I'm rebuilding the foot-operated starter on my 1957 Chevrolet 3100 with a 235 and could use some help identifying the correct starter drive.
The starter is a Delco-Remy 1107634, 12 volt. The drive-end housing/nose has 440 cast into it.
The starter had been having intermittent engagement problems. After taking it apart, I found that the old 9-tooth drive is considerably different dimensionally from the replacement NAPA/Echlin SRK104 drive listed for the application.
Old drive:
9 teeth Pinion width: 0.89" Pinion OD: 0.81" Length from back of pinion/drive body to beginning of shift-lever collar: 1.302" Shift-lever collar width: 0.763"
The big issue is the roughly 0.56" difference in the length between the pinion/drive body and shift-lever collar. The SRK104 does not appear capable of positioning the pinion in the same location as the old drive.
NAPA has ordered an SRK101 for me so I can compare it before buying it, but it won't arrive until the 27th.
I've also disassembled the starter, cleaned up the commutator and put in new bushing. The starter otherwise appears very rebuildable, so I'd prefer to keep the original-style foot starter rather than replace it with a modern starter.
For comparison, the overall armature shaft length, measured end-to-end, is 11.687".
I'm trying to determine:
What is the original Delco-Remy drive/Bendix part number for starter 1107634? Does anyone have an old Delco-Remy, AEA, Echlin or other parts catalog that gives the correct interchange? Is the 440 nose casting correct for a 1107634? Does the 11.687" armature/shaft in the photos look correct for a 1107634? Does anyone recognize the old long drive or know a currently available replacement for it?
I'll attach photos of the Delco tag, 440 nose casting, armature/shaft, old and new drives, and my measurement sketch.
