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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jun 2012 Posts: 197 Shop Shark | | Shop Shark Joined: Jun 2012 Posts: 197 | Can't get a tach to read right! First I tried an old Sears tach (looks like what Equus is selling now), this one had a 4-6-8 switch. No joy. Worked great on the 350 it was on before, and would jump from 1,000rpm on the six setting to 750rpm on the eight setting, like it should, but reads about 450 @ 600, 1,500 at around 2,000.
Got an Autometer Autogage tach a couple days ago, same thing. Works fine, just not on the six. This one doesn't even have a switch, you cut wires.
What the $#@&? Both tachs worked fine on a 350 with points. (The 230 has the stock point setup, too.) My Sears "Engine Analyzer" reads fine, as does my other dwell meter/tach. I even held the tach terminals to the battery itself for kicks, no change. The engine runs great. What is going on?!?
Signed,
Bewildered
Some of my crap: 1963 C-30 flatbed dually 292/SM420 1965 C-10 LWB fleet 250/column shift 3 speed 1965 C-30 9' stepside 250/SM420/4.10 gears (my DD) Website I made for my crap: http://www.66submarine.com | | | | | Joined: Oct 2002 Posts: 4,066 Bolter | | Bolter Joined: Oct 2002 Posts: 4,066 | capacitor probably needs to be changed...
Redryder pixMy HotrodA veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of "up to and including my life."I am fighting cancer and I am winning the fight | Pain is part of life; misery is an option. | | | | | Joined: Jun 2012 Posts: 197 Shop Shark | | Shop Shark Joined: Jun 2012 Posts: 197 | Tried another condenser, nothing. Even swapped coils in a moment of desperation/frustration, nothin'. Engine runs perfectly.
Last edited by 66Submarine; 07/02/2012 5:09 PM.
Some of my crap: 1963 C-30 flatbed dually 292/SM420 1965 C-10 LWB fleet 250/column shift 3 speed 1965 C-30 9' stepside 250/SM420/4.10 gears (my DD) Website I made for my crap: http://www.66submarine.com | | |
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