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Winters Performance SR2525 SR2980 56 Inch Quickchange Rear End, Plain

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Notes
Rear-end is capable of handling 1000 Horse power & 1000 ft.lbs. of torque and has a 10" ring gear.
Winters Performance SR2525 SR2980 56 Inch Quickchange Rear End, PlainWinters Performance SR2525 SR2980 56 Inch Quickchange Rear End, Plain
Winters Performance SR2525 SR2980 56 Inch Quickchange Rear End, Plain

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Winters Performance SR2525 SR2980 56 Inch Quickchange Rear End, Plain

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What's in the Box

Winter's Championship rear end is available with either plain or fully polished housing, six-rib side bells and standard rear cover. Features a standard driveshaft yoke, heat treated lower shaft, 31-spline Winters Track posi differential, and a 4.12:1 ring and pinion.

Housing ends are standard 3.15" big Ford and include 2.5" offset axles. Axles drilled for both 5 on 4-1/2" and 5 on 4-3/4" bolt patterns. Measures 56" from axle flange to axle flange and requires our part #91711 10-spline quick change gears.

THIS ITEM SHIPS TRUCK FREIGHT

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Winters Quick Change Gears, 10 Spline
                        
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Lubrication Engineers SAE 140 Weight Gear Oil, 1 Gallon
                        

Whether you're running a stock flattie and rearend or hopped-up overhead and quick change, you need to run a good gear lube. Remember that your rearend was designed fifty plus years ago and needs all the help it can get. The biggest improvement you can give it is a lubricant that will allow the gears to survive the highway speeds that cars see today. L.E. gear oil is what we use in our 350 mph streamliner, that uses a V-8 quick change, without failure. The "red stuff" provides superior lubrication for long gear life. You can't win if you don't finish. We suggest 90 weight for the street and 140 weight for extreme uses.

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LE Gear Oil Data Sheet (PDF)

Winters Performance SR2525 SR8207 SR2980 56 Inch Quickchange, Polished
                        

Winter's Championship rear end is available with either plain or fully polished housing, six-rib side bells and standard rear cover. Features a standard driveshaft yoke, heat treated lower shaft, 31-spline Winters Track posi differential, and a 4.12:1 ring and pinion.

Housing ends are standard 3.15" big Ford and include 2.5" offset axles. Axles drilled for both 5 on 4-1/2" and 5 on 4-3/4" bolt patterns. Measures 56" from axle flange to axle flange and requires our part #91711 10-spline quick change gears.

THIS ITEM SHIPS TRUCK FREIGHT

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Axle Flange Identification Chart

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Fits New style Big Ford housing with 2-1/2" axle offset and 3.15" axle bearing. Drums drilled for 5 on 4-1/2" bolt pattern.

Axle Flange Identification Chart (Link)

Lucas Oil 10122 SAE 75W-140 Synthetic Racing Gear Oil, 1 Gallon
                        

Lucas Oil SAE 75w-140 Synthetic Gear Oil is a non-foaming, super slick, long lasting lubricant designed especially for heavy duty or high performance applications where regular gear lubricants just aren't good enough.

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