3 Speed standard question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Canuckvetter** · 03-31-2018, 06:22 PM

Can anyone tell me what my speedometer drive gear tooth count is with a Saginaw 3 speed and 3.73 factory diff? I switched out the rear end for a 3.07 and need to replace the driven gear.

notsolo · 03-31-2018, 08:20 PM

You need the trans calculator to figure it out, tire size, how tall. ...and how many teeth on the drive gear + the 3.07 rear.. . I'll post it if I find it.

03-31-2018, 06:22 PM	#1
Canuckvetter How did I get this OLD! Join Date: Dec 2014 Location: Lamont County, AB, CANADA Posts: 1,047	3 Speed standard question Can anyone tell me what my speedometer drive gear tooth count is with a Saginaw 3 speed and 3.73 factory diff? I switched out the rear end for a 3.07 and need to replace the driven gear. __________________ 1967 Oshawa built LWB Fleetside. 327,3 OTT, 515 Vermilion, CST, PS, PB, Shoulder Harness, Tach,Vac, Speed Warning, Choke Delete, Manual Throttle, Fawn interior. Dealer installed A/C 04/2015, N34 Rosewood Wheel 06/2023 Members who I have met personally. Metaldoc, chevnkevin, 62 Longbed, 72LHorn, 72MARIO, YBNORML, TBONE1964, Classic Bowties, Chevemall, Dagnabbitt.

03-31-2018, 08:20 PM	#2
notsolo Registered User Join Date: Apr 2008 Location: Md Posts: 2,482	Re: 3 Speed standard question You need the trans calculator to figure it out, tire size, how tall. ...and how many teeth on the drive gear + the 3.07 rear.. . I'll post it if I find it. Attached Images __________________ http://67-72chevytrucks.com/vboard/s...d.php?t=635605



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