AMC 4-cylinder in a Spirit (Revisited)

[TABunsey@xxxxxxx]

Frank & Company:

Please pay attention to my entire post, AND to the original question concerning gearing.

(1) I don't argue that the 4-cylinder in a TRUCK would have 4.10 gearing.

(2) But he doesn't want to put the engine in a truck; he wants to put the engine in a CAR. FOR GAS MILEAGE!!!!

We aren't talking TRUCK gearing; he wants to know what PASSENGER CAR gearing to use. We're not talking about load hauling a ton of wood or whatever in a pickup TRUCK, we're talking about a passenger car rated at about max 700 pound payload (see owner's manual for details). 

What I am saying is that when AMC used a similar sized engine in a Spirit, these were the rear end ratios they used.

Historically, trucks use deeper rear end gearing than the same engine in a passenger car. You know this, I know this.

The guy raising the issue wants to put this engine in a passenger car. He isn't going to haul firewood, or plow his driveway, or go off road with it. He is going to drive the car on the highway!

As I recall, the 1982 Spirit with the IRON PUKE and the 5-speed was rated at 37 mpg, highway. With a 3.08 gear. And a .85 5th gear (overdrive).

THIS IS WHAT IS WANTED. Mileage!

NOT pulling Jeeps out of ditches!

Tom Bunsey

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