So I pulled the 2.8 from my Fiero..Put in 3.1 crank,bored 40 over and with higher compression pistons,444 cam and headers..Also ported and polished Plenum,runners and heads..The power increase was more than I planned on..I wasnt trying for a race car, just an improvement..For the low cost and not a bunch of time, it was well worth it..I jus wanted to post this for anyone else thinging of doing this..
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Pics please. And thank you for building a not so loved engine. I sure miss my 3.1! I had big plans for that engine on the rebuild.95 Beretta 3100 with 3400 intakes and TCE TB
High flow cat and a Magnaflow muffler
Grand Prix trans with 3.33FDR -
Its actually still the 2.8 engine, just stroked with a 3.1 crankshaft..I like the reliability of the 2.8 intake system and gaskets so I didnt use any of that stuff from a 3.1..I will post a few pics..Comment
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Isn't a 3.1 just a stroked 2.8 anyway? Making this a 3.1 after all?'89 Firebird, 3500 Turbo, T56, 9-bolt/4.11
'86 Fiero, 3500, 4-speedComment
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Yep, 2.8's and 3.1's are the same block.. all 3.1's are stroked 2.8's.Comment
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Yes, plus a good performance cam and 40 over high compression pistons..Its around a 3.3 liter now..Comment
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So it is above 3.2...lolComment
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Can those bores take .040 over and still last?Comment
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Yep. not much more though.. i've heard of .060 after a very thorough inspection but at that point it's just easier to start with a 3.4 block.Comment
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