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18* heads on a 23* block?

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Old Nov 10, 2007 | 09:11 PM
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Default 18* heads on a 23* block?

Does anyone make an 18 degree head that can be used on a 23 degree'd piston block?
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Old Nov 10, 2007 | 11:08 PM
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From: Mo
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Is it a dom top piston, otherwise a flat top shouldn't matter
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Old Nov 11, 2007 | 12:38 AM
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The 23 degree pistons have small valve reliefs for generally sub 2.10 valve clearance with standard valve placement. I bought wiseco pistons made for 12- 18 degree heads this last refresh just so i could use 2.200 valves in the future with altered valve placement.

You might get away with it if you use lower lift roller cams
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Old Nov 11, 2007 | 09:50 AM
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Originally Posted by Highhat
Does anyone make an 18 degree head that can be used on a 23 degree'd piston block?

I thought all blocks were the same, ie. 18 degree heads bolt on to standard blocks.
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Old Nov 11, 2007 | 11:19 AM
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Originally Posted by turtlevette
I thought all blocks were the same, ie. 18 degree heads bolt on to standard blocks.
He's referring to the angle of the valve reliefs in the pistons....
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Old Nov 12, 2007 | 04:24 PM
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