#18

03-26-2007, 09:04 PM

Steve C.

Ultimate Warrior

Join Date: Dec 1999

Location: Liberty Hill, Tx. (Austin)

Posts: 10,929

http://www.wallaceracing.com/chokepoint-rpm.php
Calculator for cross section based on rpm

Fun to play with numbers...

A truck motor 4.180 bore 4.210 stroke at 5000 rpm = 2.33 sq inches.
Use a factory 2.05 x 1.30 intake gasket at 2.31 sq inches.
Same bore & stroke taken to 6000 rpm, needs 2.596 sq inches or a Felpro 1233 gasket at 1.180 x 2.200 or 2.596 sq inches.
A truck motor 505 at 6000 rpm needs a SCE #128103 gasket, 2.320" tall.

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