E type ( XK-E ) 1961 - 1975

1972 4-speed power/torque rating?

Old Sep 14, 2019 | 01:48 PM
  #1  
jww427's Avatar
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Default 1972 4-speed power/torque rating?

Hello all!

My 72 XKE is running a 7-liter V12 that is dynoed at 460 bhp and 510 ft lbs of torque.
Will the 4-speed hold up or should I go with a 5-speed modern transmission?
Thanks much.
JWW

3:07 rear end ratio
 
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Old Sep 17, 2019 | 06:40 AM
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Daytona's Avatar
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I have no idea if the standard 4 will take that much power, but I should would like to see some photos of the car and engine.I like Hot Rod jags.
Bill.
 
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Old Sep 17, 2019 | 07:58 PM
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jww427,
If I was you I would call Paul at
MEDATRONICS 5SPEEDS
208 N. US HWY 1 - Unit 1
Tequesta, FL 33469
561-743-5600

Until part shortage prevented him from building 5 spd trans for E-type, he built the best 5 speed in the business, IMHO. He knows transmission like known else I know of.

Good Luck,
Bob
 
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Old Sep 23, 2019 | 04:19 PM
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Agree with Bob_S.

In my 72 roadster I ended up putting a Supra turbo 5 speed in (good up to about 600 bhp). Company out of Sidney casts an aluminum bellhousing that mates this xmission with the Jag v12. Add in a Fidanza flywheel and you are good to go.

Let me know if you want any names
 
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