Yes. That truck of yours needs a OD. My 66 with the 383 and 5 speed is decent quiet at 70, but I got sound deadener everywhere in the cab too, so maybe that helps? I can run it down to 1200 to 1500 rpms and it has all the tq it needs to pull out of the hole.

Last edited by Ferris Bueller; 04/03/2025 8:55 PM.
1966 C-10 Step Side
"Augustus"
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