Tsp giant in 408 
Tsp giant in 408
I don't know the specs of the giant, but I had a modified one made for my l92 setup before I went FI. I think it was 251/255 6xx/6xx with lsx/lsk lobes to help on the exhaust side. Patriot golds
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If you're running l92 heads, I would get a l92 specific cam to help the exhaust side of these heads. From what I've seen, they usually have 10+ more degrees of duration on the exhaust side.
We, as well as many other shops, have tested these combos extensively and know that you don't have to have 10º+ of split to make the power with these heads.
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I'm not saying he won't make power Matt, but with a set of heads like this where the intake side flows soo much better than the exhaust side, it would be beneficial to have a cam compensate for this.
I understand why you said it, but testing has shown that they don't need a huge split to make the power 
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COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
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Valve Lift/// Intake L92/// Exhaust L92 Intake/// Exhaust Flow%+- vs. Intake
0.100/// 72/// 63/// 87.5
0.200/// 148/// 126/// 85.1
0.300/// 212/// 162/// 76.4
0.400/// 264/// 189/// 71.6
0.500/// 302/// 205/// 67.9
0.600/// 322/// 214/// 66.5
0.700/// 316/// 221/// 69.9
Valve Lift/// Intake AFR 205/// Exhaust AFR 205/// Exhaust Flow%+- vs. Intake
0.100/// 140/// 112/// 80
0.200/// 200/// 170/// 85
0.300/// 251/// 203/// 80.9
0.400/// 281/// 221/// 78.6
0.500/// 292/// 226/// 77.4
0.600/// 298/// 230/// 77.2
An optimal cam for one set of heads will work for another set of heads, but it will be far from optimal for another set of heads.
Last edited by PowerShift408; Feb 4, 2009 at 08:14 PM.
Well GM High Tech Performance magazine in it's March '09 issue did an article on L92-LS3 heads on Comp Cams cam recommendations. the article was about VVT, however the two cams Comp speced were good for nonVVT L92 heads. One cam was 218/232 .563/.575 and the other was 222/236 .566/.578. To quote the article"If these splits seem drastic, that is just the nature of L92 or LS3 heads."
IMHO L92 heads need a big split to take advantage of their potential ,small splits give only mediocre results at best. I mean if Comp Cams doesn't know what to recommend then who does?
IMHO L92 heads need a big split to take advantage of their potential ,small splits give only mediocre results at best. I mean if Comp Cams doesn't know what to recommend then who does?
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I didnt have a L92 top end but i loved the Giant in my old car. With a better set of heads and a 85mm or larger MAF I would have been well into the 500s. But I there are people running the giants in 370s with the L92 set up and doing fine. Just all about what you want. But a cam designed for the heads u want or have SHOULD give you the numbers you want and the most outta both.