these are the heads in question https://store.gmperformanceparts.com...-88958698--%3E


i am doing a iron block 6.0L with forged internals (callies rods and wiseco pistons) and a turbonetics t78 turbo... i have prc 2.5 heads and a stock truck intake from a 2005 but i can get a good deal on a set of CNC'd L92 heads but i have to know something ASAP

what all is needed to swap from a stock 2005 setup to a L92 setup...wiring, fuel rails and injectors? or will the stock fuel rails and injectors work??

do they make a 2bar map for the intakes?? and were can i get one?? what about throttle body??

just trying to do some research before i get over my head ya know

here are the L92 flow chart
Lift------Intake (cfm)-----Exhaust (cfm)
0.200----154---------------100
0.300----222---------------136
0.400----266---------------166
0.500----309---------------189
0.600----345---------------202

and the PRC
Lift------Intake (cfm)-----Exhaust (cfm)
0.200----147---------------111
0.300----206---------------145
0.400----254---------------105
0.500----291---------------204
0.600----312---------------223


the intake side flows more on the L92's but the exhaust flows more on the PRC's

whats better???

 

i need to know something quick guys.. i don't want the deal to pass me up...

 

all depends on how much compression you can get. those heads flow GREAT. if i had a lq9 i would run them without looking back! i think wheatley still has a pair for sale in the classifieds brand new. check it out.

 

with FI in your future I would not worry about CnC, I would get the stock cheaper ones and some good springs, mild cam.