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87MCProstar
10-11-2007, 07:55 PM
does anyone know the specs for interanl motor parts, i.e. compression, rockers?

TRBenj
10-12-2007, 10:56 AM
CR on a stock 240hp 351w is ~8.5:1. Stock rocker arm ratio on the Ford Windsors is 1.6.

87MCProstar
10-12-2007, 07:30 PM
Tim, knew i could count on you. what does the gt40p heads do to compression?

TRBenj
10-12-2007, 08:12 PM
Tim, knew i could count on you. what does the gt40p heads do to compression?
On our 351w's, the P's boost compression by about a point, to 9.5:1.