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Found a major flaw in the h3 oil pan in a S10 !


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Old 07-01-2008, 12:45 AM   #1
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Found a major flaw in the h3 oil pan in a S10 !

The automatic transmission can't be removed with out raising the cab. Since the pan is so close to the crossmsmber, the transmission can't be tilted to get the top bolt loose or slide the bellhousing back enough to clear the flywheel without hitting the firewall. In order to raise the cab, the front fenders/hood have to come off (as well as the grill and bumper to get the fender bolts loose).

Last edited by v8power : 07-01-2008 at 12:46 AM.
Old 07-01-2008, 12:52 AM   #2
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Re: Found a major flaw in the h3 oil pan in a S10 !

yeah, it does suck. still looking for an easy solution....
Old 07-01-2008, 08:01 AM   #3
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Re: Found a major flaw in the h3 oil pan in a S10 !

Oh chit, thats a good catch v8!That could be a problam
Old 07-01-2008, 08:37 AM   #4
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Re: Found a major flaw in the h3 oil pan in a S10 !

It's the same way with a T56 too. I had to jack up my cab to get my tranny out. if you split the tranny and bellhousing with the 6 speed it can be done without lifting the cab. An automatic would be more of a headache
Old 07-01-2008, 09:01 AM   #5
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by v8power
The automatic transmission can't be removed with out raising the cab. Since the pan is so close to the crossmsmber, the transmission can't be tilted to get the top bolt loose or slide the bellhousing back enough to clear the flywheel without hitting the firewall. In order to raise the cab, the front fenders/hood have to come off (as well as the grill and bumper to get the fender bolts loose).
Good catch, although it doesn't suprise me. Speaking of H3 oil pans, what oil filters are you guys running? I was at the auto parts store last night and they only had listings for 2007 Hummers, not the 2008 H3's...
Old 07-01-2008, 09:25 AM   #6
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Re: Found a major flaw in the h3 oil pan in a S10 !

Ls2 pan will let you...Just slap the crossmember a little with a sledge hammer to "smooth" it down a little.
Old 07-01-2008, 09:37 AM   #7
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Re: Found a major flaw in the h3 oil pan in a S10 !

i just tore mine down, and ran into a similar problem, with the t56, transmission came off, i just had to unbolt it from the block then rotate it about 90* so that the top of the bell housing would clear the cab

definitely all going back in as one piece, using a QTP lift plate that bolts in place of the valley cover.
Old 07-01-2008, 09:59 AM   #8
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Re: Found a major flaw in the h3 oil pan in a S10 !

i believe the filter number im running is a mobil 1 filter. PN: M1-113
Old 07-01-2008, 10:58 AM   #9
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Re: Found a major flaw in the h3 oil pan in a S10 !

I have a H3 pan on a 5.3. When I put the motor in I made the slots on the motor mounts 3/8 of an inch longer to move the motor back that much more. I have had the tranmission out a couple of times with no problems. All I did was role the lip under on the cab before the motr went in.
Old 07-01-2008, 04:02 PM   #10
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Re: Found a major flaw in the h3 oil pan in a S10 !

I have to do this with a stock 5.3 truck pan anyway. Its not just the H3 pan.
Old 07-01-2008, 04:03 PM   #11
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Re: Found a major flaw in the h3 oil pan in a S10 !

thats why you do like i did.. a SAS, then you have no cross members under youe motor. i can have my oil pan off in 10 min
Old 07-01-2008, 07:29 PM   #12
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Re: Found a major flaw in the h3 oil pan in a S10 !

haha, ya that what I did....actually the SAS was first, so putting the V8 in was a breeze.
Old 07-02-2008, 01:21 AM   #13
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Re: Found a major flaw in the h3 oil pan in a S10 !

Hope I dont sound stupid asking, but what is "SAS"?

So, if I understand this correctly, the H3 pan clears the x-member with no mods but you have trouble removing the tranny. If you slot the mounts 3/8", that's enough to solve that problem?

