RickLowpez

i got a lq9 ,cam,fast 92mm.full bolt ons with prc heads milled 59cc on stock gaskets,11,1 compressionm so i wanna make power so im looking around at better heads . trick flows 225 and going to 11.5.1 compression im looking for 20=30 rwhp and equal torque any help would help

SLOXCAB

iTrader: (7)

Can't beat the price of the prc 2.5 and they flow really good

Sales2@Texas-speed

iTrader: (5)

Not really a fair fight between a ported GM casting and the TFS 225's, IMO....the PRC 5.3's do tow the line very well and make great power for a great price though! But if you really want a fair comparison, the PRC 227's should be rolled into the equation against the TFS heads

http://www.texas-speed.com/shop/item...=1068&catid=40

BlackGMC

iTrader: (31)

i love my prc 2.5s

RickLowpez

i knopw prc r great and the price is also good but im looking for whatever is next on the list as for a beter head.ive heard from other websites that a fully ported ls6 head is the up grade head but dont know. also is 11.5 comp. a 91 friendly comp?any tried it?

DBRODS

iTrader: (1)

If you have 59cc heads with a stock 0.051 gasket right now your compression is 11.7:1. You should be running 93 octane. This is assuming the pistons have a zero deck height which probably isn't the case. They probably stick .010 out of the hole so you compression is actually closer to 12.0:1.

fastrt

iTrader: (48)

true, but I thought stock gaskets are .054 to .060" makes a diff. you got lots of compression already. I have seen the prc 227 make 500 rwhp on a ls2 and a fine tune.

DBRODS

iTrader: (1)

Stock 6.0/6.2 3 layer and 5 layer are 0.051.

RickLowpez

yeah i got the gm 5 layer gaskets on it rite now and will probly use the 5 layer for the new heads

hirdlej

iTrader: (31)

I would go with a minimum a set of AFR heads. Otherwise a set of the Mast Motorsports 11deg 215cc heads. I'm waiting for a sponsor to have a 10% off anything sale and I'm going to pull the trigger on a set of the mast motorsports heads