3400 heads vs. 3.1

[91z24build]

Are the heads on the 3400 (LA1) different from the old 3.1L (LH0) heads.
I am looking to use the whole intake system off of a 3400 on a 1991 3.1L, mainly wondering if there is a difference in port sizes of the heads, and if it will even fit.

[SappySE107]

I never say this...but search. What you are asking is posted in flowsheets, pictures, swap articles,etc. Its called a hybrid motor,gen 3 top end swap.

[sil]

lol @ ben

ya dude the lho is 2nd gen the 3100, 3400 are 3rd gen
deffinatly searchign is in order, search and research till your eyes bleed

[Superdave]

for a more Jbody specific bit of info, check out www.domesticcrew.com/hybrid.html

and of course the best Jbody site in the world... www.V6Z24.com

[treeZ24]

you wont regret it. that and a lil higher lift/ more duration on the camshaft and you'll be a happy camper.

[91z24build]

Nevermind the conversion, I found a cheap l82 3100, I'm going to build.