KOOSWS6

iTrader: (1)

How much boost will the Patriot Heads take (ls6 stage 3). I will be rebuilding a ls1 with low compression with a 72mm turbo.

TurboAv

iTrader: (6)

That's still based on a stock GM casting with a 1/4" deck thickness. AFR's, ETP's, Trickflow's, Darts, have thicker decks for lots of boost. 3/4" if I remember correctly. I would think 10-12 would be safe on stock heads would be ok, but after that I would get different heads. Another thing to remember is that the Darts are pretty cheap and have that thick deck. Do a little bowl work and a good valve job and you are into them less than $2g's.

KOOSWS6

iTrader: (1)

That helps Thanks

theblur98ss

iTrader: (71)

kyle ran 23 or 26lbs through his patriots. I'd keep it lower though to be safe as stated above.

black01_WS6

iTrader: (13)

243's and head studs are a must with boost. I wouldn't trust them over 12-15lbs.

elias_799

iTrader: (8)

i would get some lq9 heads if you are working on a budget. i would stick with a head that has big combustion chamber, 72cc and up. you want a big combustion chamber because it will prevent knock better then a lower cc head on a same CR motor.

BigRich954RR

iTrader: (1)

15 psi on stock head casting here . i have seen 21 psi used on them before but i wouldnt try and stay below 18

EPP

iTrader: (22)

We've run 16 psi quite often with Patriot's stock thickness heads with ATI ProCharger superchargers, and we've never had a problem at that boost level.
This Corvette has seen a brutal environment on a road course with 16 psi of boost and Patriot heads. http://www.exoticperformanceplus.com...Car.php?car=54
Same car now with an F-1C. http://www.exoticperformanceplus.com...Car.php?car=40 Bob

james562

iTrader: (35)

Are you still running the patriots with the new blower @18-20lbs?

1/2 ARP studs or OEM size?

What head gaskets?