Holley Sniper EFI and Tachometer

[64Orange]

Good afternoon FBBO!

For anyone using a Holley Sniper EFI set up, how did you set up your tachometer?
I am not sure what kind of wiring or set up I need.

Thank you!

 

[BeepBeepRR]

factory tach? I had to use a MSD Tach Adapter to get the correct reading. But I used the Holley Sniper with the Holley Hyper Spark setup. Depends on what you are using for ignition. Most factory setups use a grey wire from the tach to the negative post on the coil. The Hyperspark is a little different so I had to use the tach adapter to make the factory tach work correctly.

MSD Ignition 8920 MSD Magnetic Pickup Tach Adapters | Summit Racing

Free Shipping - MSD Magnetic Pickup Tach Adapters with qualifying orders of $109. Shop Tachometer Adapters at Summit Racing.

www.summitracing.com

 

[64Orange]

I don't have a tach yet. I see they have a Holley EFi tach but it doesn't look anywhere close era correct.

 

[64Orange]

factory tach? I had to use a MSD Tach Adapter to get the correct reading. But I used the Holley Sniper with the Holley Hyper Spark setup. Depends on what you are using for ignition. Most factory setups use a grey wire from the tach to the negative post on the coil. The Hyperspark is a little different so I had to use the tach adapter to make the factory tach work correctly.

MSD Ignition 8920 MSD Magnetic Pickup Tach Adapters | Summit Racing

Free Shipping - MSD Magnetic Pickup Tach Adapters with qualifying orders of $109. Shop Tachometer Adapters at Summit Racing.

www.summitracing.com

Let me check on the setup. I think I also have the hyperspark set up

 

[threewood]

Dark Brown wire off the 10 pin connector. It was the only wire off that connector I used. I'm using an Autometer.

 

[BeepBeepRR]

I'll have to check and see but the brown wire seems to be what I used for the tach signal. Its in the supplemental harness which is also for electric fans and what not. I have to download the manuals real quick.

 

[64Orange]

I am using a Sniper EFI hyperspark system: distributor, ignition, and ignition coil. I was wondering if I could use a Sun tach or Stewart Warner tach. I'll have to dig deeper about that brown wire. And what kind of Autometer are you using? I know they have a few in their line up that looks vintage

 

[kiwigtx]

Dark Brown wire off the 10 pin connector. It was the only wire off that connector I used. I'm using an Autometer.View attachment 1495849

Same here....I'm using a repro Sun Tach and it is pretty dang accurate from the Sniper readings.

 

[kiwigtx]

 

[kiwigtx]

 

[64Orange]

View attachment 1496023

View attachment 1496024

That's awesome!

 

[64Orange]

Same here....I'm using a repro Sun Tach and it is pretty dang accurate from the Sniper readings.

That's great! Which wire are you using and where does it come from?

 

[kiwigtx]

That's great! Which wire are you using and where does it come from?

The brown wire from the 10-way plug - blue and green are used on the ignition on the same plug....nothing else used on mine.

A bit untidy for now...undergoing a small re-wire in the coming weeks.

 

[64Orange]

Awesome! This is really helpful! Thank you.
About how much did that repro Sun tach cost?

 

[kiwigtx]

Awesome! This is really helpful! Thank you.
About how much did that repro Sun tach cost?

I bought it probably 8 years ago....around $140

Summit Racing have changed it slightly...now it's called a Bosch...same thing without the logo.

Bosch Performance SP0F000062 Bosch Retro Line Tachometer Gauges | Summit Racing

 

[64Orange]

I bought it probably 8 years ago....around $140

Summit Racing have changed it slightly...now it's called a Bosch...same thing without the logo.

Bosch Performance SP0F000062 Bosch Retro Line Tachometer Gauges | Summit Racing

View attachment 1496507

Radical! That's aweome. Thank you