87 S10 4X4 Blazer - 2.8L Engine Rebuild or Swap - S-10 Forum
 
LinkBack Thread Tools
post #1 of 6 Old 12-06-2015, 02:26 PM Thread Starter
Registered Users
 
CADKraft's Avatar
 
Join Date: Apr 2011
Location: Encinitas, California
Age: 54
Posts: 3

User is: CADKraft is offline
Post 87 S10 4X4 Blazer - 2.8L Engine Rebuild or Swap

My beloved Blazer has a blown head gasket, possible cylinder damage, has been hot a few times and has high mileage 225K.

Looking for advice from an experienced enthusiast in rebuilding the motor.

Should I get a crate motor or a remanufactured motor?
Is there a bigger motor or stroker available? 3.1L or 3.4L?
Considering headers and a performance chip.
The manual tranny and 4WD both work great and are in good shape.
The 4.3L sounded like a good idea until I saw that on the 87 might need to swap the tranny and other parts.

Just trying to define the direction right now and would appreciate some feedback. ~Kelly

CADKraft is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 12-06-2015, 02:47 PM
Registered User
 
Join Date: Oct 2003
Location: The Nest
Age: 42
Posts: 2,127

User is: The_Raven is online now
Re: 87 S10 4X4 Blazer - 2.8L Engine Rebuild or Swap

To swap to a 4.3 requires swapping the trans on all years, not just 1987 when the original engine is anything other than a 4.3 in an S-series.

Yes, a 3.1 or 3.4 from F-bodies can be swapped in place of your 2.8L, to make it easy use your induction, oil pan and exhaust manifolds. You will also need to swap the water pump to retain the mechanical fan.

You also have the option right now since it sounds like the truck is not driveable in it's current condition, to pull the engine and tear it down for an inspection and possible rebuild. If the major mechanicals look to be in good shape, then freshening with new bearings and gaskets might be a good option. You could also swap out the crank and pistons to stroke it to a 3.1 if you did this.

Yukon: The daily driver
Tha toy: 1973 Datsun 240z 12.71 @115
Tha other Toy: 1923 T-Bucket
Another Toy: 1987 Buick Skyhawk
Typhony Old set-up: 1985 GMC Jimmy. 3.2L Turbocharged/Intercooled hybrid. 13.873 @ 99.08 Currently being reconstructed.


"If you're not living on the edge, You're taking up too much space."
The_Raven is online now  
post #3 of 6 Old 12-07-2015, 04:08 PM
Boozebag
 
Mad Max's Avatar
 
Join Date: Jun 2009
Location: Saipan (!)
Posts: 8,909

User is: Mad Max is offline
Re: 87 S10 4X4 Blazer - 2.8L Engine Rebuild or Swap

Raven has good suggestions...

Probably the fastest and least expensive is to find a good used 3.1 or 3.4 (3.4 out of a 93 - 95 Camaro/Firebird preferable) and install that. It will give you more power and is a pretty direct drop in.
There are a few small differences, but they are easy to handle.
If you do get to do this swap, continue this thread.
There are many who have done this and will be glad to offer support.

Edit... a good used block is called "Seasoned".
An over heated block = over seasoned...

S10 addiction:
1)'82 S10, 383, 700R4, Shorty
2) '85 S10, 3.4, 700R4 4x4 stretch cab (Redneck)
3) '90 S10 2.5, 5 speed shorty
4) '91 S10, Built 3.4, 5 speed shorty (Voodoo)
5) '92 S10, 2.5, 5 speed shorty, (Barbie)
6) '92 S10, 2.5 5 speed, Shorty
7) 1979 LUV, Buick 3.8 V6, TH 350 Shorty.
Mad Max is offline  
 
post #4 of 6 Old 12-08-2015, 12:07 PM
Awww..you ain't got shit!
 
jimmykicker's Avatar
 
Join Date: Nov 2005
Location: McCalla, Alabama
Age: 48
Posts: 3,238

User is: jimmykicker is offline
Re: 87 S10 4X4 Blazer - 2.8L Engine Rebuild or Swap

Sure will. Swap to 3.4 is pretty easy. It's all bolt in.

Sorry I've been away guys. Those fudgepackers at work blocked the site!


Sent from AutoGuide.com Free App



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
Originally Posted by Racer_X View Post
I had to cut my nut in half .
jimmykicker is offline  
post #5 of 6 Old 12-26-2015, 09:05 PM
Registered User
 
Join Date: Dec 2012
Age: 49
Posts: 92

User is: sparkybuoy is offline
Re: 87 S10 4X4 Blazer - 2.8L Engine Rebuild or Swap

Look on car-part.com for decent mileage 3.4 from a 94-96 camaro or firebird or pick a super high mileage piece and rebuild it - better to spend the money on machining and balancing a 3.4 instead - you jump from around 125 hp to 160ish - not emissions legal so don't tell the smog check guy it has a 3.4 instead of a 2.8 - if you get the fuel pressure regulator adjustability kit you can tailor the amount of fuel released from the injectors to fatten up just enough to compensate for the larger volume of 0.6 liters
sparkybuoy is offline  
post #6 of 6 Old 12-27-2015, 05:26 PM
Registered User
 
Join Date: Dec 2015
Age: 43
Posts: 1

User is: Love2race69 is offline
Not sure where you are from but I have a 2.8 and auto trans ready to drop in with 69,000 original miles that runs great. I'm doing a v8 swap on the truck. I was going to keep the truck original at one point and put some money in the motor . Now it's in my way so I would sell cheap
Love2race69 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the S-10 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.


Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome