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Old 07-15-2008, 05:10 PM
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steel shim gaskets / piston to deck clearance 396

I currently have a new set of closed chamber 702 heads that I rebuilt that I will be putting on my 396 BBC. Going to use a .022 steel shim LS6 gasket. Compression will be about 10.3:1...have a few questions as I am new to this:

1. will the L2240NF pistons be OK on these heads?
2. the piston to deck clearance is about .024 - .026 for all cylinders except for one, which is about .037. What would this indicate? Problem? seemed to run fine before.
3. Heads have been shaved. Block will not be decked as I am not in a position to do this, although I know it is preferred. Do you think I'll be OK ? Have cleaned the old gaskets off of the deck pretty good.

Thanks!

Hawk

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Old 07-15-2008, 05:22 PM
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Thats a big difference. If its the block deck that is out that much end to end , you will have trouble with the (any) head gasket.
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Old 07-15-2008, 05:28 PM
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You would be more happier with a ROL head gasket then the steel shim gasket. The reason being is the steel gasket needs to sit on a known level surface and you can not guarantee the block surface is true. If the block was decked along with the heads and mated well, you would have no water or combustion leaks. You just can't trust it!

The .037 deck height, could be the piston, could be where you measured to on the deck, see above regarding leaks and levelness of deck. Time to break out the plastersene.
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