Is slotting the mounts 3/8" enough for the truck pan to fit w/o x-member mods? Based on the Oil Pan sticky, it looks like the truck pan sump is about 1.25" to 1.5" longer. Seems like the 3/8" slot and a minor cut in the x-member would provide the clearance. Anyone tried that?
Old 07-02-2008, 09:56 AM   #14
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Re: Found a major flaw in the h3 oil pan in a S10 !

im thinking if i wait long enough jared will make one.
Old 07-02-2008, 06:04 PM   #15
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Re: Found a major flaw in the h3 oil pan in a S10 !

SAS=Solid Axle Swap got rid of the crappy 4x4 IFS with a MUCH stronger Dana 60 front axle...well, thats what I did. V8+42s+IFS=BOOOOOOOM
Old 07-02-2008, 06:21 PM   #16
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by 98LSSOMO
Hope I dont sound stupid asking, but what is "SAS"?

So, if I understand this correctly, the H3 pan clears the x-member with no mods but you have trouble removing the tranny. If you slot the mounts 3/8", that's enough to solve that problem?

Is slotting the mounts 3/8" enough for the truck pan to fit w/o x-member mods? Based on the Oil Pan sticky, it looks like the truck pan sump is about 1.25" to 1.5" longer. Seems like the 3/8" slot and a minor cut in the x-member would provide the clearance. Anyone tried that?
I had to slot the mounts 3/8 so that the oil pan would clear the cross member. But I had NO trouble getting the transmission out.
Old 07-02-2008, 07:40 PM   #17
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Re: Found a major flaw in the h3 oil pan in a S10 !

I put my tranny in with the motor already installed without any problems. I do have the seam bent up on mine though.

Jamie
Old 07-02-2008, 10:25 PM   #18
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Re: Found a major flaw in the h3 oil pan in a S10 !

I would also like to add to this.

On my 97 'noma with 2wd ext cab. 5.3/4l60E. I am too running the Hummer Pan and so far other than lifting the cab to get the engine in. I noticed that the brake line that runs across the backside of the crossmember is not being pinched but the bots that hold the mounting bracket for the brakeline are touching the oil pan and need to be removed and the line to be relocated either up or down. just a note
Old 07-02-2008, 11:19 PM   #19
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Re: Found a major flaw in the h3 oil pan in a S10 !

I just pull the brake lines to route behind the oil pan
Old 07-03-2008, 09:17 AM   #20
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Re: Found a major flaw in the h3 oil pan in a S10 !

I had to move the brake lines aswell. It looks like I will have the chance to practice pulling the transmission out again. Stupid torque converter wont lock up.
Old 07-03-2008, 02:59 PM   #21
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Lightbulb Re: Found a major flaw in the h3 oil pan in a S10 !

just a thought. And i know that we all pretty much bought the hummer pan to avoid notching the frame. But What if we notched the frame foward about an 1" to 1.5" around the front of the pan, that way we are able to use the slotted holes to move the engine foward for more room we we shell out a transmission.

What do you guys think.
Old 07-03-2008, 05:55 PM   #22
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Re: Found a major flaw in the h3 oil pan in a S10 !

1) can you take the tranny crossmember off and let the motor rotate down? or is this already done when trying to get the top tranny bolts loose?

2) could you not cut an access hole in the cab and just pull the carpet back for the few times you need to service the tranny outside the truck?
Old 07-03-2008, 07:35 PM   #23
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Re: Found a major flaw in the h3 oil pan in a S10 !

I've got to wait another week to drive the beast!
Old 07-03-2008, 07:57 PM   #24
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Re: Found a major flaw in the h3 oil pan in a S10 !

Question... What if the engine mounts lowered the engine about 3/8"?
Our new mounts are ready to go.
Old 07-03-2008, 08:06 PM   #25
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Re: Found a major flaw in the h3 oil pan in a S10 !

If you use the h3 pan,you still wont be able to tilt the motor back without the oilpan hitting the crossmember if you didnt notch it.
Old 07-04-2008, 12:13 PM   #26
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Re: Found a major flaw in the h3 oil pan in a S10 !

