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Old 12-24-2020, 12:33 AM
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eschaider eschaider is offline
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Join Date: Feb 2006
Location: Gilroy, CA
Cobra Make, Engine: SPF 2291, Whipple Blown & Injected 4V ModMotor
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For those inquiring minds interested in bore / stroke dimensions this might help a bit. I don't recall the actual displacement so I built a quick and dirty table in XL to calculate strokes for various displacements using a standard 4" 289 cylinder bore.

This is what it looks like;

..Bore......Disp.....Stroke.....Incr Over Stock

4.000"......323.....3.213".........0.338"
4.000"......325.....3.233".........0.358"
4.000"......327.....3.253".........0.378"
4.000"......329.....3.273".........0.398"

Approximately every 0.020" increase in stroke adds 2 cubic inches of displacement.


Ed
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