THM 400 VSS and Cable - The 1947 - Present Chevrolet & GMC Truck Message Board Network

smogdave · 06-20-2009, 12:44 AM

I installed a 1988 454 TBI with the original THM400 transmission in my 1976 pickup. Everything works great, the only problem that I need to solve is the speedometer. The THM 400 has a VSS and no speedometer cable and I would like to know if anyone knows of a part that I can use to have the VSS and a cable combined. I adapted all of the 1988 wiring harness to work with all functions of the switches and dash except for the speedometer. Does anyone have any information for the conversion?

06-20-2009, 12:44 AM	#1
smogdave Registered User Join Date: May 2009 Location: Newark, California Posts: 15	THM 400 VSS and Cable I installed a 1988 454 TBI with the original THM400 transmission in my 1976 pickup. Everything works great, the only problem that I need to solve is the speedometer. The THM 400 has a VSS and no speedometer cable and I would like to know if anyone knows of a part that I can use to have the VSS and a cable combined. I adapted all of the 1988 wiring harness to work with all functions of the switches and dash except for the speedometer. Does anyone have any information for the conversion?

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