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Author Topic:   crank question
Dirt Maniac

Total posts: 149
posted March 09, 2005 12:24 AM  
probably a stupid question so i apologize in advance, but what stroke crank is stock for 350, and what stoke crank do the 360 sprints run?

Dirt Forum Champ
Total posts: 796
posted March 09, 2005 06:02 AM  
Stock stroke 350 crank is, 3.480"

360 Sprints i imagine run 3.5625" stroke (9/16th's motors, alot of old timers call em)
w/ a stock bore or .010 over it would make 360 cubes

They could run a .060 over bore, and a 3.50 stroke, but i think that makes 358 cubes. Not sure on the 360 sprints.

Dirt Forum Champ
Total posts: 755
posted March 09, 2005 07:31 AM  
360 rules vary. Our local rule says stock stroke/bore combo with a max of 3.50". ASCS rules just say 360 cu max. Some guys run a 3.330" stroke 4.125" bore motor.

Dirt Maniac

Total posts: 145
posted March 09, 2005 01:53 PM  
I think a .040 over bore makes a 358.

Dirt Maniac

Total posts: 149
posted March 09, 2005 06:33 PM  
thanx guys rules state no strokers, but with a 360 max ci,,,,

Dirt Freak

Total posts: 428
posted March 09, 2005 06:35 PM  
Well thats no fun, no strokers? Da*n the man, a guy cant have no fun.

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