Need A Picture of Stock Tach Harness Firewall Hole Needed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JimKshortstep4x4 · 03-25-2005, 08:57 PM

The hole is 3/4" in diameter. If you notice there are (3) dimples in the firewall plus the hole. You should have a dimple in the location where the hole is in the pic.

Skokie,

The 70 is different and I am not sure which location the tach wire hole was in
since the bottom two dimple locations on the 70 has holes, (one was tach, the other was the kickdown wire. To be safe, someone with a 68 should let you know where the tach wire location is.

Jim

03-25-2005, 08:57 PM	#5
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	The hole is 3/4" in diameter. If you notice there are (3) dimples in the firewall plus the hole. You should have a dimple in the location where the hole is in the pic. Skokie, The 70 is different and I am not sure which location the tach wire hole was in since the bottom two dimple locations on the 70 has holes, (one was tach, the other was the kickdown wire. To be safe, someone with a 68 should let you know where the tach wire location is. Jim



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