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i run a shortbell 930 in my 71 conversion with an all aluminum dart 434 cuboc inch sbc roller motor. gearing is good and i dont worry about quick starts. i would never consider a 915 even if beefed up for serious horsepower. 70 mph in fourth gear is 2200 rpms with the 930 gearing.
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69 bronco..... 91 mustang ssp santa clara county sheriff's office ...2017 focus rs tuned on 93 400 chp
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