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04-16-2009, 09:20 PM
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#1 |
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Registered User
 Join Date: Jan 2009
Location: rolla mo
Posts: 16
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tach prombles
just wanting to know is the stock tach.they tell me i have to buy a tachometer
adaptor.in oder to make it work with a HEI Distributor.is this true?please let me know if this is true.thanks leroy. |
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04-16-2009, 09:31 PM
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#2 |
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Future TOTM Winner
Join Date: Aug 2006
Location: Bulverde, TX
Posts: 2,692
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Re: tach prombles
Nope it's not true, a factory tack will wire right up to an HEI dist.
__________________
72 Chevy CST K5 HIGHLANDER BLAZER Getting a 6.0,NV4500,NP205,14BFF (Currently laying all over the place in little pieces) 72 Chevy swb step-side "LS" 6.0 Here's a build thread of sorts 2002 HD2500 Crew Cab, 8.1L Allison 4x4 Daily Driver Check it out www.lsdyno.com |
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04-16-2009, 11:35 PM
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#3 |
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Registered User
Join Date: Jan 2009
Location: rolla mo
Posts: 16
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Re: tach prombles
thank you for your response.but i know it will wire up.that not the promble.it works. but it is not working right.it works but very little.the rpm comes up but only a bit.when i give it the gas.it barley rises.the tech at classic industries. said i need a tach adaptor so it will read right.the after market tach. says note:tachs are NOT for use with HEI DIST,IF ANY BODY KNOWS LET ME KNOW PLEASE. THANKS VERY MUCH LEROY. MY PHONE NUMBER IS 573-308-6722.
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04-16-2009, 11:50 PM
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#4 |
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Future TOTM Winner
Join Date: Aug 2006
Location: Bulverde, TX
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Re: tach prombles
The only "tach adapter" that I am aware of is used when dealing with a newer style engine with things such as "Coil on plug" ignitions etc. Just for clarification, what year truck/engine are you dealing with???
Also, a V8 engine needs a V8 tach, 6 cylinder needs a 6 cylinder tach..etc.
__________________
72 Chevy CST K5 HIGHLANDER BLAZER Getting a 6.0,NV4500,NP205,14BFF (Currently laying all over the place in little pieces) 72 Chevy swb step-side "LS" 6.0 Here's a build thread of sorts 2002 HD2500 Crew Cab, 8.1L Allison 4x4 Daily Driver Check it out www.lsdyno.com Last edited by Critter; 04-16-2009 at 11:51 PM. |
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04-17-2009, 12:29 AM
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#5 |
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Registered User
Join Date: Jan 2009
Location: rolla mo
Posts: 16
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Re: tach prombles
The tach came out of a 67 chevy big truck.with and old dist.and coil pack on it. My truck is a 68 chevy with a 396 big block in it.and a hei dist.and the tach is not working or reading right.it moves but just a little bit.something is wrong.
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04-17-2009, 12:52 AM
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#6 | |
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Future TOTM Winner
Join Date: Aug 2006
Location: Bulverde, TX
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Re: tach prombles
Quote:
Assuming your tach is for a V8, and lets also assume the tach wire is connected to the proper terminal on the HEI and the guage is grounded properly. If all that is good then I would say that you possibly have a bad tach. Have you seen it work correctly previously or is this your first time to hook it up? These original tachs should all have "V8" or "V6" stamped on the back of them.
__________________
72 Chevy CST K5 HIGHLANDER BLAZER Getting a 6.0,NV4500,NP205,14BFF (Currently laying all over the place in little pieces) 72 Chevy swb step-side "LS" 6.0 Here's a build thread of sorts 2002 HD2500 Crew Cab, 8.1L Allison 4x4 Daily Driver Check it out www.lsdyno.com Last edited by Critter; 04-17-2009 at 12:52 AM. |
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04-17-2009, 01:02 AM
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#7 |
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Future TOTM Winner
Join Date: Aug 2006
Location: Bulverde, TX
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Re: tach prombles
I hate not being able to edit anymore...
I said V6 before...meant Inline 6
__________________
72 Chevy CST K5 HIGHLANDER BLAZER Getting a 6.0,NV4500,NP205,14BFF (Currently laying all over the place in little pieces) 72 Chevy swb step-side "LS" 6.0 Here's a build thread of sorts 2002 HD2500 Crew Cab, 8.1L Allison 4x4 Daily Driver Check it out www.lsdyno.com |
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04-17-2009, 08:56 AM
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#8 |
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I'm a poor spectator
Join Date: Aug 2006
Location: San Antonio, Tx
Posts: 2,287
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Re: tach prombles
Critter hit it on the head of the nail.
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2006 Jeep Unlimited IMPACT ORANGE 1993 Chevy 2500 4x4 ExCab LWB 454/NV4500 Tow rig  1977 Ford F100 2x4 LWB 1st truck I owned, still have it!!!  1979 Ford F150 4x4 SWB Built Ford Tough!!!  1971 Chevy Blazer 350 / SM465 / NP205 UNDER CONSTRUCTION Soon to have a LQ4 6.0!!! |
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04-19-2009, 09:36 PM
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#9 |
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Registered User
Join Date: Jan 2008
Location: PENDLETON,INDIANA
Posts: 271
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Re: tach prombles
Well not only inline 6 cyls but didnt they have some huge cubic inch v6 like in the 380's??
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04-19-2009, 10:15 PM
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#10 | |
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Future TOTM Winner
Join Date: Aug 2006
Location: Bulverde, TX
Posts: 2,692
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Re: tach prombles
Quote:
__________________
72 Chevy CST K5 HIGHLANDER BLAZER Getting a 6.0,NV4500,NP205,14BFF (Currently laying all over the place in little pieces) 72 Chevy swb step-side "LS" 6.0 Here's a build thread of sorts 2002 HD2500 Crew Cab, 8.1L Allison 4x4 Daily Driver Check it out www.lsdyno.com Last edited by Critter; 04-19-2009 at 10:16 PM. |
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