[GypsyR]

I would also add a ground from a transmission pan bolt to the body. A strap like pictured by 66GMC is ideal. Transmission shops buy these straps by the box and most consider a transmission ground on cars like yours mandatory. I've had it proven to me that older GM vehicles in particular need such a ground. I know a transmission rebuilder who doesn't need to see the car, if it had poor grounding to the transmission he can tell just by the electrolytic damage to the transmission bushings. Such bushing damage is well known to the transmission rebuilding industry.

[Irelands child]

Originally Posted by GypsyR

I would also add a ground from a transmission pan bolt to the body. A strap like pictured by 66GMC is ideal. Transmission shops buy these straps by the box and most consider a transmission ground on cars like yours mandatory. I've had it proven to me that older GM vehicles in particular need such a ground. I know a transmission rebuilder who doesn't need to see the car, if it had poor grounding to the transmission he can tell just by the electrolytic damage to the transmission bushings. Such bushing damage is well known to the transmission rebuilding industry.

You mean something like these - 2 of my several grounds before the body went on :

[curtis73]

Originally Posted by techinspector1

That is very slick.

yes, but only because I put some dielectric grease on the threads.

Thanks for the kindness. The sponsoring thought for that idea came from when I dropped a Caddy 500 in my 66 Bonneville. I forgot the engine ground and it cranked really slowly. About the time it quit cranking there were massive amounts of smoke coming from the firewall area.

Turns out, my Lokar tranny dipstick was attempting to ground the whole thing.

I went a little overboard on grounding it the next time