230CC iron Eagle heads,383

[badfast47]

So this cam being such a long duration would not be good for even a 1/2 mile track ? Want to keep the rpm's 7000 give or take. Assembly is internally balanced.

[Lizardracing]

I'd think a long sweeping momentum track where the rpm stays up it would be better.
Just judging on the specs given the cam seems like a generic off the shelf copy of an old school grind. It's kinda long for even 7k and less than ideal however if it's what ya got it'll work. Just know it's going to likely be a peaky power curve and narrow, coming on at maybe 5k to your 7k max.
If you haven't bought the cam yet then I'd pick something in the 240ish@.050. IF you have and have to run it, I'd adavnace it 4'. That'll lower the rpm peak and where the power comes on but the trade off is the max power will be down some vrs the ideal cam timing.
A custom grind even from a master list like Comp, (has a website that you can ask for recommendations and quotes) Howards, Bullet, is only a little more money but would net you a more enjoyable engine as they could get you closer to ideal. I'm not a cam expert, just been doing this a long time.
Whichever way you go, verify the cam degree's manually. I've seen dowels indexed wrong, timing sets machined wrong, lobes machined wrong, gear marks wrong....I have a set by SA Gear on the shelf now that has a badly machined key way and it's 8' off. No reason to beat your self right from the beginning.

[badfast47]

Yes lizard it is a off the shelf cam. Started to build this engine for a sport mod class and to change it all.Thought i knew what i was doing but i guess not. I'll either advance it 4 or just get another cam with the the 240ish @50. because i don't have to use this one i have now. Thanks for the help.

[badfast47]

A lot of time has passed and want to beef this motor up. Raced the current motor specs right at 7,200 rpm's. I want to bore it to a .60 over with dome pistons at approx 12:1 compression and Assault aluminum 205 runner heads, 2.02 1.60 valves. Roller lifters, Roller cam at 630 lift with a lower duration than before. Victor jr 2975 intake, A balanced 4340 lower end. Billet main caps with main and head studs. 750 Demon Carb.

[fastford]

what block are you using?

[badfast47]

It's the 350 010 block

[badfast47]

I also have a set of aluminum dart pro 1's 245 cc heads with 2.100 intake valves. Would like to put them to use.