I JUST PURCHASED A 12 BOLT FOR MY 92 CAMARO Z28(305) AND NOW I NEED A CROSSOVER U-JOINT. I NEED SOME HELP ON CHOOSING WHICH ONE I NEED. I CALLED MOSER ENG. AND A TECH GUY SAID THAT HE NEEDED TO KNOW THE SIZE OF IT. HOW DO I MEASURE TO FIND OUT THE SIZE? DO ANY OF YOU GUYS KNOW THE PART # OR SIZE ALREADY? THANX, NATE

 

The u-joint to fit in the stock driveshaft is a Precision 534G. You'll need to take the yoke off the diff and take it down to your local parts store. They can match up the size the yoke needs. Then with those 2 sizes, they can give you the adaptor u-joint.

Will the driveshaft be the correct length with the new diff? If you need to lengthen or shorten it, have the end yoke on the shaft changed to the same size u-joint as the diff yoke.

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Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block

Best ET on a time slip: 11.242 altitude corrected to 10.69
Best MPH on a time slip: 121.52 altitude corrected to 127.76
Altitude corrected rear wheel HP based on power to weight ratio: 504.5
Best 60 foot: 1.546

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley