Gas mileage

[wkooiman]

Here are some numbers.

My 2001 Viper GTS ACR with a 488" V-10 gets 20mpg on the highway.

My 1972 Pantera got 20mpg with a stock 351C + a Torker and Holley.

The Pantera dropped to 19mpg with a small solid cam and aluminum heads.

It dropped to 12mpg with Webers.

The Holley is going back on, and I hope to be in the 18-20mpg range again. I'm not doing the swap for MPG, but rather to make it look more like a Pantera and less like a race car.

My 428 Contemporary gets maybe 13-15mpg. I'm not really sure. I drive it. I gas it. I drive it again. Engine seems to be stock, with a top loader and 3.54 gears.

The engine size doesn't matter as much getting the rpms down (5-speed), and having the carb and timing adjusted properly. That's how the V-10 Viper does 20mpg. 6th gear is a 0.50 overdrive, and the rear end is 3.08:1. 70mph is something like 2500 rpm.

But like everyone said, once you get the car, you won't worry about gas mileage. It's not like you're going to drive it every day to work.

[Dwight]

Mike Hodge 408W 530 hp 3:55 gear 26" tires 5 speed, drives easy,13 mpg

I have a fuel injected 302 / 354 ci 500 hp 3:55 gears 26" tires 5 speed, leave the red light fast most of the time. Not smoking the tire but quick, I like the feel of acceleration. I get 20-22 mpg

But like it has been stated, a ton of fun per mile per gallon

gas mileage is the way you drive plus the gearing (tires size and air pressure plays into the equation)
Motor tune, we changed the jets in Hodges carb and he went from 6.7 to over 13 mpg.
air cleaner
exhaust system
type of gas your burn, ethanol or non ethanol gas
do you drive a couple of blocks and stop or is all your driving on the hiway?

Jeff has a 302 carb'ed stockist motor with 3;54 gears, get 25 to 29 miles per gallon on the hiway. Very easy driving.

It's more than the motor


Dwight

[1795]

To get the best gas mileage and performance you want to make sure that you match the power curve of your cam to the transmission and rear end gearing. If you go for an overdrive transmission and then match it to a a high speed reared (say, 3.31 for example), you may spend all of your time in lower gears if the power band of the engine is in the 3,000-5,000 range. Take your time and think things through. Use the search engine as others have suggested and wear tall rubber boots as you sift your way through the BS to find the kernels of knowledge (corn) floating with the turds