Anyone Tko swap?

[70c10stepside]

Thanks everyone for the info. I was wanting the .82 given my 4.11. Be more useable. And t56 first gear is to short for me. I like the 2.7? These have. I'm going to call around more this week I guess and find what I'm going to settle with. I'm wanting to buy everything that I can new so I don't won't to to deal with used crap. Unless it's a bell housing, that's diffirent.

[Lattimer]

Originally Posted by 70c10stepside

Thanks everyone for the info. I was wanting the .82 given my 4.11. Be more useable. And t56 first gear is to short for me. I like the 2.7? These have. I'm going to call around more this week I guess and find what I'm going to settle with. I'm wanting to buy everything that I can new so I don't won't to to deal with used crap. Unless it's a bell housing, that's diffirent.

.82 OD with a 4.10:1 rear is going to turn a lot of RPM's at highway speeds.

The 2.87 low gear in my trans has me shifting out of first halfway through intersection with a 3.73 rear if I'm driving normal. Its about perfect for being able to drive normal and launch hard when I'm playing.

With my truck, and based on my speedo (which may be off a bit)----65 mph in OD is 2000 rpm with the .64 OD. With the .82 I'd be turning 2560 RPM. With a 4.10 rear that becomes about 2800 RPM, which really is too high for cruising on the highway. The .64 with a 4.10 rear will yield about 2200 RPM at 65----which is pretty much the sweet spot in my opinion for a carb'd engine. Too much higher you drink fuel, too much lower and you are starting to lug.


As I mentioned before---I may go to a 4.10 at some point in the future if I rebuild my rear. It will make my 1st gear a little lower and I'll have to shift way early, but my cruise rpm will be a better match to my engine.