Cam selection help
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Staging Lane
Joined: Jan 2006
Posts: 63
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From: Tinker AFB
Cam selection help Ok, I need help picking out a cam for my setup. Cam profiles are one of the things I have a hard time fully understanding. I've got LQ4 317 heads, Comp 918 springs, Moly pushrods, titanium retainers, and Pacesetter LT's. My goal is to get 420-450 rwhp. I'm not totally crazy about high revving engines so I want a cam that I won't have to rev the engine way up to make power. I don't want to completely kill my low-end power and I want good mid-range power. I also want to keep lift under .600 so I can still use my Comp 918's.
A couple cams I've looked at are:
TSP 233/239 .598/.603 (not sure if the 918's will work with this cam)
TSP 231/237 .598/.595
TSP 233/ 233 .595/.595
Any other suggestions are also welcome and highly appreciated.
A couple cams I've looked at are:
TSP 233/239 .598/.603 (not sure if the 918's will work with this cam)
TSP 231/237 .598/.595
TSP 233/ 233 .595/.595
Any other suggestions are also welcome and highly appreciated.
Check flow numbers associated with the heads you upgraded to. Contact the retailer, or someone who sells those heads and ask them for their opinion on cam specs for these heads. You can probably come up with a good custom grind to meet your criteria. The cams you are looking at are strong, but will have most of the power at your high RPM's (6000+). That's my opinion...Good luck
Unfortunately, the ramp rates of the cams that you listed are probably outside the realm of what would work best with 918s. Better to stick with Comp XE high lift lobes. You will still be able to hit your goals without the excessive lift. Keep in mind, the 317 heads have larger chambers than 241 and 243 heads and you will lose compression, hurting power. 425-450 rwhp takes lots of airflow and lots of cam. Since you're running 317s with lower compression, you're going to need a very big cam (duration-wise).
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
