Sorry about not having a subject line in my original post. It was getting a
bit late.
More info for speedo gear reducer. . .
Truck is stock (GMC 100). It's not nearby, so this info comes from the shop
manual.
Optional transmission (4 speed) is mod. 177CA
Rear end is Spicer SP45 (3.07)
Wheels/tires are stock size (16s?)
I realize tire size affects the speedo calculation, so if anybody has a
chart for this please include info for a size up and down from stock.
I'm just beginning the resto and want to stay pretty much stock. The truck
has a flat bed built by my grandad in the early 60's. Other than that, it's
stock.
Thanks again
GOP
'59 GMC 100
'60 Caddy Conv.
'66 T-Bird TL-Q
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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