SM420 to Dana 20 adapter? - Off-Road Forums & Discussion Groups
Ford Early Bronco, 66-77 All discussion of Early Ford Bronco's to 1977

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post #1 of (permalink) Old 12-12-1999, 05:19 PM Thread Starter
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SM420 to Dana 20 adapter?

I just got a SM420, 7.05:1 first[img]/wwwthreads_images/icons/smile.gif[/img] and am thinking about different transfercases with the front driveshaft on the drivers side. anyone know if there is an adapter to mate a "Chevy SM420 to and Ford Dana 20"?

Don't the ford 20 have a 2.4:1[img]/wwwthreads_images/icons/smile.gif[/img] low range also?

any other ideas would be appreciated?

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post #2 of (permalink) Old 12-25-1999, 12:21 AM
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Re: SM420 to Dana 20 adapter?

The bolt patterns are the same for all Dana 20's but the spline count on the input shaft is what varies from Bronc's to Scout to Jeeps. I think Advanced adapters can put almost anyD20 to your tranny And yes Bronco 20's have 2.46:1 low ratios same as a Dana 18.

Scott C

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