The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 70 Shortbox Chevy 2wd considering a GM 3800?

bradh · 10-26-2010, 05:30 PM

My Dad's '64 C10 is getting 18-20mpg with a tko600 tranny and a 350 with vortec heads and a Performer RPM Airgap. Cam is 219 @.050 on the intake side. That would meet your milage goal and have MUCH more power. FWD engine layout does not make for an easy rwd swap. I'd just build a tame 350 or even a 305, toss an OD tranny behind and enjoy 20+ mpg, cheap parts and the easy swap. I'll bet you could score a good running 305 with roller cam and one piece rear main seal for practically free.

10-26-2010, 05:30 PM	#13
bradh Registered User Join Date: Jan 2007 Location: Nebraska Posts: 84	Re: 70 Shortbox Chevy 2wd considering a GM 3800? My Dad's '64 C10 is getting 18-20mpg with a tko600 tranny and a 350 with vortec heads and a Performer RPM Airgap. Cam is 219 @.050 on the intake side. That would meet your milage goal and have MUCH more power. FWD engine layout does not make for an easy rwd swap. I'd just build a tame 350 or even a 305, toss an OD tranny behind and enjoy 20+ mpg, cheap parts and the easy swap. I'll bet you could score a good running 305 with roller cam and one piece rear main seal for practically free.