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#1 |
70+ ( Old Skool Club )
![]() Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,119
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Cajun Tach Shop Upgrade
I bought the pictured Tach Board off EBay from the Cajun Tach Shop Store and a friend installed in my factory original tach. My tach was always reading 7-800 RPM high at highway speeds. With this new board its very accurate now. Just passing along in case someone having the same issues. I have the Petronix Stock look Distributor and components on the truck.
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1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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#2 |
Senior Member
![]() Join Date: Sep 2014
Location: Lake Tapps, Wa.
Posts: 627
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Re: Cajun Tach Shop Upgrade
I can also recommend Greg @ https://www.cajuntachshop.com/
My OE tach finally gave up so I replaced it with an after market tach. The replacement tachometer only lasted a couple of years. I sent both to Greg for the upgrades he had been working on and he successfully repaired both.
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Sam 1972 C10 LWB 2020 Z71 Tahoe |
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#3 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,268
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Re: Cajun Tach Shop Upgrade
Pertronix Ignitor I and II are OK with any Tach. Ignitor III is an electronic multi spark unit like MSD. A friend with a '72 F-250 and 429 BBF had the mark III, and his tach went crazy. He called Pertronix, and they told him to retrofit to a mark II if he wanted to run a Tach.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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