Cam Choice

[Drag SGT]

For those of you who have noticed my other posts, I'm rebuilding my SoGT's engine. So far I have my rods (Oliver) pistons (JE) and Crank (3.75" Stroker) picked out. I'm thinking about getting the vortec heads package from RPM, and the intake will be honed and ported to match. I have to have everything figured out before I order anything and the one major thing that I haven't figured out yet is the cam. Mike (HotRodV6) recommended Comp Cam 56-422-8. When I talked to a Comp Cam Rep today, he recommended 56-450-8 and a 2200 stall converter. I don't know enough about cams to choose. Does anybody have any advice or have the ability to make me more knowledgable about them? What would be the best cam for my application? (1/4 mile racing, street and strip) Thanks guys


~Chris~

 

[HotRodV6]

Re: Cam Choice

well the cam he recommended is smaller than the 422 cam. Are you keeping the engine NA or putting a turbo on it?? If you going to keep it NA then you need more cam and the 422 or even something slightly bigger top go with the stroker woudl work as well.

As far as the porting and what not of the CPI intake, i have an Extrude honed CPI upper and lower that has had the TB bore enlarged and would be the best choice for your setup and wil save you money in the long run, all that wouodl need to be done to it is have it welded up for use with the vortecs and its ready to go. I can also help if your wantring to convert to a true multi port injector setup over the stock CPI injector, which would be needed as the stock CPI injector runs on a 85-90% duty cycle with the stock CPI engine. Email me at HotRodV6@aol.com if you want to discuss this furthur.

 

[Drag SGT]

Re: Cam Choice

Thanks for your input Mike, yes I do want to put a turbocharger on it in the future, but for a couple more years it will just be N/A. What would be the best cam for an N/A engine and a Turbo'd engine? When you say the lower intake would just need to be welded up for use with the vortecs what do you mean? Like weld the lower intake to the heads? Would it be better to stay with my CPI or go MPFI, and don't complete (fuel rails, wiring harness, Regulators) injection systems run around 2K? I've figured out the inner parts of my engine, but I don't know a lot about fuel delivery systems. What about a TPI?