View Full Version : GM 60degree '05+ 3500SFI heads
Berettaspeed
08-01-2007, 06:32 PM
Just wondering if any guys that work at dealers or junk yards that might be able to get any GM 3500 heads for me. im looking to get some soon. i know sometimes you get a bad bottom end and get the top end if possible. my buddy doesn't work at the dealer anymore so i have no hook ups. LOL
but if anyone could keep an eye out for me. not too many people like to crash these things.
Poncho
08-01-2007, 10:12 PM
i thought the older intake was incompatible w/ those heads?
BAD LS1
08-02-2007, 03:51 PM
i think he has the 3400 intake setup on it?
Berettaspeed
08-02-2007, 09:40 PM
yes i have an 03' 3400. the 3400 block works with the 3500 heads as the intake runners will bolt up. in 2000 they had a new design for 3100s and 3400s which are the same besides the block bore.
the 3500 heads flow better and will lower comprerssion slightly. 9.1:1 instead of 9.6:1
i dunno for sure, but this is the rumor.
Poncho
08-02-2007, 10:52 PM
yea I was worried about the intake manifold
A B4C Z
08-04-2007, 12:40 PM
IF i come across any ill keep you in mind. What about the 3.9 stuff is that compatable also?
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