.8L



I got some bolts to mount the 6.0L to the stand









I removed the EGR components and I'm now looking for a block off plate as I will be running the LT's. Have any of you used this one ??



Should I remove the engine oil lines running from the rear of the pan? or should I keep them??



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post #16 of 505 Old 07-24-2013, 01:57 AM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

The oil lines is the oil cooler. Run one if you want to. On the egr I just cut the tube off and welded a washer in there and welded it up solid. You could also put a freeze plug in the hole or I'm sure someone sells a block off for it
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post #17 of 505 Old 07-24-2013, 05:25 PM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

I'm assuming its a bad idea to completely block them off? Does the CPW rad have ports for oil cooler lines?
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post #18 of 505 Old 07-24-2013, 07:12 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

The new pan will have the correct plate over the oil cooler holes if you don't want to use it. I don't think cpw radiator has ports for them.

2002 Xtreme Blazer- Lq4, ls3 heads, 222/242 .602/.615 118+4, zl1 blower/lid, 2.4" upper, ID1000s @95%DC, e85, SW Longtubes, 4200#, no e.t. yet. WILL KILL ANY 4L60E INSTALLED BEHIND IT!!!
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post #19 of 505 Old 07-24-2013, 07:42 PM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

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The new pan will have the correct plate over the oil cooler holes if you don't want to use it. I don't think cpw radiator has ports for them.
Thanks!
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post #20 of 505 Old 07-25-2013, 12:54 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Goodbye 2.8L!!









Tomorrow I'm going to degrease the entire frame and firewall to get it ready for when it comes time to drop the 6.0L in.

I may try to mock the engine up with the DIY mounts from SD before all my parts come. The only problem is that I need the headers and pan to ensure fitment... so I am at a bit of a stand still.

That's all for now...
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post #21 of 505 Old 07-25-2013, 08:34 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Looking good man. Looks like you have a good jump on this project.

If you want to sell those oil cooler lines let me know!

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post #22 of 505 Old 07-25-2013, 08:39 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

I think jtjasper2002 uses the oil cooler lines. He might have pics of them and how they are installed if you want to try to use them.

2002 Xtreme Blazer- Lq4, ls3 heads, 222/242 .602/.615 118+4, zl1 blower/lid, 2.4" upper, ID1000s @95%DC, e85, SW Longtubes, 4200#, no e.t. yet. WILL KILL ANY 4L60E INSTALLED BEHIND IT!!!
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post #23 of 505 Old 07-25-2013, 09:24 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

God im loving these 1 st gen blazer builds
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post #24 of 505 Old 07-26-2013, 01:00 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Thanks for info and compliments guys!

I got the frame rails degreased and pressure washed tonight. Ill give them another go and try to get everything down to bare metal before I paint anything.
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post #25 of 505 Old 07-26-2013, 01:14 AM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

wish you weren't a ferry ride away. Hell, id drive to Vancouver to help out. Keep it up!

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post #26 of 505 Old 07-26-2013, 09:43 AM Thread Starter
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wish you weren't a ferry ride away. Hell, id drive to Vancouver to help out. Keep it up!
Yea that's too bad any help would be great!

Could someone post a few pictures of their CPW engine mounts with a tape measure beside it. I have suicidedoors DIY kit and I would like a general idea of how long the tabs should be and where they should be welded on the mounting plate.

Thanks!
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post #27 of 505 Old 07-29-2013, 02:14 PM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

I haven't really made much progress, as I'm waiting on the parts to arrive. I do have a few questions though....

1. How much do I have to notch my crossmember when using the Holley Retrofit pan??
2. What do you guys do with the brake lines once you've notched it?
3. Do you Blazer guys have to mod the crossmember? or can I leave mine stock in the stock location??



I tried out my stock driveshaft in the new 4L60e and the splines match up!! If I can I will use my drive shaft as a guide to where the engine will actually sit. This will save me from having to shorten it. This all depends on clearances in the engine bay.
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post #28 of 505 Old 07-29-2013, 04:42 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

The holley pan I don't think you have to do anything for unless YOU want more room. I moved my brake line to the top of the cross member. I didn't mod my cross member but some do to tip engine down more without pan hitting it. I have a 2nd gen so I don't even know if anything applies to yours, lol.

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post #29 of 505 Old 07-30-2013, 01:46 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Yea, I wish someone else had documented a blazer build with these components!! Nothing seems to be the same with these trucks...

Can anyone tell me what this tube is that runs from one head to the other? Is is a steam vent??



I took the coils off tonight and began cleaning up the engine. What do you recommend to clean the flaking paint off the cast block??



The valve covers were super oxidized when I got them. They turned out okay so far, still lots of work to go with the scotchbrite pad...

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post #30 of 505 Old 07-30-2013, 02:55 AM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Yep it is a steam vent just goes to a fitting on the radiator.

