95oldsVan Posted February 26, 2006 Report Share Posted February 26, 2006 I mainly mean intake manifold and heads.For example,will the older 3.1 intake manifold bolt up to a 3100 or 3400? Or will the later heads/intake manifold fit on the earlier 3.1 block? Was just curious,not planning anything to swap out or etc.Just looking for knowldege. Thanks. Quote Link to comment Share on other sites More sharing options...
cutlassdude96 Posted February 26, 2006 Report Share Posted February 26, 2006 you can put 3x00 heads and intake on the 3.1 but not the other why around Quote Link to comment Share on other sites More sharing options...
Guest donkeykongrape Posted February 26, 2006 Report Share Posted February 26, 2006 out of curiosity, would anyone happen to know how much power a 3400 heads on top of a 3.1 block would put out? I mean...it's not a 3100, it's not a 3400...it's...both Quote Link to comment Share on other sites More sharing options...
THe_DeTAiL3R Posted February 26, 2006 Report Share Posted February 26, 2006 The 3400 heads are the same as 3100 heads, same goes for the intake (except for the upper which has says "3400"). I would expect a 15-20hp gain with a newer 3100 or 3400 top end swap. Quote Link to comment Share on other sites More sharing options...
fastbird232 Posted February 26, 2006 Report Share Posted February 26, 2006 I thought only the 2000+ 3100 heads and intake were the same as their 3400 counterparts? Quote Link to comment Share on other sites More sharing options...
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