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Discussion Starter #1
Hi

I am building a 302 for a street toy of mine. The engine specs is as follows:

9 to 1 compression
Performer RPM Intake
600 CFM Carb
1969 351W Heads

Thanks

Isky Spec is 221 at 0.050 I/E
Lift .496
L/C 108 Degrees
 

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Unless the exhaust side of your Windsor heads are ported you should run a dual pattern cam with at least 10 degree more timing on the exhaust side. Also, to reccomend a cam we need more info. What stall speed are you going to use? I need header size and approx lenght of tubes, plus I need a complete lay out of the exhaust system. Car tire diameter and rear end gear ratio information will help too.
 

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Discussion Starter #4
Oops!

The car weights about 2800 lbs

Stall is approx 3100 rpm

Headers 1" 5/8 with a 3" collector

Rear gears 3:70 to 1

Thanks for your input!

Terry
 

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I ran a number of similiar style cams through your combo on my Performance Trends Engine Analyzer. The one that seemed to work best was a Crane Powermax H-278-2 (222-234 .498-.527 114L/S +5) It made over 300 ft/lbs from 3000 to 5700 with a peak torque of 341 at 4400 RPM. The HP peak was 325 HP at 5700 RPM. It made more torque and HP than the ISKY cam did everywhere above 2700 RPM. With your 3100 stall the Crane would be quicker. It even has 5 degrees less overlap and will pull slightly more vacuum than the ISKY. I hope that helps.
 

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Discussion Starter #6
Thanks for the info!

So...in other words, get rid of the Isky and go Comp cams?

I would like to purchase the crane cam you have recommended, but I have both of thoses cams in my possession already


Terry
 

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Yup. The Comp made a little bit more HP than the Crane but it was at the expense of low and midrange torque and it had a couple of inches less idle vacuum too. It was better than the ISKY though and would be my choice out of the two, especially since you have a 3100 stall converter.
 
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