I'm considering a CC503 cam to compliment the Trickflow Genx185 heads that I'm putting on my LT1.

Link here > http://www.summitracing.com/int/part...make/chevrolet

I haven't decided if I'm going to stay 350/355 or step it up and go 383. I've heard that some 383 combos will hit some cams and that I should be considering a small base circle cam. I'm pretty green with the internals and am relying on advice and friends for help.

Anyone with some advice?

Thanks.

 

He is only asking about the 503 cam. Since he doesn't know if he will eventually go for a 383, rather than a 355, would the cam be compatible with the 383, with respect to interference with a standard base circle dimension? I don't think he was suggesting that he will build and balance a 383 at home in his spare time. He just wants to know - will the 503 present a problem if he opts for a 383 (now or in the future), with respect the cam base circle and interference. I don't think it will be a problem, but in all honesty, I don't know.

Personally, I think he needs to reflect not only on the dimensional issues, but also on the suitability of the 503 to a 383. It will produce a more tractable result in a 383, more docile and milder street manners. Is that what he wants? What might be borderline aggressive in a 355 will not feel the same with the larger displacement.

The next question I would raise would be the selection of the Trick Flow GenX 185cc heads. These will cost about $1,600 for the pair assembled, and should be compared to for example, the LE1 ported stock LT1 heads ($900 heads alone, $1,200 with a matched cam) or the higher flowing AI CNC 190cc LT1's ($1,400 heads alone, $1,795 heads and matched cam). There's a lot to be said for porting the stockers.

 

sorry about the vague details. I was just wanting to know if I ordered a cam and changed my mind on what I was doing if I had to get another cam. I thought if I was smart I'd order a cam that was compatible with both scenarios.

As for what I have.. currently it's a stock LT1 with crane 1.6:1 roller rockers and headers. Al heads.. nothing special. It's a higher milege about 110,000mi but works great no issues.

I've already bought the Trickflow 185 heads, unused. had them for a couple years now.
Also picked up a LE ported stock intake
58mm (BBK I think) TB (used)

As for the building of the engine, I want to learn. You don't learn without making mistakes. I have friends that can help but it's something I want to do so I can say that I did it. If I blow it up then I blow it up. I'll figure out why and do it again. Will I do it in a weekend? Not a chance but I won't learn if I don't try. Where's the fun in working on your car if you just hire someone to do it all?

As for the effect of the 503 cam in a 350/5 vs 383, yes I did know it would tame it down a bit and honestly I'd rather that. It's a street car, it doesn't need to sound like it's going to stall idling at every set of lights. I was listening to youtube audio clips and the 503 in a 350LT1 still sounded acceptable for me.

 

There's a very good book on rebuilding the LT1.

 

already have it, thanks though