The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**Canuckvetter** · 07-28-2021, 07:03 PM

Making a 4000RPM mechanical tachometer read 8000 RPM with a 50% gear reduction at the distributor. I’m going to re-do the red line to read 5500 RPM

https://67-72chevytrucks.com/vboard/...1&d=1627513183

07-28-2021, 07:03 PM	#1
Canuckvetter How did I get this OLD! Join Date: Dec 2014 Location: Lamont County, AB, CANADA Posts: 1,042	4000RPM tach read on an 8000RPM lens Making a 4000RPM mechanical tachometer read 8000 RPM with a 50% gear reduction at the distributor. I’m going to re-do the red line to read 5500 RPM https://67-72chevytrucks.com/vboard/...1&d=1627513183 Attached Images __________________ 1967 Oshawa built LWB Fleetside. 327,3 OTT, 515 Vermilion, CST, PS, PB, Shoulder Harness, Tach,Vac, Speed Warning, Choke Delete, Manual Throttle, Fawn interior. Dealer installed A/C 04/2015, N34 Rosewood Wheel 06/2023 Members who I have met personally. Metaldoc, chevnkevin, 62 Longbed, 72LHorn, 72MARIO, YBNORML, TBONE1964, Classic Bowties, Chevemall, Dagnabbitt.