Transmission upgrade

[Doch01]

Did u guys here about the upgrade for the t56 transmission u jst add 2 washers and it improve your shifting?

 

[Doch01]

This is the post

(Also Posted in Driveline)

I had done some research in the past about a mod that can be done to the T56 to make shifts much easier and smoother. The Z06 guys swear by it (They call it the Anti Venom mod...hehe). The mod is easier to do on a 'Vette than on a Cobra due to clearance issues between the trans and the tunnel on our Cobras. Maybe one of you guys can figure out a way to do the mod with the tranny in but I couldn't. Anyway, I just had the trans out of my car to replace the clutch so I decided to give it a try...and I'll be damned...IT WORKS! I HIGHLY RECOMMEND THIS MOD! By all means, if you're doing a clutch and you've got the trans out, try it.

Here's the trick:

Remove the big bolt that is high up on the passenger side of the T56. The bolt will take a 15/16" or 24mm socket to get it off. No fluid will come out. No springs will fly out. Nothing catastrophic will happen. This bolt has a ball and spring setup behind it that applies pressure to a detent in the trans.

What you want to do is to shim out this big ol' bolt with a washer (or washers) by about 1/16" to alleviate some of the pressure on the spring. Go either to NAPA and get part #704-1357 or Pep Boys or Autozone will have the same washers as a Dorman Oiltite part #65277. These are 13/16" or M20 copper oil drain plug washers and the pack of two costs $1.79. Yup. That's all! Put two of these washers under the bolt I described and tighten it back up. YOU WON"T BELIEVE THE DIFFERENCE IN YOUR SHIFTS!!! IT'S AMAZING!!!


My car has always been hard to shift...really notchy going in and out of gears. It always felt to me like hitting a wall in between shifts. I got the MGW and it helped a little. I've done the RP tranny fluid and I even did the friction modifier fix but neither one did much to help mine. THIS DID THE TRICK!!! Now it shifts smooth as silk. Try it. Bet you'll love it! :rockon:

 

[Doch01]

I wonder if it would work on the t45

 

[DuffManRHA]

I've never heard of this before at all, for a T56 or a T45, but I'd love to find out!

 

[01yellercobra]

I did it when I switched to the T-56. I didn't shift the tranny before the mod, but I noticed just sitting on the floor it was easier to shift. A couple buddies have shifted it and said it was nice. I also have the MGW shifter.

 

[snakeraper11b]

Did u guys here about the upgrade for the t56 transmission u jst add 2 washers and it improve your shifting?

Search Anti venom mod. People have been doing it for a long time, including myself. It relieves pressure off the shifter detent bolt, creating easier shifts. I wouldnt say its an upgrade though, just a clever modification.

 

[Doch01]

Search Anti venom mod. People have been doing it for a long time, including myself. It relieves pressure off the shifter detent bolt, creating easier shifts. I wouldnt say its an upgrade though, just a clever modification.

Is der anybody who did it and posted up pics of it

And dis will work on the t45 also

 

[snakeraper11b]

 

[zPipes]

der? dis?

 

[DuffManRHA]

I'm confused on the T45 part - can the mod be done on these transmissions in addition to the T56? Is it something that can be removed with the trans in the car?

 

[Doch01]

From what I've heard u most likely need to take out the transmission on less u have am special tools

 

[snakeraper11b]

I'm confused on the T45 part - can the mod be done on these transmissions in addition to the T56? Is it something that can be removed with the trans in the car?

This is for a T56, and thats the only thing I've ever done it on.

From what I've heard u most likely need to take out the transmission on less u have am special tools

Wrong, It can be done while the trans is in the car. A few swivels, extensions, and a little patience is all that's required.

 

[Doch01]

Snakeraper11b how many whashers did u use ima try it on my t45

 

[99COBRA2881]

Wont work on a t45, Ive got the T45 out of my AI race car and theres no bolt on the side of the trans like there is on the T56