lets talk cams.

[copo69]

ok here,s the break down big block chevy 4.500 bore callies 4.250 stroke crank.carillo h beam rod,s. srp forged 10 cc dome pistons 6.385 rod. = 541 cubic inches.. heads dart pro 1 345 cc 119 cc chambers. 2.30 intake 1.88 exhaust. dart open plenium with holley 1,000 cfm full mallory ignition box and all goodies, t 400 auto 3,500 to 3,800 sthal 4.10 gears not all my choices but good parts none the less. looking to run a solid roller with a wicked idle. low 10,s what you think is best cam choice for this motor.. just want to see what you have done or seen done to help me decide.. looking at cranes grind r-254/420-2s1-12 ig 714 714 3800 to 7200 float at 7,800 254/262 at 50 thousands.. comments or suggestions .. thanks guys

[pushrod243]

Big motor moderate compression ratio from looking at you #'s posted. You left out the cars wieght. I ran an r268 which has similiar specs but more duration crane cam in a 71 nova in a 468cu in motor with open chamber raised runner bowtie heads and 11:1 compression. I used a turbo 350 tranny and a 3500 convertor. The car weighed 3250. It ran 11.40's on the footbrake and 10.20's with two nitrous sytems. I tried a r274 car ran the same et's. But for the best cam info pick up the phone and ask the experts. All cam manufacterers have people on staff to help you pick out the best cam for your ride.

[copo69]

car is a 69 camaro 2,910 lbs

[Lowend]

I am looking at something ~265@050 with a .640 lift and a 108 Lobe Seperation
I don't think you are going to make power much past 5500RPM in an engine with that much stroke, the piston speed just gets too high.

[copo69]

thats why most strokers have a 112 and up center lobe.