Originally Posted by Bob B. (Post 9306550)

The Ford 240 and 300 heads have alternating valve positions with individual ports, compared with the Chevy 6's siamesed intake ports. The center exhaust ports of the Chevy are also paired. The Chevy straight 6's use a number of 'Small Block' V-8 parts including pistons, valves, and rocker arms. The Ford 240 and 300 borrow some parts from the Windsor and FE V-8's. Cylinder head notwithstanding, I always thought the 292 was a better engine than the 300 because of its tall deck block and much better connecting rod ratio. The oiling system is better as well (Ford feeds the cam bearings before the mains). The 300 is something of a mythical engine among Ford fans (it is one of the better Ford engines no question) but I think the 292 was tougher and pulled harder at low r.p.m.'s.

The GMC V-6 was something else entirely, a purpose built heavy duty commercial engine that compares to the International Harvester V-8's and Ford Super Duty V-8's.

Originally Posted by factorystock (Post 9306785)

GMC V6 1/2 tons came with a 3.07 rear standard, would think it would do ok in the gas mileage dept. '67 Chevy came with a 3.73 standard.

Originally Posted by Rods (Post 9306806)

You’re kind of correct but not completely. Gear ratio was determined by engine size transmission type and if it was a 10/20/30.

Also 7 miles to the gallon at $5.00 per gal. now days is not OK gas mileage to me but back in 67 I guess it would have been ok……..

Originally Posted by '68OrangeSunshine (Post 9306810)

In 1967 in LA, Regular Leaded was about 17 cents per gallon and Premium could get as high as 25 cents per gallon at a station just off the freeway.

Originally Posted by Rods (Post 9306813)

Man…….what a great time let’s bring those prices back

Originally Posted by Rods (Post 9306806)

Also 7 miles to the gallon at $5.00 per gal. now days is not OK gas mileage to me but back in 67 I guess it would have been ok……..