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Bigdav160 · 10-23-2018, 12:28 PM

The Dana 60 is a excellent bullet proof axle. I would keep it.

The benefit of a 200-4R conversion is that it is the same length as your TH350. Other than rigging throttle valve cable/linkage and wiring up the lockup clutch it's a bolt in.

The 700R4 is based off your current TH350 but is longer. It will require the mount to be pushed back and the driveshaft shortened. It has the same TV cable/lockup requirements as the 200-4R

10-23-2018, 12:28 PM	#16
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: 1971 GMC C2500 rear end questions The Dana 60 is a excellent bullet proof axle. I would keep it. The benefit of a 200-4R conversion is that it is the same length as your TH350. Other than rigging throttle valve cable/linkage and wiring up the lockup clutch it's a bolt in. The 700R4 is based off your current TH350 but is longer. It will require the mount to be pushed back and the driveshaft shortened. It has the same TV cable/lockup requirements as the 200-4R __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe