JPhil
Huh?
I think I have no choice now but to swap out my TH400 auto for a TKO 5 speed manual. I'm concerned about the overdrive ratios so I'd like to ask you guys your opinions.
With my 3.36 rear end ratio, at 75 MPH I'm turning 3100 RPM now.
With .82 OD, I'll be turning 2540 RPM, a difference of 558 RPM.
With .64 OD, I'll be turning 1984 RPM, a difference of 1116.
The 36% difference of the .64 OD seems pretty steep and I wonder how often I would be able to use it, yet the 18% percent difference of the .82 OD isn't a whole lot, especially running higher speeds.
Which do you prefer for highway driving?
My new 383 is built for low & midrange torque rather than high RPM but I'd still hate to lug it. Yeah, the T56 6 speed would be nice but damn it's pricey. And no, I'm not going to go to junkyards and piece it all together. I will buy a kit.
With my 3.36 rear end ratio, at 75 MPH I'm turning 3100 RPM now.
With .82 OD, I'll be turning 2540 RPM, a difference of 558 RPM.
With .64 OD, I'll be turning 1984 RPM, a difference of 1116.
The 36% difference of the .64 OD seems pretty steep and I wonder how often I would be able to use it, yet the 18% percent difference of the .82 OD isn't a whole lot, especially running higher speeds.
Which do you prefer for highway driving?
My new 383 is built for low & midrange torque rather than high RPM but I'd still hate to lug it. Yeah, the T56 6 speed would be nice but damn it's pricey. And no, I'm not going to go to junkyards and piece it all together. I will buy a kit.