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Old 10-03-2008, 09:19 AM
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How to wake up a 1986 2.8 Pontiac Fiero ?

How to wake up a 1986 2.8 Pontiac Fiero ?
the goal is to wake her up using the same 2.8 V6 engine
what can we do ?
any ideas ? suggestions ?
new defy !

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Old 10-03-2008, 11:26 AM
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Put a 3.1 In it will help alot. It's the same bolt pattern like the 2.8 and also lot better engine.
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Old 10-03-2008, 11:27 AM
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Yes i know
but the thing is to wake up that 2.8
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Old 10-03-2008, 11:34 AM
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Not much you can do without tearing into the shortblock. The usual trick is to bore and stroke, or use a 3.4 shortblock. If you're not keen on tearing into it, forced induction/nitrous is about your only really viable option. Even if you do all the "external" stuff you can like injectors, intake, TB, roller rockers, cold air, etc, you probably won't get much more than 5 hp.

A common combo is to use a 3.1 with a cam and some mild porting. That is usually good for a solid 170-180 hp. But, give your 2.8 about 7 psi of boost from a small turbo and you're looking at more like 250+

They're a nice little engine, I've owned several, but easy bolt-on performance isn't typical. go to www.60degreev6.com. They have some really great tech over there and the guys are good at squeezing some extra ponies from them.

Last edited by curtis73; 10-03-2008 at 12:01 PM.
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Old 10-03-2008, 11:45 AM
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There is another popular swap, a L67. 240hp stock
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Old 10-03-2008, 01:23 PM
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I swapped the TBI 2.8 in my son's 85 4WD Isuzu Troooper with a 3.4 from a 95 Firebird. Only thing I had to correct was the 3.4 block didn't have the mounting holes for a starter. It was a big improvement in power & MPG.
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Old 10-03-2008, 01:36 PM
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the supercharged 3800 also share the same bolt pattern.... and is a common swap in fierro's. I have a 2.8L in an S10- they suck. You can hop them up but for less money you can swap in a bigger better enigne and have more power and MPG.
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Old 10-03-2008, 02:09 PM
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LT1: http://dtcc.cz28.com/LT1build/index.htm
4.9: http://www.fieroaddiction.com/caddy49b.html
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Old 10-03-2008, 03:04 PM
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Yeah you can stick about anything GM makes into a fiero. A 4.3 would bolt up nice. But then again so would a 454. And then you could do wheelies!!!
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Old 10-03-2008, 04:31 PM
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Quote:
Originally Posted by Double_v23
Yeah you can stick about anything GM makes into a fiero. A 4.3 would bolt up nice. But then again so would a 454. And then you could do wheelies!!!
What 454 bolts up to the Fiero tranny
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Old 10-03-2008, 05:19 PM
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Quote:
Originally Posted by Jake_Dragon
What 454 bolts up to the Fiero tranny
There are adapters to put almost anything in a Fiero; SBC, BBC, Northstar, 3800, BOP. Its all been done before.
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Old 10-03-2008, 05:36 PM
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Quote:
Originally Posted by curtis73
There are adapters to put almost anything in a Fiero; SBC, BBC, Northstar, 3800, BOP. Its all been done before.
I know that, I have a SBC Fiero parked on my car port. Thats why I used a

The 2.8 is what it is, you get use to it or you buy something bigger.
I had an SE with a 2.8 and it was a blast to drive but didn't do so well in a straight line. My GT handles well and also kicks arse going in a straight line.
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Old 10-03-2008, 05:43 PM
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Ah.. gotcha.

Quick google search turned up this. http://www.angelfire.com/fl5/fiero/fierolinks_009.html

Looks like some handy links for the fiero crowd.
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Old 10-03-2008, 06:10 PM
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Quote:
Originally Posted by Jake_Dragon
I know that, I have a SBC Fiero parked on my car port. Thats why I used a

The 2.8 is what it is, you get use to it or you buy something bigger.
I had an SE with a 2.8 and it was a blast to drive but didn't do so well in a straight line. My GT handles well and also kicks arse going in a straight line.

Put Hemi in it!!!! I don't know if thats been done before.

Or do like Jake did



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Old 10-03-2008, 08:49 PM
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I often thought how cool it would be to put a Caddy 500 in it. Its a bit mismatched for the application, but I remember a guy who put a Caddy 500 in a beetle and it was fun.
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