sb 360

dodgetkboy78 said

Damn, they had a 587 air pump head...... ain't that some ****? Glad I've never ran across one of them!

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All open chamber 340/360 heads with the exception of the late 80's 308 head are for all practical purposes the same and have the same potential. The 308 head has a better exhaust port design that is the same as the closed chamber magnum head.