Any 2.8 v-6ers in here? - All Things V6 - Firebird Nation

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Any 2.8 v-6ers in here?

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#1 Mr Dave

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Posted 10 April 2020 - 06:43 PM

Not seeing alot of posts for the mid 80's 2.8 engine.

Any good tips or mods for this engine?

#2 ZumpTA


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Posted 10 April 2020 - 08:14 PM

Not a good platform for power or fuel economy.  There are things to do but the return on investment is minimal.  You could buy a v8 3rd gen cheaper than what it would cost to build that thing to less  than '80s castrated v8 power, but at least the v8 had decent torque going for it.


Lots of old mod info on the web, like stroke it to 3.1L, larger throttle body, free-flow exhaust, cam, headwork, etc.  By the time it's done it's so far removed from what it was it's not the same engine, and grossly expensive for what you get out of it.


Here is an article that covers everything.  Pay very close attention to the last paragraph on the last page.



"There are two major products that come out of Berkeley: LSD and UNIX.
We don't believe this to be a coincidence."
-- Jeremy S. Anderson

"Man is the best computer we can put aboard a spacecraft...
and the only one that can be mass produced with unskilled labor."
-- Wernher von Braun

#3 Patches33001


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Posted 10 April 2020 - 11:13 PM

I’ll be honest, I didn’t even know it was possible to have a V6 as small as a 2.8... xD

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#4 sea dog

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Posted 11 April 2020 - 04:38 AM

If your 2.8 is a carb or TBI injection model, your pretty much up the creek without a paddle.


If you have a port fuel injected 2.8 you have 130 hp. Almost as much as a 5.0 carb engine. But much less torque then a 5.0 sbc.


So, as Tony pointed out above, if you want more performance, get a port fuel injected 5.0 or 5.7 sbc. Or better yet, go with the ls1 or other ls platform engine.


Aftermarket parts makers & sellers have long forgotten the 2.8 engine.

#5 EdKnecht


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Posted 11 April 2020 - 05:23 AM

The Fiero had a 2.8. The Fiero store has two cams for it as well as roller rockers. You can get maybe 250hp out of it but the big problem is the oiling system isn’t all that great if you want to squeeze any more out of it..

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