Originally Posted by dropanddrive03
Longer term I'm looking to kick some Shelby GT ass. I'll be adding a s/c but that's further down the road. For now I want all the pieces in place to make sure that adding a s/c will be as effective as possible. That answer your question?
If you wanna kick some Shelby ass (2013 Shelby ass) then you are in for a lot of modifications. Just to warn you, they recently tested a 2013 Shelby with the ONLY modification being an oval single blade TB and a canned tune...and the thing made 672 RWHP. Change that to a dyno tune with headers, exhaust, and an intake and that thing will safely make over 700 RWHP. They then tested a 2013 Shelby with a ONLY Kenne Bell 4.2 liter blower and a conversion to E85 and it made 29 lbs of boost, 985 hp, and 971 tq. Now I'm not gonna sit here and sing them praise, but I just want you to know what you're up against, lol!! Those engines are also built with all forged internals. And the OHC block is stronger than an OHV block as well.
So if you're serious about beating Shelby's, then you're looking at a built engine at some point. Because although some claim to be pushing 700+ RWHP on the stock block and stock internals, I doubt it will last very long regardless of how it's tuned. I'd say 600 safely with 650 max if you wanna push things. And even then you're up against VERY strong built engines that can push way past that.
As far as the cam choices. Like others have said you will need to contact your tuner and a good company for the cam. You're not gonna pick a cam off the shelf. Unless it comes in a already designed HCI package. Trickflow makes such a package. But you want a custom made cam. And the choice you make on the cam will have more of an impact on how well tied the engine is than any other component. There are people who even have to change cams depending on boost or other components that they may change. So I'd say save that for last.
Which is why I asked you what your performance goals are. Because nobody should just spit out cam profile numbers to you. So do this. Figure out how much money you wanna spend and what kind of combination you want. There are many different routes depending on compression, cubic inches, boost, etc. If you're gonna build a block with stronger internals then you might as well go stroked. Decide on a compression ratio. Find out what kind of boost you want (centrifugal or twin screw, single turb, twin turb) and how much you will be able to use safely with your compression, fuel, tuning, and internals. Find out what heads you're gonna use. And once you have all that info is when you find out advice on the type of cam you want.
Or if you want you can just ask a vendor which cam they recommend to give you good power for now and then upgrade in the future. But you want cam specs from a pro, not someone like myself or anyone else for that matter. Because your goals will be different from everyone else's.
With that, Lethal Racing, Comp Cams, and Trickflow are one of the cams I would choose. TSP also has cam choices so give them a look.