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View Full Version : 454 in 18 Classic needs HELP



jyoung
05-26-2001, 06:56 PM
I have just this past winter installed a 454
Alum Hirise intake, 750 CFM Holly, 1" extra spacer, Silent Choice, 1.5 Gears
removed water pump and preheated water before it goes to motor, 4400 RPM Mirage PLUS 25 = 63.5 MPH. HOW DO I GET 70 PLUS WITH THIS SET UP. Will 1.33 gears help with a 23 Mirage Plus.

JIM