Tremec TKO II w/ 0.82 OD and 3.73 rear end... Mistake?

Dark_5.0 · 11-13-2004, 04:26 PM

You should never hit 5th at the track unless you have a 6 speed.

What is your trap speed in the 1/4 and are you running 26 or 28 inch rear tires.

Treachery · 11-13-2004, 05:35 PM

Never made it to the track.. The track is a good 70 miles from where i live and "race night" is on a Wednesday.. A good 150 miles from work.

I never rode in a Mustang with 3.55 gears much less one with a 0.82 5th gear.. I figure the RPM's would drop when on 5th.. but how would acceleration be affected?

Thanks.

~The Jester~ · 11-13-2004, 07:35 PM

Keep in mind that on a 4 speed + overdrive (which is what you have) that 4th is direct. Going with your .82 OD ratio, 4th is 1.00!! So there really isn't alot of difference. I'm running a TKO with .65 OD and it's just awesome. Actually have 4.30's in the car as well, shimmy on down into overdrive for the freeway. NICE!

Possible solutions for you. Keep in mind that everything is a compromise. What you gain on top end (or Revs) you'll loose on the bottom. I sorta like the "ass dyno", which is why I have such a steep gear. You can't touch my dashboard in 3rd gear. hehehehehe

What size tire are you running? Taller tire will help you out a bit. Dropping down to 3.55 will help a bit. Installing the OD cluster from another tranny with the .65 will help, and not cost you on the bottom end. Of course, the win/win situation is the most expensive and the most difficult. Hope this helps!

Treachery · 11-15-2004, 08:23 PM

The tires i'm running are either P245/75R16 or P245/70R16.. don't know off-hand.

You mentioned installing the OD cluster from a tranny with .65.. This may be what i need. Please elaborate.

11-13-2004, 04:26 PM	#1
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	Re: Tremec TKO II w/ 0.82 OD and 3.73 rear end... Mistake? You should never hit 5th at the track unless you have a 6 speed. What is your trap speed in the 1/4 and are you running 26 or 28 inch rear tires. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

11-13-2004, 05:35 PM	#2
Treachery Registered Member Join Date: Jul 2002 Posts: 38	Re: Tremec TKO II w/ 0.82 OD and 3.73 rear end... Mistake? Never made it to the track.. The track is a good 70 miles from where i live and "race night" is on a Wednesday.. A good 150 miles from work. I never rode in a Mustang with 3.55 gears much less one with a 0.82 5th gear.. I figure the RPM's would drop when on 5th.. but how would acceleration be affected? Thanks.

11-13-2004, 07:35 PM	#3
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: Tremec TKO II w/ 0.82 OD and 3.73 rear end... Mistake? Keep in mind that on a 4 speed + overdrive (which is what you have) that 4th is direct. Going with your .82 OD ratio, 4th is 1.00!! So there really isn't alot of difference. I'm running a TKO with .65 OD and it's just awesome. Actually have 4.30's in the car as well, shimmy on down into overdrive for the freeway. NICE! Possible solutions for you. Keep in mind that everything is a compromise. What you gain on top end (or Revs) you'll loose on the bottom. I sorta like the "ass dyno", which is why I have such a steep gear. You can't touch my dashboard in 3rd gear. hehehehehe What size tire are you running? Taller tire will help you out a bit. Dropping down to 3.55 will help a bit. Installing the OD cluster from another tranny with the .65 will help, and not cost you on the bottom end. Of course, the win/win situation is the most expensive and the most difficult. Hope this helps! __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....

11-15-2004, 08:23 PM	#4
Treachery Registered Member Join Date: Jul 2002 Posts: 38	Re: Tremec TKO II w/ 0.82 OD and 3.73 rear end... Mistake? The tires i'm running are either P245/75R16 or P245/70R16.. don't know off-hand. You mentioned installing the OD cluster from a tranny with .65.. This may be what i need. Please elaborate.

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