2002 Xtreme Blazer- Lq4, ls3 heads, 222/242 .602/.615 118+4, zl1 blower/lid, 2.4" upper, ID1000s @95%DC, e85, SW Longtubes, 4200#, no e.t. yet. WILL KILL ANY 4L60E INSTALLED BEHIND IT!!!
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post #31 of 505 Old 07-30-2013, 03:44 AM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Take it off the throttle body and go strait to the radiator
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post #32 of 505 Old 07-30-2013, 08:15 PM Thread Starter
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Quote:
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Take it off the throttle body and go strait to the radiator
I've done some reading on it and don't really understand why people are rerouting it to the upper rad hose... Can I not just keep it how it is??

I will be running the stock TB for now. Is this mod only for people running aftermarket TB's, or is there a benefit to it??
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post #33 of 505 Old 07-30-2013, 09:52 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

I had the same thing with my lq4. I just used a wire brush and a wire wheel on a drill to knock off the heavy stuff. Then I used paint striper and and wire wheeled again. It all came off really well. Oh in the corners of the webing I used a dremel with a sanding cone to get the hard spots. Then used vht engine primer(3 coats) then I used vht Chevy orange engine paint (3 coats) and then vht engine clear coat ,3 coats.

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post #34 of 505 Old 07-30-2013, 10:48 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

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I've done some reading on it and don't really understand why people are rerouting it to the upper rad hose... Can I not just keep it how it is??

I will be running the stock TB for now. Is this mod only for people running aftermarket TB's, or is there a benefit to it??
This is a free mod. I don't know if it would really be a power producer but if you do use it, I assume that it would heat the intake air that much more. I am in Michigan have never used it and winter doesn't seem to affect not having it on there. It also cleans up the engine bay that little bit more. I run it straight to the radiator. My new TB doesn't even have a spot for it. I have the opposite problem of too much heat in my engine bay as it is.

2002 Xtreme Blazer- Lq4, ls3 heads, 222/242 .602/.615 118+4, zl1 blower/lid, 2.4" upper, ID1000s @95%DC, e85, SW Longtubes, 4200#, no e.t. yet. WILL KILL ANY 4L60E INSTALLED BEHIND IT!!!
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post #35 of 505 Old 08-02-2013, 03:40 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Good to know!! Thanks for the help guys.

I bought a can of aerosol aircraft stripper to strip my block. So far its made my life a hell of a lot easier. The old flaking engine enamel has basically melted off. Once I get it all stripped I'm just going to paint it in a low gloss black DTM rust paint.

On another note I'm heading to the states in the next few days to pick up all my swap goodies

Pictures to come!
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post #36 of 505 Old 08-03-2013, 06:20 PM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

I'm starting to think about my fuel system and I would like to run new lines with AN fittings. What is the most economical way to do it?

Should I buy a kit like this Russell one?

Russell Complete EFI Universal Fuel System Kits 641605

Or should I piece together the parts??

Will I need to get a new in tank sending unit?
How much line would I need to run a complete system front to back?
What size line should I run?

Any fuel system advice is welcome, as I'm brand new to this shit!
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post #37 of 505 Old 08-03-2013, 09:56 PM Thread Starter
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post #38 of 505 Old 08-06-2013, 12:17 AM Thread Starter
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post #39 of 505 Old 08-06-2013, 06:36 AM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Im running a second gen 2dr blazer tank and sending unit in my sway and i just went with the nylon hoses like factory and got the tool and everything to install the fittings it was cheaper than goin with the braided line even tho it looks so much nicer, im sure 30 feet is enough hose length thats what i had seen in other treads and it would be best to get a sending unit from a 89 blazer and just get a intank pump from a camaro and month it on new sending unit
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post #40 of 505 Old 08-06-2013, 04:25 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

To the OP. As far as the steam vent fitting goes, you want to get a Coolant hose "Tee" from JagsThatRun (JTR) it makes everything so much easier and it has a Coolant air bleeder, A vent fitting for that steam port on the heads, and a sight glass to make sure all the air is out.

My LSX Swap- https://www.s10forum.com/forum/f213/f...swap-o-504055/

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post #41 of 505 Old 08-06-2013, 10:00 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

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Originally Posted by 84blaze View Post
Got my parts!
was going to ask where you came over at. I am pretty close to the border on the BC side. Let me know if you come this way again or need a place to send stuff to. Also, do you have any LS books? S/A publications how to swap an LS into anything is a great cheap book. You can also find an LQ9 manual online for free that has all the torque specs.

Jason

2000 GMC Jimmy 2wd 2 door / LQ9, L92 heads, 224/230 cam and LS3 intake, She has been parted, stripped and retired.
1998 Pontiac Firebird Formula, engine from the Jimmy and a built t56
2006 Trailblazer SS
2000 Olds Bravada- SOLD
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post #42 of 505 Old 08-06-2013, 10:23 PM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

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Originally Posted by Catrell92 View Post
To the OP. As far as the steam vent fitting goes, you want to get a Coolant hose "Tee" from JagsThatRun (JTR) it makes everything so much easier and it has a Coolant air bleeder, A vent fitting for that steam port on the heads, and a sight glass to make sure all the air is out.
^This is exactly what I did with mine. Don't bother with the pretty ss lines like the link you posted.

As far as the fuel system goes, I bought the ss braided lines from summit as well as the AN fittings and adapters. It was a little insurance I figured that I can leave if I ever do with a FI setup in the future.


