1956 Dodge V8 Powerflite
Gbreslin
Posted 2020-08-21 4:53 PM (#602370)
Subject: 1956 Dodge V8 Powerflite


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Posts: 13

My1956 Dodge has a (I think) 354 rear end---did any Mopars of that era offer a rear end (322?) that was easier for highway driving? Most of our trips involve open highways and expressways 70+/- mph.

Thank you.

George Breslin
breslingw@gmail.com
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56D500boy
Posted 2020-08-21 6:34 PM (#602373 - in reply to #602370)
Subject: RE: 1956 Dodge V8 Powerflite



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Gbreslin - 2020-08-21 1:53 PM
My1956 Dodge has a (I think) 354 rear end---did any Mopars of that era offer a rear end (322?) that was easier for highway driving? Most of our trips involve open highways and expressways 70+/- mph.
Thank you. George Breslin breslingw@gmail.com


George: Sorry to disappoint but your 3.54:1 rear diff is as good as it got for cruising in 1956 (when the roads were slower and 70 mph was insane).





(55-56RearAxleDiffRatios.jpg)



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Attachments 55-56RearAxleDiffRatios.jpg (179KB - 230 downloads)
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Powerflite
Posted 2020-08-21 7:20 PM (#602377 - in reply to #602370)
Subject: Re: 1956 Dodge V8 Powerflite



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Unfortunately, the best option to get a higher gear ratio is to replace the rear axle. A B-body rear is a good replacement, but will require moving the spring pads and replacing the driveshaft.
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57chizler
Posted 2020-08-22 2:41 PM (#602409 - in reply to #602370)
Subject: RE: 1956 Dodge V8 Powerflite



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The 8 1/4" gear set in most '56's dates back to at least 1937. The lowest numeric ratio offered in these gears was 3.31.
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58coupe
Posted 2020-08-24 12:48 AM (#602451 - in reply to #602370)
Subject: Re: 1956 Dodge V8 Powerflite



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The 8 1/4 " rear was used up to at least 61 in the 6 cylinder dodges and plymouths. I have not tried but the newer ones may interchange with the 55-56 ones and more ratios may be available.
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57chizler
Posted 2020-08-24 1:18 PM (#602476 - in reply to #602451)
Subject: Re: 1956 Dodge V8 Powerflite



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The '62-'65 6-cylinder 8 1/4" had 3.31 and 2.93 ratios but the interchange book doesn't show them fitting '61 and earlier. Don't know why.
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