Rear end / mpgs - The 1947 - Present Chevrolet & GMC Truck Message Board Network

The Youngen · 04-02-2011, 10:58 PM

Im working on a 71

and it has a 350 with a turbo 350. Currently the rear end is a 3.73. What im concerned with is that when im on the highway, the engine will be sitting at at-least 3000 rpm. Any recommendations for ways to improve this? im not really concerned with towing or drag racing. Id much rather have my engine running low and efficient than screaming. Any suggestions? should i get like a 3.08 or 3.54 rear end? Would like some thoughts.

04-02-2011, 10:58 PM	#1
The Youngen Registered User Join Date: Oct 2010 Location: Westbrook CT Posts: 81	Rear end / mpgs Im working on a 71 and it has a 350 with a turbo 350. Currently the rear end is a 3.73. What im concerned with is that when im on the highway, the engine will be sitting at at-least 3000 rpm. Any recommendations for ways to improve this? im not really concerned with towing or drag racing. Id much rather have my engine running low and efficient than screaming. Any suggestions? should i get like a 3.08 or 3.54 rear end? Would like some thoughts.



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