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This may sound like a bunch of worthless babble to the long time users of this site but a few years ago a lot of us knew very little about what we had and what we needed. For the benefit of the new folks this should provide some information should they end up with a standard shift van. Soooooooo
This is an attempt to alleviate some confusion between the Borg-Warner T-19 flywheels found mostly but not always in the standard shift Ford vans and the elusive GM SM-465 flywheel found mostly but again not always in a standard shift Chevrolet vans. I first measured the thickness of each. The Borg-Warner flywheel measured out to 1.312 inches. The GM version measures out to 1.830 inches. This means the GM version is .518 inches thicker. The pilot bearing bores are also different. The Borg-Warner uses a 6303 double plastic sealed non relube type bearing. The GM version uses a 6302 double plastic sealed non relube type bearing. Do not use the metal sealed relube type in either application as they permit the grease to be expelled and dirt can then enter. Both of mine have the wrong type of bearing.
Overall the both flywheels have the same clutch mounting bolt pattern and are almost identical except for the overall thickness and the pilot bearing bores. Both are 13-1/2 inches in diameter with both center bore areas being 6-3/8 inches. The GM SM-465 is casting number 3913055; the Borg Warner T-19 version has the casting number 3906613. Flywheel to crankshaft bolts, Cummins 3901395, 8 each required.
The Ford/Borg Warner 11" set up:
Pressure plate: LUK #98202 This has a "dual mounting pattern" for either the 3 pairs or 6 evenly spaced mounting bolt pattern.
Clutch Disk: LUK #76500 11" x 1-1/16" x 10 splines
The GM/SM 465 12" set up:
Pressure plate: LUK #99400 This has the standard mounting pattern that GM used on the V8's clear back into the 1960's.
Clutch disk: LUK #97501 11-15/16" OD friction surface x 1-1/8" x 10 splines. Important NOTE the outside diameter.
If you ever need to use a Chevy disk with the Ford/BW set up the one from a 68 V8 with the 11" clutch fits perfectly inside of the Ford/BW dual pattern pressure plate.
All the GM location mounting holes [6 evenly spaced ones] are all the same mounting diameter to accept 3/8" fastening bolts.
The LUK PART NUMBERS are stamped on the parts; disk flywheel side PP rear cover, from the parts I have had on hand.
This is an attempt to alleviate some confusion between the Borg-Warner T-19 flywheels found mostly but not always in the standard shift Ford vans and the elusive GM SM-465 flywheel found mostly but again not always in a standard shift Chevrolet vans. I first measured the thickness of each. The Borg-Warner flywheel measured out to 1.312 inches. The GM version measures out to 1.830 inches. This means the GM version is .518 inches thicker. The pilot bearing bores are also different. The Borg-Warner uses a 6303 double plastic sealed non relube type bearing. The GM version uses a 6302 double plastic sealed non relube type bearing. Do not use the metal sealed relube type in either application as they permit the grease to be expelled and dirt can then enter. Both of mine have the wrong type of bearing.
Overall the both flywheels have the same clutch mounting bolt pattern and are almost identical except for the overall thickness and the pilot bearing bores. Both are 13-1/2 inches in diameter with both center bore areas being 6-3/8 inches. The GM SM-465 is casting number 3913055; the Borg Warner T-19 version has the casting number 3906613. Flywheel to crankshaft bolts, Cummins 3901395, 8 each required.
The Ford/Borg Warner 11" set up:
Pressure plate: LUK #98202 This has a "dual mounting pattern" for either the 3 pairs or 6 evenly spaced mounting bolt pattern.
Clutch Disk: LUK #76500 11" x 1-1/16" x 10 splines
The GM/SM 465 12" set up:
Pressure plate: LUK #99400 This has the standard mounting pattern that GM used on the V8's clear back into the 1960's.
Clutch disk: LUK #97501 11-15/16" OD friction surface x 1-1/8" x 10 splines. Important NOTE the outside diameter.
If you ever need to use a Chevy disk with the Ford/BW set up the one from a 68 V8 with the 11" clutch fits perfectly inside of the Ford/BW dual pattern pressure plate.
All the GM location mounting holes [6 evenly spaced ones] are all the same mounting diameter to accept 3/8" fastening bolts.
The LUK PART NUMBERS are stamped on the parts; disk flywheel side PP rear cover, from the parts I have had on hand.
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