02-24-2015, 08:04 PM | #1 |
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camshaft specs
I didn't want to hijack the ring/pinion thread.
Does anyone know the camshaft specs of the readily available regrinds ? And how do they compare with Bill Stipe's 'B' 330 camshaft in drivability ? Basically what I'm wondering is if the regrinds are Model B or how close they come to them. And, do the regrinds have any wear issues. If the regrinds are available in 'B', then is the cost of one of Bills worth it ? |
02-24-2015, 08:40 PM | #2 | |
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Re: camshaft specs
Quote:
The two most popular ones I do are the 77B and the 1007B. 77B In 20/60 Ex 60/20 .320 lift In .011 Ex .013 1007B In 20/55 Ex 60/18 Lift .360 255 dur Rate of lift .008 per degree sq. Lobe separation 112 In .011 Ex .013 Both of these are better than the "B" cam. The 1007B will idle slightly higher than stock. About 550-600. The 77B idles stock and smooth. Both of these will run on one inch diameter lifters. Regrinds have no more wear issues than stock. |
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02-24-2015, 10:12 PM | #3 | |
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Re: camshaft specs
Quote:
Pete definitely knows cams, and his Isky 1007B suggestion fits a different "driveability" definition than what was in 1929. That cam will really need a downdraft or twin ups to shine. The mid is great because the valves accelerate quick, but (my opinion only) it is definitely lopey on idle, especially in a long stroke I-4 like an A. My own idea of driveability is not like what any original A, B, or "IB" cam will give. My fav is Stipe's RR340 (not the IB340). |
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02-25-2015, 10:10 AM | #4 |
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Re: camshaft specs
MikeK, could you tell us which one of Stipe's regrind cams are similar to the RR340?
thanks nick c |
02-25-2015, 10:35 AM | #5 |
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Re: camshaft specs
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02-25-2015, 10:54 AM | #6 | |
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Re: camshaft specs
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Quote:
Are any of these figures @ .050"?.....or, are the event times @ first movement of lifter rise? I've done 50 and 100 for so long, I've never checked them any way other....Thanks. |
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02-25-2015, 01:10 PM | #7 |
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Re: camshaft specs
These are checked at running clearance. It's the way most cams were checked in the late 40's when these were designed.
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02-25-2015, 07:10 PM | #8 |
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Re: camshaft specs
Thanks
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