head help pp vs prc
12-28-2005, 11:24 AM
#1
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head help pp vs prc ok for a fm14-fm13 sized cam which head would be better?
prc...5.3l stage 2.5 heads....62 cc chambers with 2.4\1.575 valves
or
pp...6.0l ls6 style stage 2 heads heads with 59cc chambers and 2.02, 1.57 valves (mabye larger valves if possible)
i dont really plan on using a power adder but it could happen...and i dont daily drive the car.. it is a 2002 a4 t\a w\h 3500 stall and 3.73 gears both heads are within $200 of each other so its really just a matter of which head is gonna make the most power
prc...5.3l stage 2.5 heads....62 cc chambers with 2.4\1.575 valves
or
pp...6.0l ls6 style stage 2 heads heads with 59cc chambers and 2.02, 1.57 valves (mabye larger valves if possible)
i dont really plan on using a power adder but it could happen...and i dont daily drive the car.. it is a 2002 a4 t\a w\h 3500 stall and 3.73 gears both heads are within $200 of each other so its really just a matter of which head is gonna make the most power
12-28-2005, 11:31 AM
#2
!LS1 11 Second Club
My vote goes to the PRC's. PredatorZ is making great time with them. They flow very well through low mid and high lift.
I'd only consider PP's newly available CNC 243 (true ls6 castings) as an option from them (JMO).
I am biased towards TEA 1.5 5.3's
. Great budget head that flow as well as the PRC 2.5's while retaining the stock exhaust valve.
I'd only consider PP's newly available CNC 243 (true ls6 castings) as an option from them (JMO).
I am biased towards TEA 1.5 5.3's
. Great budget head that flow as well as the PRC 2.5's while retaining the stock exhaust valve.