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Old 06-13-2017, 12:58 PM   #49
Graham57a
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Join Date: Aug 2010
Location: Asheville, North Carolina
Posts: 1,838
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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1972 Chevy SWB Cheyenne Super JANE http://67-72chevytrucks.com/vboard/s...d.php?t=462072
1972 GMC Jimmy PENNY http://67-72chevytrucks.com/vboard/s...d.php?t=735827
1968 GMC patina swb PEARL http://67-72chevytrucks.com/vboard/s...d.php?t=731315
1972 Chevy K20 BRUCE http://67-72chevytrucks.com/vboard/s...d.php?t=805788
1972 Chevy SWB Highlander OLIVE Build thread coming
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