You probably have a 4:11 or 4:56 gear ratio. 50-60 mph is about tops. There are a lot of theories & opinions on break in. I just don,t torture it for the first 500-1000 miles. Avoid long hard pulls, backing out of the accelerator occasionly to suck oil into the upper rings & valve guides.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
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