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Old 09-03-2024, 03:37 PM   #11
Mike Pearson
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Default Re: Cast crank for Super Stock?

I ran cast cranks in a couple of my super stock small block chevy engines. Never had a problem with them. I have broke 2 aftermarket steel cranks. Both of those broke because other parts broke first.
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Old 09-03-2024, 03:48 PM   #12
Jim Cimarolli
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Default Re: Cast crank for Super Stock?

I have seen them both break, mostly due to detonation.
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Old 09-03-2024, 09:17 PM   #13
Stephen & Horace Johnson
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Default Re: Cast crank for Super Stock?

i ran a 390 cast crank for years .. quickest we ever ran with it was 9.70s?
definetly not using cast cranks these days? it was a ticking time bomb waiting to happen ?
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Old 09-04-2024, 06:31 AM   #14
Bob F
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Default Re: Cast crank for Super Stock?

A 50oz external cast crank or something that?s been converted to internal balance?
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Old 09-04-2024, 10:53 AM   #15
Stan Weiss
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Default Re: Cast crank for Super Stock?

Quote:
Originally Posted by Stephen & Horace Johnson View Post
i ran a 390 cast crank for years .. quickest we ever ran with it was 9.70s?
definetly not using cast cranks these days? it was a ticking time bomb waiting to happen ?

How many runs could you get before the crank no longer maged good?


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Old 09-04-2024, 01:44 PM   #16
GTX JOHN
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Default Re: Cast crank for Super Stock?

I know several people who have used cast cranks in their 318/340
Superstock engines that run 8000+
I gave them quite a few for free as I do not run them in ours cars.
Most of them have got away from using them anymore.
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Old 09-04-2024, 01:45 PM   #17
Ken Parkman
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Default Re: Cast crank for Super Stock?

It's a 290 AMC, so no aftermarket parts, and pretty much nothing to directly compare. But with a light piston and fairly short stroke I've decided not to worry about it, and mag the crank after a number of passes. These are easy to internally balance.

I think the effectiveness of the damper is one of the biggest factors in crank life, but that's another thing where there is no comparable data.
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Old 09-04-2024, 09:44 PM   #18
Stephen & Horace Johnson
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Default Re: Cast crank for Super Stock?

the last one i used had 75 runs on it? it was maged good at that time , decided to go 427 shafts ?
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