Re: 1972 GMC Jimmy PENNY
I did spend some time last weekend under the hood of this thing. I was battling the temp gauge and it's next to impossible to get the sender out of the head with the manifolds on so I took the opportunity to replace the manifold gaskets (It needed them pretty badly). I pulled everything apart and discovered that my heads were most likely changed at some point, the temp sender was much smaller in diameter then the factory comparisons I had. I tried to read the stamp on the block to verify the origin of the motor but it was pretty hard to read. Either way, I am leaving everything in and together.
I replaced the temp sender, ran a new wire from the firewall to the head, fired her up and the temp gauge works great. The new manifold gaskets made a huge difference and reduced the overall exhaust sound to about half of what it was. I am really pleased with how everything is coming together. I am picking up my 15x8 rallies from the sand blaster tomorrow, I am hoping to powdercoat them Thursday and would like to have mounted next week sometime.
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