I have a powertrax unit in my 12 bolt chevy rear end and I do not like it at all. I do not think it will stand up to much horsepower. I guess my motor was making about 430 hp and I was constantly breaking the ears off the couplers. I am going to go to a spool and upgrade my rearend. I do not drive this car much on the street so I will be ok with the spool.
Robert
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4.
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