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Old 03-19-2002, 05:25 PM
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MPKind MPKind is offline
Chief Ponti-yacker
 
Join Date: Mar 2002
Location: Champlin, MN
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I just did a visual comparison of the stock 400 piston to the TRW piston. I will measure one, and verify the diameter. The reason I say they're Pontiac is because they were in the trunk of a 65 Ventura (parts car), and the previous owner was going to use them. Also, there was a complete set of stock Pontiac con rods #541000? So, what conclusion would you make? Maybe the 22XX numbers were designated for domed pistons only. If all else fails, I'll have to measure the dome and relief volume myself to figure the change in comp chamber volume. Then again someone out there may have info on them.

Matt

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