Factory gauges reading high - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Kcorey · 02-24-2019, 10:02 AM

Hey guys I’ve got a 72 cheyenne super k20. I just put a rebuilt sbc 350 ( truck originally came with a 350/th350/np205) in it . It has a factory tachometer in the dash. I installed a MSD ready to run distributor with separate coil. The tachometer is reading around 6-700 rpm higher then the engine is actually turning when I am cruising ( verified with timing light ). Also my engine temperature is almost pinned in the hot and the engine is at 180* verified with thermal imager . Any thoughts on how to correct the factory gauges ?

02-24-2019, 10:02 AM	#1
Kcorey Registered User Join Date: Jan 2018 Location: Madison CT Posts: 64	Factory gauges reading high Hey guys I’ve got a 72 cheyenne super k20. I just put a rebuilt sbc 350 ( truck originally came with a 350/th350/np205) in it . It has a factory tachometer in the dash. I installed a MSD ready to run distributor with separate coil. The tachometer is reading around 6-700 rpm higher then the engine is actually turning when I am cruising ( verified with timing light ). Also my engine temperature is almost pinned in the hot and the engine is at 180* verified with thermal imager . Any thoughts on how to correct the factory gauges ? __________________ 1970 Chevy c10 SWB twin turbo LS3. 1972 Chevy k20 super cheyenne.



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