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Old 02-10-2011, 02:25 PM
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sbc build.

can anyone tell me about what horse power my motor will have, i have a small block chevy 350 with flat top pistons .30 over bore, standard stroke, this C1M288U general kinetics cam, 58 cc combustion chamber heads, with 1.72 in valve, 1.60 ex valves port matched heads to a victor jr intake, and headers, holley carb electric water pump and fuel pump, hei distributor. anyone know about what kinda power this combination will run?

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Old 02-10-2011, 03:21 PM
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Your combo is way mismatched. 1.72 valve heads run out of breath at 3500 RPM. What are the head casting numbers? We don`t know the size of the cam so there`s no way to know if it`s for low end or high end.
Is this for street use? If so flat top pistons and 58cc heads will push the compression ratio over the 10:1 ratio and it`ll detonate on 93 octane pump gas. Lastly the Victor Jr is a open plane intake and it`s power band doesn`t start until 3000 RPM and that`s not very good for the street.
Any time your doing a build, all the pieces much match to work together as a team to make max power. When the combo is mismatched it turns the engine into a slug. You didn`t mention what tranny you`ll be using, if your running a automatic, the given cam may require a stall converter.
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Old 02-11-2011, 12:33 AM
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ok so the cam is a general kinetics, C1M288U dont know specs, i going to use some other heads instead got to sets 376450 head casting numbers. i am not really caring about a daily driver, got accel hei super coil as well. i am wanting a motor that will run out well and i am going to be running a manual transmission so i aint got to worry about a and got access to lots of race fuel.
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Old 02-11-2011, 07:26 PM
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Lose the heads and intake if you are going to want any kind of performance. Find a set with 1.94/1.50 valves. I wonder if it would be worth it to have 1.94/1.50 valves installed in your current heads? I don't know but that would be something somebody else on this forum could probably answer. I used a Victor Jr intake for a while, it worked but after I swapped to a Performer RPM (not the air-gap) I noticed a big improvement. Especially considering this was in a 4500lb K5 Blazer. If you keep your existing heads you'd probably be better off with a stock intake or a basic Performer.

I found this post that looks to clear things up a bit. General Kinetics Cams
My guess is the cam is a solid with 288 advertised duration.

Last edited by Blazin72; 02-11-2011 at 07:33 PM.
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