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Original Message
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RE: piston weight/rebalancing/Silvolite problems |
By david - 10/29/2004 10:06:20 PM; IP 12.74.16.105 |
The 1131 pistons are flat top with four small valve reliefs. The compression height is the same as the factory pistons, so the compression ratio should be very close. Silvolite has other 390 pistons that sit lower in the block, tht must have been what you had. |
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