FRiCK

iTrader: (7)

Was wondering what would be best for my CTS-V. I'm looking at the PRC stage 2.5 5.3's and the PRC stage 2.5 243's.... I like the idea of the bump in compression on the 5.3's. Which head has the best runner shape for velocity as I'm staying N/A??

Was also looking into a cam, something on the smaller/stealthy side, to keep the caddy.... A caddy lol. Maybe a 224/220 .600/.600 116+2 on the XE-R lobes.

The car will also have 1 3/4" Kooks with cats, do u think 500rw is possible with this setup?

getusumws6

iTrader: (9)

either head is fine, you know you can have them mill the 243 head down. My 243's are at 61cc which is roughly 11.1.

The 224/220 cam an those heads are not going to come close to 500rwhp, you are honestly looking at 400ish rwhp numbers.

Is the cts-v a 5.7L?

pheer

iTrader: (3)

thought the CTS-V was an LS6...?

FRiCK

iTrader: (7)

Ohh damn I'm way off. Excuse me, I just got out of the mustang game. Still don't know what to expect with these motors. Lol I just want a set of cnc'd OEM casting heads, with about 11:1 and something in the area of a 220 cam on a 116 to keep the idle stockish and +2 to bring the curve down some. If 400 is all I'll get then so be it.

And yes. 05' LS6 car. Just got it 3 weeks ago, with a intake I ran 13.4 @ 111.