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Author Topic:   Mismatched Heads?
DJR22
Dirt Maniac

Total posts: 111
posted August 14, 2005 06:10 PM  
Could there be any problem running 2 heads of differing casting numbers? Though valve and combustion chamber sizes remained equal, would the different flow of the runners really mess things up? Thanks.

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-stand on it-

sc1 racing
Dirt Freak

Total posts: 419
posted August 14, 2005 08:43 PM  
you will have to post casting numbers to see the diff..

Racer X
Dirt Freak

Total posts: 257
posted August 15, 2005 03:47 PM  
We ran a 461x and a 492.Both were the same valve size couldn't tell ya about the flow but ran it like that for over a season and it ran fine.

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