3.73 or 3.42 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chris mc bride · 05-09-2017, 08:14 PM

Well Panel needs rear end rebuilt.Trying to decide between 3.73 and 3.42 gear. While it does have original 3 spd on the tree,it will be getting 4L80E in near future. Truck is mainly driver,cruiser and will see some lite towing.Tow wise my FED on open trailer for close races (100 miles and under) will be majority.Weight maybe 4000 if 4 wheelers loaded also.

Will I be giving up much pull power by going with 3.42. I know I loose little on fun meter. MPG wise is there really much difference once I get auto with OD installed?

05-09-2017, 08:14 PM	#1
chris mc bride Registered User Join Date: Aug 2008 Location: greensboro nc Posts: 673	3.73 or 3.42 Well Panel needs rear end rebuilt.Trying to decide between 3.73 and 3.42 gear. While it does have original 3 spd on the tree,it will be getting 4L80E in near future. Truck is mainly driver,cruiser and will see some lite towing.Tow wise my FED on open trailer for close races (100 miles and under) will be majority.Weight maybe 4000 if 4 wheelers loaded also. Will I be giving up much pull power by going with 3.42. I know I loose little on fun meter. MPG wise is there really much difference once I get auto with OD installed? __________________ Only the stupid know too much to learn something new.



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