Quote:
Originally Posted by Zimtok
I remember working at a gas station (i actually pumped the gas) back in the late 70's. the price of gas (and cigarettes) were just over $0.50. My Sister and my Mom both had a Duster with the slant six and got great gas millage.
I have been thinking over the past few years to find a 67-72 Chevy/GM truck with a 6-cylinder engine and manual transmission.
Replace the transmission with a 6-speed and then I could get great fuel economy.
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Behind a 230 or 250 6 cyl, it can be done a TON cheaper & with factory parts. Performed the "factory" OD addition mod twice on '66 & '69 6 cyl/3 on the tree Chevy shortbeds in the late 80's.
Chevy, in the early to mid 60's, offered a 3 speed manual with an electric solenoid activated overdrive in its car lines. Have one such 3 speed, currently, that I removed from a '65 Biscayne. Ford & Rambler also had a similar deal, though their solenoid is different & input shaft, believe, is also different. Swapping out the original 3 speed trans to one with the electrically activated OD knocks the rpms with the 3.73's in the 12 bolt truck rear down to a very manageable amount. Am not sure the exact OD ratio, we did not have a tach on the '66, but I'm betting it was between .64 & .70.