Measuring piston to deck

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Dec 3, 2015 | 11:36 AM

79T/A

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Joined: Oct 2015

Posts: 49

Measuring piston to deck

I have a 403 I'm putting 350 heads on, and it has 30 over stock style dish pistons. Where do I measure these for piston to deck height in the dish or around the side?

Dec 3, 2015 | 12:46 PM

captjim

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Joined: Aug 2007

Posts: 2,250

Quote:

Originally Posted by 79T/A

I have a 403 I'm putting 350 heads on, and it has 30 over stock style dish pistons. Where do I measure these for piston to deck height in the dish or around the side?

On the edges, which are the tallest parts of the pistons. Find TDC, then use a dial indicator or put a straight edge across the bore and use a feeler gauge to determine the clearance. Do all 4 corners