Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


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#38292 07/01/02 01:07 PM
Joined: Dec 2001
Posts: 12
Steveg4 Offline OP
Grease Monkey
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Grease Monkey
Joined: Dec 2001
Posts: 12
Please help:
Ron Wigg in Scotland has the following question:
"Would like to know info on 55-57 axle ....particularly the 17 spline halfshaft. Did the passenger cars have thinner forged halfshafts than the trucks? Would like to know if any of the 17 spline axles had different shaft diameters? Difficult to find information over here. thanks"
please post your answer here or contact Ron Wigg directly at wigg@ourweehouse.freeserve.co.UK

Wilwood Engineering1955-1957

Willwood Engineering

Wilwood Engineering designs and manufactures high-performance disc brake systems.
Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188


#38293 07/01/02 09:24 PM
Joined: Dec 2001
Posts: 865
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Joined: Dec 2001
Posts: 865
This information taken from the 1958 parts book: Group 5.420 Axle Shaft
55-56 Pass.--left (17splines-28 13/16 O.L.) pt# 3714781
55-56 Pass--right(17 spline- 30 5/16 O.L.) pt#3714782
57 Pass,corv.(exc.P/Trac.)-- left (17 splines 28 11/16 O.L.) pt#3739107
57 Pass,corv.(exc.P/trac)-- right (17 splines 30 3/16 O.O.) pt# 3739108
51-58 1/2 ton-- right(17 splines 29 5/8 O.L.) pt.#3694769
51-58 1/2 ton-- left(17 splines 30 5/8 O.L.) pt#3694770

No mention is made about axle diameter but the bearings are listed different.

5.855- rear axle bearings
55-56 pass.- ball bearing assy. (ND-rw507bsy-18c) pt.# 3729375
57 pass-ballbearing assy.(stamped 904262) pt.#904278
33-36 pass,comm.(exc. cc,dc,ec,fc)
37-39 comm.
40-58 1/2 ton--race assy,outer, w/roller (HY OR 1502) pt.#no 111121

DANDYD


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