Th-375 tranny - The 1947 - Present Chevrolet & GMC Truck Message Board Network

4LUG39 · 10-26-2010, 10:07 AM

THM375 - This transmission is a derivative of the THM400 sharing the external appearance of the 400. It'll be marked 375-THM on the bottom of the tailshaft housing. It's a light duty version of the THM400, has ABSOLUTELY NO RELATION to the THM375B, and was found in 1972 to 1976 full-size cars. The Turbo 375 was modified to accept the Turbo 350 driveshaft yoke.

THM375B - This trans is identical to the THM350, but is considered a heavier duty transmission.

I know of the trans, but I have no idea how to change the speedo.

10-26-2010, 10:07 AM	#1
4LUG39 Registered User Join Date: Jun 2004 Location: Bastrop,Texas Posts: 61	Re: Th-375 tranny THM375 - This transmission is a derivative of the THM400 sharing the external appearance of the 400. It'll be marked 375-THM on the bottom of the tailshaft housing. It's a light duty version of the THM400, has ABSOLUTELY NO RELATION to the THM375B, and was found in 1972 to 1976 full-size cars. The Turbo 375 was modified to accept the Turbo 350 driveshaft yoke. THM375B - This trans is identical to the THM350, but is considered a heavier duty transmission. I know of the trans, but I have no idea how to change the speedo. __________________ Ain't no way in the world I'm going out that front door. 69 SWB Fleetside 327/5spd 76 blazer 383/700R4 95 2Dr Tahoe 5.7 4x4 LT Last edited by 4LUG39; 10-26-2010 at 10:09 AM.



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