tach

[daylight]

howdy im a newbee just got myself a 1978 stepside with a 250 inline 6 with 3 speed on the tree. the guage cluster no gauges. on ebay found instrument cluster with gauges, tach, speedo, oil, volt, water temp, gas. will a tach of v8 work on a inline 6 now im just guessing it off a v8? will swap work, with the other gauges?

thanks gil

 

[Charlie]

 

[Snoots]

The 8 cylinder tach will read 25% low with a 6 cylinder engine. All other gauges will work fine.

How good are you with a soldering iron?

 

[daylight]

howdy thanks for reply. what the plan?

 

[Obwonkonobe]

The 8 cylinder tach will read 25% low with a 6 cylinder engine. All other gauges will work fine.

How good are you with a soldering iron?

I have a v8 and want a tach too, do you know of a way to convert between the 2?

 

[daylight]

howdy no

 

[Snoots]

I though it was one of those that you can replace components, but no.
The entire circuit is encapsulated.
You'll have to Google search for, or try sleezeBay for a converter.

You must be registered for see images attach

 

[Lefty5121]

So you can’t just swap out the gas gauge for a tach then?

 

[Obwonkonobe]

So you can’t just swap out the gas gauge for a tach then?

Even if you get a v8 tach, you need to rewire the rear bulk connector so the tach gets proper sig 12v and gnd

 

[daylight]

howdy i can use the v8 tach but with tach-adapt from ashlocktech 65 plus shipping bakerelectronix 60 plus shipping. well it's price i have to pay for a tach. thanks for the replies

 

[Dutch Rutter]

I thought the tachs which took the place of the fuel gauge wired like a normal aftermarket tach and the small fuel gauge still plugged into the main board. Kind of like these. http://www.gmsports.com/content/new-tachometer-1973-1988-chevy-and-gmc-trucks

 

[daylight]

thanks for the reply

 

[Snoots]

Even if you get a v8 tach, you need to rewire the rear bulk connector so the tach gets proper sig 12v and gnd

Tach has its own harness, not part of the cluster harness.

 

[Obwonkonobe]

Tach has its own harness, not part of the cluster harness.

Ah, my bad

 

[daylight]

howdy oh the tach harness waiting for the tach-adapt to splice it in

thanks gil