Someone told me that a good mod for the car would be to put 3.4 liter heads on my 3.1. Will this make any sort of difference or should I get 3.1 heads from and auto yard and have them port and polished? Whisch would be the best? Thanks for any info or advice.

~Josh~

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1992 Firebird
3.1 Liter V6
K&N Filter, everything else stock, for now!!!

 

Hi Josh,
I am one of those people that preach THERE IS NO REPLACEMENT FOR DISPLACEMENT.
Because I went whole hog & did the complete swap.
I can only say save your effort if your engine is in good shape (now), search for the 3.4 complete running engine in a wrecking yard and toss it under your current hood. Here's how.
http:/www.thirdgen.org/messgboard/Forum16/HTML.001462.html.
That'll be another nickle
Josh, you already have the 3.4 heads. There is no difference between your 3.1 heads than my 3.4 except I have better valve springs and matching retainers. You cannot bore out the 3.1 to equal a 3.4
It is a beefier block to start with (than a 3.1 engine).
Save the effort, make sure what you have is in great shape, especially the tranny (all of us 2.8->3.4 swappers lose the tranny soon after, me including!).
Read the thread and ask your questions. Bye


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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

[This message has been edited by KED85 (edited July 28, 2001).]