Tremec T K O transmissions

[My427stang]

2VNTG68S

I think you'd be happy with a 3.89 or 3.91.

[Cyclone03]

I have a TKO 600,.62od.
When I first put it together I had 4.11's with a 27" tall rear tire. I loved 1st-4th but, and this will sound odd, the drop from 4-5 sucked. I seemed to find myself shifting from 4-5-4 too much rpm, not enough rpm.
I went to 3.25 useless 5th gear below 90 lol. I'm happy with 3.70 no problem in 1rst,good 4th from 40-60, 1/4mile . .62/5th good from 50-up.

If I where to do it over I would do a 600/.82 with  a 3.50 or (NASCAR) 3.60 gear.

I think Richmond gear has an online gear ratio calculator go over there and plug in different ratios for rear gear and OD.

[2VNTG68S]

Thanks for all the feedback guys. I went with the 3.80's. Will let you know how I fare.

[Ratbird]

10.9 SLR will be almost ideal Bud, I like that number. Make sure you let us know how it turns out for strip racing.

With a 27 inch tire you'll be at 2327rpm at 60mph.  65mph will be 2520rpm. At least according to this calculator.

http://www.csgnetwork.com/multirpmcalc.html


Dave

[bn69stang]

Thanks for that link Dave , the gear ratio chart is very helpful .. Bud