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This is a discussion on Lq9 heads within the Internal Engine forums, part of the LSx Technical Help Section category; Just wondering if anyone here has swapped out their stock ls1 heads for the lq9 truck heads? I understand these ...
08-29-2005, 05:16 PM #1DougLs1Guest
Just wondering if anyone here has swapped out their stock ls1 heads for the lq9 truck heads? I understand these heads have a larger combustion chamber and bolting them up to the ls1 lowers compression, making this combo great for forced induction. Anyone do it? If so what where your results?
09-04-2005, 09:06 PM #2DougLs1Guest
Not one person?
09-05-2005, 12:30 AM #3
09-05-2005, 09:03 PM #4
- Join Date
- Aug 2005
- 2000 TransAm WS6
yea there great for FI cars, and they have the same port design as the LS6 heads
good choice if your going the routeMike Berry
2000 TransAm WS6 A4
09-11-2005, 02:52 AM #5
They will lower your compression. Make sure to get the 317 cast. Not the knock off patriot casts. Use a GMMLS head gasket and ARP head studs and you will be good to go. Of course put some good springs.
09-11-2005, 09:55 AM #6
- Join Date
- Aug 2003
- Honolulu HI
- all bore 370 Trans Am
majority of the FI guys run 6.0 heads. Its the norm.