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Re: 57 GMC, frame swap, 4wd, 454 big block, 4 speed
Quote:
Originally Posted by Purcell69
Great work! That big block will love the overdrive and with the torque it makes, you really won't notice a reduction in power, just lower RPM at highway speed.
-Joe
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Thanks! Yes, it has plenty of torque and definitely has no problem at cruising at 70. I'm hoping to get the axle shims changed today to see if that fixes the driveline vibration on the highway.
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