Just a little tip, try to stay away from flashy parts that don't offer anything but aesthetics... You'll burn a hole in you're pocket fast and have a non running swap truck.
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post #43 of 505 Old 08-07-2013, 11:11 PM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

Quote:
Originally Posted by Catrell92 View Post
To the OP. As far as the steam vent fitting goes, you want to get a Coolant hose "Tee" from JagsThatRun (JTR) it makes everything so much easier and it has a Coolant air bleeder, A vent fitting for that steam port on the heads, and a sight glass to make sure all the air is out.
After looking at my CPW rad I believe there is a separate bung for the steam vent to be routed to... Is this correct?? Its below the upper rad hose bung.
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post #44 of 505 Old 08-07-2013, 11:12 PM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

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Im running a second gen 2dr blazer tank and sending unit in my sway and i just went with the nylon hoses like factory and got the tool and everything to install the fittings it was cheaper than goin with the braided line even tho it looks so much nicer, im sure 30 feet is enough hose length thats what i had seen in other treads and it would be best to get a sending unit from a 89 blazer and just get a intank pump from a camaro and month it on new sending unit
I'll read into that for sure. Thanks!
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post #45 of 505 Old 08-07-2013, 11:15 PM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

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Originally Posted by moon509 View Post
was going to ask where you came over at. I am pretty close to the border on the BC side. Let me know if you come this way again or need a place to send stuff to. Also, do you have any LS books? S/A publications how to swap an LS into anything is a great cheap book. You can also find an LQ9 manual online for free that has all the torque specs.

Jason
I crossed at the peace arch and went to my address in Blaine, WA. I'll definitely keep you in mind if I ship anything else this way.

I was looking at a few online and was thinking of picking up a few of them.

I already downloaded that LQ9 PDF and will be using it when it comes time to rebuilding the engine.
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post #46 of 505 Old 08-07-2013, 11:17 PM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

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Originally Posted by xmbreezy View Post
^This is exactly what I did with mine. Don't bother with the pretty ss lines like the link you posted.

As far as the fuel system goes, I bought the ss braided lines from summit as well as the AN fittings and adapters. It was a little insurance I figured that I can leave if I ever do with a FI setup in the future.


Just a little tip, try to stay away from flashy parts that don't offer anything but aesthetics... You'll burn a hole in you're pocket fast and have a non running swap truck.
Good advice. I was just wondering it that kit would be a better place to start rather than piecing the parts together. Also, looking to do it with good parts that wont fail on me.
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post #47 of 505 Old 08-08-2013, 02:05 AM
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Re: Project: 84' Blazer - LQ4/4L60e Swap

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Good advice. I was just wondering it that kit would be a better place to start rather than piecing the parts together. Also, looking to do it with good parts that wont fail on me.
Either way you will have to buy a cheap fitting for the steam vent hole on radiator. Plug or barb, might as well use a $1 barb hook hose from engine to radiator and your done no piecing together anything. If you fill the engine with coolant thru the upper radiator hose 99% of the air will be gone out of system on first warmup cycle. That tee is nice if the fitting on radiator wasn't available. Might be more aesthetically pleasing to look at. It is your creation though so either way as long as you are hooked up you are good to go!

2002 Xtreme Blazer- Lq4, ls3 heads, 222/242 .602/.615 118+4, zl1 blower/lid, 2.4" upper, ID1000s @95%DC, e85, SW Longtubes, 4200#, no e.t. yet. WILL KILL ANY 4L60E INSTALLED BEHIND IT!!!
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post #48 of 505 Old 08-09-2013, 12:21 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

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Originally Posted by longboxdime View Post
Either way you will have to buy a cheap fitting for the steam vent hole on radiator. Plug or barb, might as well use a $1 barb hook hose from engine to radiator and your done no piecing together anything. If you fill the engine with coolant thru the upper radiator hose 99% of the air will be gone out of system on first warmup cycle. That tee is nice if the fitting on radiator wasn't available. Might be more aesthetically pleasing to look at. It is your creation though so either way as long as you are hooked up you are good to go!
Yea, I plan to just run it directly to this port:



Thanks for your help!
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post #49 of 505 Old 08-09-2013, 12:27 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

PARTS!!!

CPW Radiator


A/C Condensor


Intake, Exhaust, Water pump, and Oil pan gaskets


KWik PS and Alt bracket


KWiK A/C high mount


Holley Retro Fit Pan






Stainless Works LT 1-7/8 Headers


CPW bolt in notch




A/C parts (Lines, compressor, and accumulator)


Suicidedoors DIY LSx Mounts




That's it for now!
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post #50 of 505 Old 08-09-2013, 12:31 AM Thread Starter
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Re: Project: 84' Blazer - LQ4/4L60e Swap

When mounting the CPW rad in a 1st gen core support what do you do? The instruction manual that it came with is for a 2nd gen that has different mounts than the 1st gen.

Are any 1st gen guys running this rad?


This is what I'm working with:





These are the studs on the rad that will be used for mounting


The instructions deal with relocating round rubber bushings that allow those studs to slide into, which my core support does not have...
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