The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Will stock GM HEI work on an original Tachometer?

**Palf70Step** · 05-16-2022, 07:40 AM

The one on mine is not accurate. Have tried all the tricks mentioned to make them compatible, but the RPMs change and get off by over 1000 RPMs the higher you go in the RPM range. Works perfect on a non-HEI distributor, just not on the HEI.

05-16-2022, 07:40 AM	#4
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,643	Re: Will stock GM HEI work on an original Tachometer? The one on mine is not accurate. Have tried all the tricks mentioned to make them compatible, but the RPMs change and get off by over 1000 RPMs the higher you go in the RPM range. Works perfect on a non-HEI distributor, just not on the HEI. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!