Switching to a TH350 ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

KSever · 01-09-2005, 02:50 AM

Planning on changing from a Manual 3 speed on the 63 C-10 to a TH-350 out of a 76 C-10. My question is are the rear splines on the trannys for the driveshaft the same on these two? Or am I going to have to have the driveshaft modified to fit the TH-350?

64fleetside · 01-09-2005, 10:45 AM

More than likely the TH350 is longer than the 3 speed, you may have to shorten the shaft. Get an auto trans crossmember from 63-87 truck. Brian

01-09-2005, 02:50 AM	#1
KSever Registered User Join Date: Apr 2004 Location: Dodgeville, Wisconsin Posts: 22	Switching to a TH350 ? Planning on changing from a Manual 3 speed on the 63 C-10 to a TH-350 out of a 76 C-10. My question is are the rear splines on the trannys for the driveshaft the same on these two? Or am I going to have to have the driveshaft modified to fit the TH-350?

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01-09-2005, 10:45 AM	#2
64fleetside Registered User Join Date: Apr 2004 Location: arkieland Posts: 1,070	More than likely the TH350 is longer than the 3 speed, you may have to shorten the shaft. Get an auto trans crossmember from 63-87 truck. Brian



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