The Ford Barn - Transmission Gear ratios

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Phred

08-08-2016 10:29 AM

Transmission Gear ratios

Les Andrews book shows 2nd gear as: 6.9:1

Is that the effective final drive ratio when run through the standard 3.78 differential?

What is actual tooth count of the second gear set?

Thanks in advance.

1930artdeco

08-08-2016 10:47 AM

Re: Transmission Gear ratios

I think there is a typo somewhere. 6.9 is so high you would be going about 2mph.
Mike

Jim Brierley

08-08-2016 10:47 AM

Re: Transmission Gear ratios

1st gear - 3.12:1; 2nd gear - 1.85:1; high gear 1:1. Multiply that times the rear end ratio to find the final-drive ratio.

Jim/GA

08-08-2016 12:16 PM

Re: Transmission Gear ratios

Quote:

Originally Posted by Phred (Post 1335795)

Les Andrews book shows 2nd gear as: 6.9:1

Is that the effective final drive ratio when run through the standard 3.78 differential?

Yes.

1.85 * 3.78 = 6.99

So closer to 7.0, actually.

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