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DryLakesRacer
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Group: Forum Members
Last Active: Last Year
Posts: 1.7K,
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The gentleman who built my 56 used a 55 3.30 rear. Since I just went to a true 3 speed automatic my next project is to replace the entire rear end. From what I've read a 65-6 Mustang V8 is very close to a bolt in with the total width within 1/4-1/2" and what I've read and the spring perch being very close. Most I've found have 2.80 or 3.00 gears. I've found them complete with e-brake cables still on. Prices vary but after the new year it's my next purchase. Good luck.
56 Vic, B'Ville 200 MPH Club Member, So Cal.
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RB
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Group: Forum Members
Last Active: Last Month
Posts: 658,
Visits: 16.7K
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Eric I have a 56 rear I just pulled out 3.22 ,good drums, nice rust free one... Free for the taking.. Stevens point
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MoonShadow
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Group: Forum Members
Last Active: 23 minutes ago
Posts: 4.6K,
Visits: 38.2K
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They went to the 9" in 57 so they pumpkin will not bolt in. The entire 57 rear axle is a close fit though but driveshaft and U-Joint mods are required.
Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.
 
MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire
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Eric
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Hitting on all eight cylinders
Group: Forum Members
Last Active: 8 Years Ago
Posts: 7,
Visits: 261
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Thankyou for the response! Do you know what model 57/58 would bolt in?
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Eric
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Hitting on all eight cylinders
Group: Forum Members
Last Active: 8 Years Ago
Posts: 7,
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Lou
I am running a 351c with fmx 3 spd auto. Turning about 3700rpm at 60mph with 3.90 rear.
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Dave V
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Group: Forum Members
Last Active: 2 Months Ago
Posts: 234,
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Lou is correct. 56 automatics used a 3:22 gear
SE Wis
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Lou
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Group: Forum Members
Last Active: 2 Months Ago
Posts: 559,
Visits: 8.3K
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56 auto rear gear is 3.22, all others that bolt in (49\/55) are 3.30. If you use a 49/55 you have to use 49/55 axles.
What engine and trans are you running.?
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MoonShadow
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Group: Forum Members
Last Active: 23 minutes ago
Posts: 4.6K,
Visits: 38.2K
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They are take outs from a 56 probably 3:30's. I replaced mine with a 3:80 posi unit. Found the Detroit Gear original 56 Posi unit on EBAY several years ago. Will check tomorrow.
Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.
MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire
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paul2748
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Group: Forum Members
Last Active: Yesterday
Posts: 3.6K,
Visits: 497.6K
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. There is nothing that is a bolt in in the ratios you are looking for. The nearest would be an automatic rear which is around 3.30. Other than that, an early (57-58) rear would bolt in but you would have to find a set of gears in the ratios you are looking for. Usually, they are available. Eric (12/17/2017)
I have a 1956 ford fairlane differential with 3.90 ratio. Would like to go to 2.90 or 3.0 What would be the easiest option? Is there something else i can bolt right up to same housing? It has 17 spline axle shafts. Thanks
54 Victoria 312; 48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ
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Eric
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Hitting on all eight cylinders
Group: Forum Members
Last Active: 8 Years Ago
Posts: 7,
Visits: 261
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Moonshadow,
Thankyou for the response. I live in Fond Du Lac WI. I would be interested in what you have if it is in the 2.90 to 3.00 or so ratio. Photos would be great also to confirm it is correct. I would really only need the ring and pinion I believe. Let me know . Thankyou,
Eric
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