T5 vs 4G63T

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Ravewolf
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T5 vs 4G63T

Post by Ravewolf »

Ok, I know these trans can be bolted up with a hincher kit. But what I want to know is how much they'll take behind one of our engines before it goes pop.
Can they take high boost launches on sticky tires? The car I have weighs about 2200 lbs (before I gut it.) and I want overdrive, and manual. If not, I'll stick 200r4 behind it. Building this car for street/drag.
Car in question is a 68 toyota corona two door Coupe.
Thanks for the info?
Ravewolf
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Post by Ravewolf »

Anyone? Please?
RWD4G63
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Post by RWD4G63 »

I depends on the T5. Different T5's were built to handle different torque ratings. Look at the serial number on your T5 and then refer to this chart:

http://www.allfordmustangs.com/Detailed/349.shtml

I can definitely say these amounts are underrated. I have seen stock T5's with a torque rating under 200 ft lbs handle over 300 ft lbs for quite a while before needing a rebuild. I have a "246" T5 in my RWD Colt with a 300 ft lb torque Max and I am probably making closer to 450 ft lbs.
The only issue you might run into is very high rev shifting. I haven't really pushed it yet, but I heard the stock synchros in the transmission don't love shifting at 7000+ RPMs.
Plus, T5's are relatively inexpensive to build anyway, as compared to the T56..
1975 Dodge Colt (4G63)
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