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Old 03-13-2003, 06:30 PM
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Post T-56 and slicks?

I am looking for some people that run t-56's. I
am planning on putting a t-56 in a 65 mustang
fastback. I am going to be running 500-600 hp at the crank and want to know the durability of the t-56. I was talking to the guy that sells the conversion and he says it will be a perfect match except with slicks. He claims at the drag strip with slicks these things blow up when you look at them funny. It mosty going to go one the street, but when I go to the strip I want to be able to run 26" slicks. They seem to live just fine behind vipers, I think this guy is smoking crack, but I would like to find out for sure before I end up with a 3000 dollar hand gernade.

any info would be great.

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Old 03-13-2003, 06:40 PM
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their suppost to be pretty strong but I don't now if they are 500-600hp strong then slicks, you could probably do it but you might have to be cinda gental.
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Old 03-14-2003, 02:23 AM
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There are a few t-56 tranny's made for the application. The ford t-56 is rated for 450 ft lbs, and has a gear ratio's of
the new 03 cobra trans has the ratios of
and it has a 450 ft lbs rating.

D&D modifys a Viper spec t-56 to fit SB ford and mod motors that has the same gear ratios as the 03 cobra but with the improved internals it is rated at 550 ft lbs.

They sell the non viper t56's for 2500 and the viper ones for 3000. I have the viper one and love it. It really shifts smoother than the tremec and t-5 options out there.

I don't run slicks but I do run nitto drag radials and run 1.8 and 1.7 60 foot times and havent had a problem. I have a friend with a 03 cobra that makes 563 foot lbs to the wheels and hasnt had a problem with it either. And like you said vipers don't seem to have a problem.

Good luck with your decision.

[ March 14, 2003: Message edited by: juxtoposed ]</p>
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Old 08-10-2003, 01:03 PM
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The 03 SVT Cobra T-56

5th gear and 6th gear ratio's are .08 & .63

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