Quote:
Originally Posted by NeighborsComplaint
With your highway gear, you're going to want a variable duration lifter. If you can't stand the clacking Rhodes lifters, try the Crane Hi-Intensity variable duration lifters. While they aren't quite as effective at shortening the lift and duration as the Rhodes they do tame the idle and low end quite a bit and are very quiet. Crane's QC is very good also, I've never had an issue with a Crane branded valve-train component. I have been running Crane cams, lifters, springs, retainers and locks for many years. without issues.
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All due respect, I certainly don't consider a 3:42 rear gear a 'highway gear'. To me, a highway gear is a 2-series gear, not a mid 3-series.
My '65 GTO has the same trans as the OP (2.56 low gear) and a 3.36 gear out back....with a 389. And it has a much wilder cam than the OP's. I have NO issue getting the car moving with roughly the same gears and same power to weight ratio.