Quote:
Originally Posted by barry1982
Nice truck! Just my opinion, but are you sure you want to go with the O/D? Guess I'm a bit "old school", but your already setup with a TH400 (probably one of the strongest trans. GM ever made) and a 3:08 diff which is close to a perfect match <snip> on the highway the overdrive will shine....
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An O/D trans is certainly NOT a necessary change. But the truck didn't get its name for nothing: The BBDBH (Big Block Dirt Bike Hauler). 2 hours up, 2 hours back, as often as we can! The mechanical part of the swap and the functional tuning I'm fortunately very comfortable with. But, ya, it's tough to pull a working 400 out of an original build truck!