2.8 rebuild - S-10 Forum
 
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post #1 of 5 Old 08-12-2015, 12:05 PM Thread Starter
Chewie46
 
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2.8 rebuild

Going to overhaul my 86 S10 Blazer 2.8. Not sure if i want to keep the tbi or replace it with carb and do away with ECM. Any thoughts?

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post #2 of 5 Old 08-12-2015, 05:05 PM
Maybe later.
 
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Re: 2.8 rebuild

It depends on what you want. I honestly wouldn't remove the TBI. It's a good reliable system that delivers good reliable power out of what is a small but gutsy little engine imo.

But if you want a carb, get a Weber 38DGES. I love mine on my 85. I'm not sure if the intake manifold is different from TBI to the 82-85 factory carb'd ones however.



I've had wayyy to many of these trucks. (Currently...on number 7)

1988 S-15 - 5.5/6 drop

1985 S10 Blazer 4WD

1998 Blazer ZR2 5 Speed!

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3 doors for 1 and a half whores
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He only bought one wheel. So every picture we see is going to be a pic where either the rear or front is conveniently out of frame.

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post #3 of 5 Old 08-13-2015, 09:14 AM
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Re: 2.8 rebuild

Suggestion:
Find a Camaro 3.4 to replace the 2.8. It's a bolt in and offers improved power/performance.
The TBI intake manifold is different than the older (82 to 85) 2 barrel intake.

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.
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post #4 of 5 Old 08-13-2015, 11:50 AM
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Re: 2.8 rebuild

I found a completely remanufactured motor on ebay, shipping included for about $800. You might check and see if that works for you. Otherwise, I would be very inclined to listen to maxx.

just a thought. Also, leave it as the truck was intended. TBI. Unless there are other issues. Emissions is the biggy I think of when changing.

85 S10 Durango 2.8L extcab rwd 36k actual miles.
"true wisdom is knowing you know nothing" Paraphrased from Socrates
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post #5 of 5 Old 08-13-2015, 04:44 PM
Awww..you ain't got shit!
 
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Re: 2.8 rebuild

I would stick with the TBI. It's gonna be better for all around daily driving. Better mileage and better starts. I've had the stock carb on the 2.8 as well as a Holley. The Holley made a lot of difference. I also used it on 3.4, but the best performance so far is the EFI TBI on the 3.4 with the 4.3 injectors on bored intake. Unquestionably. So you might want to try that option too.

I'd shitcan the 2.8 for a 3.4. Money is gonna be about the same.



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/
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