I think it would be easier just to take the motor and trans out together just like it goes in together.
Old 07-04-2008, 12:14 PM   #27
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Re: Found a major flaw in the h3 oil pan in a S10 !

Like the age old saying in the automotive field do the job once do it right the first time.
Old 07-04-2008, 01:23 PM   #28
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by 97 SS 350
Question... What if the engine mounts lowered the engine about 3/8"?
Our new mounts are ready to go.
Then the pan would be 3/8 below the crossmember. I may just start notching the crossmembers again and use the cheaper truck pans. It would make everything easier down the road for the customer. We all know that the trans will eventually come out to be rebuilt or change converters. The seviceability means more to me then notching the crossmember and the pan hanging down an 1 1/2".
Old 07-04-2008, 02:33 PM   #29
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by v8power
Then the pan would be 3/8 below the crossmember. I may just start notching the crossmembers again and use the cheaper truck pans. It would make everything easier down the road for the customer. We all know that the trans will eventually come out to be rebuilt or change converters. The seviceability means more to me then notching the crossmember and the pan hanging down an 1 1/2".
So the pan hanging down 3/8" below the crossmember is bad, but 1-1/2" is good?
Old 07-04-2008, 03:03 PM   #30
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Re: Found a major flaw in the h3 oil pan in a S10 !

yep. If I'm going to bust the pan, I want to tear the fucker offf !!!!
Old 07-04-2008, 03:41 PM   #31
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Re: Found a major flaw in the h3 oil pan in a S10 !

Weld something to the bottom of the crossmember that is 1/2" thick
Old 07-04-2008, 04:07 PM   #32
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Re: Found a major flaw in the h3 oil pan in a S10 !

Why not weld something 1 1/2"? I've never had any problem with the truck oil pan. I would'nt suggest lowering it alot though.
Old 07-04-2008, 05:01 PM   #33
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by 97 SS 350
So the pan hanging down 3/8" below the crossmember is bad, but 1-1/2" is good?
If you only had something hanging down less then a half of an inch, I don't think you'd be careful about not hitting anything. Where on the other hand you had something hang down an inch and a half, I think you'd be very careful. So yes, less could be worst. Plus I think he was also looking at the cost differance between the 2 pans
Old 07-04-2008, 05:42 PM   #34
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by v8power
Why not weld something 1 1/2"? I've never had any problem with the truck oil pan. I would'nt suggest lowering it alot though.
Redneck...
Old 07-05-2008, 12:30 AM   #35
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by 97 SS 350
Redneck...
(Jared)

Last edited by v8power : 07-05-2008 at 12:34 AM.
Old 07-05-2008, 12:31 AM   #36
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by v8power
(Jared)
Old 07-05-2008, 12:39 AM   #37
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Re: Found a major flaw in the h3 oil pan in a S10 !

back atcha

Last edited by CPWire : 07-05-2008 at 12:41 AM.
Old 07-05-2008, 12:52 AM   #38
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by poconojoe
If you only had something hanging down less then a half of an inch, I don't think you'd be careful about not hitting anything. Where on the other hand you had something hang down an inch and a half, I think you'd be very careful. So yes, less could be worst. Plus I think he was also looking at the cost differance between the 2 pans
Cost really isn't an issue. I will have just as much in labor cost notching the crossmember as buying the H3 pan . I'm just thinking of the labor cost involved in removing the transmission with an H3 pan and no notch. It would take on average, 2hrs to remove the front fenders,hood,bumper and grill safely without damage and then 3 hrs. to re-install it. Thats a 5 hr difference between having a H3 pan and no notch . YOU CAN STILL NOTCH THE CROSSMEMBER AND USE THE H3 PAN ! if your worried about the truck pan. I just think it needs to be notched regardless on what pan you use. You will have 2 hrs labor in notching up front vs. 5 hrs down the road and taking a chance on damaging the paint by removing the front clip .
Old 07-05-2008, 12:54 AM   #39
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Re: Found a major flaw in the h3 oil pan in a S10 !



How do you like my fireworks !
Old 07-05-2008, 07:46 AM   #40
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by v8power
Cost really isn't an issue. I will have just as much in labor cost notching the crossmember as buying the H3 pan . I'm just thinking of the labor cost involved in removing the transmission with an H3 pan and no notch. It would take on average, 2hrs to remove the front fenders,hood,bumper and grill safely without damage and then 3 hrs. to re-install it. Thats a 5 hr difference between having a H3 pan and no notch . YOU CAN STILL NOTCH THE CROSSMEMBER AND USE THE H3 PAN ! if your worried about the truck pan. I just think it needs to be notched regardless on what pan you use. You will have 2 hrs labor in notching up front vs. 5 hrs down the road and taking a chance on damaging the paint by removing the front clip .
Is the notch about the same size, no mater which pan you plan on installing? Is there any pictures on the forum of how big the notch has to be? I did look but didn't see any. Would you bother to use the H3 pan, if you had no intent of lowering the truck?
Old 07-05-2008, 06:53 PM   #41
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by v8power
Cost really isn't an issue. I will have just as much in labor cost notching the crossmember as buying the H3 pan . I'm just thinking of the labor cost involved in removing the transmission with an H3 pan and no notch. It would take on average, 2hrs to remove the front fenders,hood,bumper and grill safely without damage and then 3 hrs. to re-install it. Thats a 5 hr difference between having a H3 pan and no notch . YOU CAN STILL NOTCH THE CROSSMEMBER AND USE THE H3 PAN ! if your worried about the truck pan. I just think it needs to be notched regardless on what pan you use. You will have 2 hrs labor in notching up front vs. 5 hrs down the road and taking a chance on damaging the paint by removing the front clip .
NOOO SHITTTT!
Old 07-05-2008, 07:43 PM   #42
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by born2fly
NOOO SHITTTT!
Old 07-07-2008, 12:26 PM   #43
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by 97 SS 350
Question... What if the engine mounts lowered the engine about 3/8"?
Our new mounts are ready to go.
Is this incorporated in the new mounts?
Old 07-07-2008, 10:29 PM   #44
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Re: Found a major flaw in the h3 oil pan in a S10 !

I just pulled the transmission out of mine again today. It took an hour and a half from start to finish. I dont know what yall are doing wrong. Maybe you should buy the right tools for the job.
Old 07-07-2008, 10:51 PM   #45
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Re: Found a major flaw in the h3 oil pan in a S10 !

lol im sure v8power "has the right tool"
Old 07-08-2008, 12:58 AM   #46
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Re: Found a major flaw in the h3 oil pan in a S10 !

If he does. Then why is it so hard for him to get the job done?
Old 07-08-2008, 09:19 AM   #47
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Re: Found a major flaw in the h3 oil pan in a S10 !

Wow...

I admit it is definitely a tight area, but It isn't a show stopper.
Old 07-08-2008, 10:30 AM   #48
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by 97 SS 350
Wow...

I admit it is definitely a tight area, but It isn't a show stopper.
I agree. The hardest bolt to get out on mine is the top. And its not rocket science.
Old 07-08-2008, 03:51 PM   #49
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Re: Found a major flaw in the h3 oil pan in a S10 !

not trying to be a dick, but you do realize all trucks are different right? Just because your truck might be easy doesn't mean someone elses isn't. I have my motor all the way back.....you cant get to some of the bellhousing bolts, plane and simple. I have to put my motor/trans in together.
Old 07-08-2008, 05:21 PM   #50
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Re: Found a major flaw in the h3 oil pan in a S10 !

Quote: Originally Posted by horsepwraddict
not trying to be a dick, but you do realize all trucks are different right? Just because your truck might be easy doesn't mean someone elses isn't. I have my motor all the way back.....you cant get to some of the bellhousing bolts, plane and simple. I have to put my motor/trans in together.
Yes I do realize that ALL vehicles are different. Hell I realize it everyday, when I go to work. If he is such a great builder/mechanic, why does he take the fenders off. Why not just loosen or remove the 6 cab mounts and raise the cab a few inches?



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