4 speed crash box - bearings - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**dennislbrooks** · 01-27-2018, 02:08 PM

This may be listed elsewhere and maybe no one cares but I disassembled a GM 1946 -- 4 speed crash box and have the following bearing list:

Input shaft to mainshaft pilot -- Open Roller cage - no number found - have not found- .875" ID x 1.25" ODx 1.5 " long ---- I need to clean up the mainshaft pilot so I will lathe it to .75" and hope to use a Koyo HJ-122016 open needle roller bearing. It has an outer case that may solve any female input shaft issues. .75"x1.25"x1" long

Input shaft bearing -- FAFNIR 209K

Rear Mainshaft --- New Departure 3307

Front Countershaft --- Hyatt ORB 1206

Rear Countershaft ---- Hyatt ORB 1207

Feel free to update or correct this list and add any cross references, etc.

01-27-2018, 02:08 PM	#1
dennislbrooks Senior Member Join Date: Feb 2004 Location: Williamsburg, Ohio Posts: 1,798	4 speed crash box - bearings This may be listed elsewhere and maybe no one cares but I disassembled a GM 1946 -- 4 speed crash box and have the following bearing list: Input shaft to mainshaft pilot -- Open Roller cage - no number found - have not found- .875" ID x 1.25" ODx 1.5 " long ---- I need to clean up the mainshaft pilot so I will lathe it to .75" and hope to use a Koyo HJ-122016 open needle roller bearing. It has an outer case that may solve any female input shaft issues. .75"x1.25"x1" long Input shaft bearing -- FAFNIR 209K Rear Mainshaft --- New Departure 3307 Front Countershaft --- Hyatt ORB 1206 Rear Countershaft ---- Hyatt ORB 1207 Feel free to update or correct this list and add any cross references, etc. __________________ 1942 Chevy 1/2 ton Rod, 1959 GMC 1/2 ton Fleet Stepside, 1967 Chevy SWB K10, 1985 Corvette Coupe 4+3, 2015 Chevy Duramax reg cab 4WD W/T Last edited by dennislbrooks; 01-28-2018 at 09:42 AM. Reason: words



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