Holley is having a really good Labor Day sale and I’m gonna pull the trigger on Sniper 2.

My 72 still has the original distributor with the cable Drive tachometer. I know it all has to go to get tachometer signal for the EFI but looking for information from someone who has done the conversion.

going to call Holley tech to make sure I get everything I need to make the EFI work but is there anything else I should be aware of for my specific application. What tach should I be looking for and how to adapt it to the Holley distributor?

thank you,
Dusty

 

Maybe find out if the sniper 2 will work with the MSD 8572 billet dist. it has a mechanical tach drive so you can continue to use your stock tach.
Pat

 

I have the Holley Stealth Sniper on my 1968 C3 Corvette and it is a great system to use. I have the MSD Distributor with the tach drive and it all works with my Sniper system. My ignition box is a MSD 6-AL and I am still using it while running the Stealth Sniper.

It is easy to modify the MSD distributor for use with the Holley EFI system. I removed the vacuum advance and then the centrifugal advance as well.

The only real suggestion I want to make is to suggest that you speak with the guys at EFISYSTEMPRO.COM. They are a Holley Dealer but they have a Tier 3 Holley EFI Technician working for them. When I was looking around I was worried about getting the conversion done completely. The guys at Efisystempro offered me 24 months of POST-Sale support to ensure that the system is working to your satisfaction.. They have the parts in stock and offer good prices. I had budgeted an amount and after done I still had almost $700 after we finished my order. Two days later it was in my hands! Happy Customer!

I was planning on a tank replacement until I learned about the Holley OEM Fuel Tank Modules which allowed me to use my factory tank with a new pickup. The fuel pump and fuel pressure regulator are on the new pickup plate along with a nice piece of Holley's Hydramat. The fuel system took less than 1/2 hour to set up on my C3, the whole system was very easy to install.

Next I am planning on going to a multi port fuel injection using the Holley Terminator Controller. Again I will be working with my friends at efisystempro.com to buy the parts and sensors I will need. Holley does make a nice EFI system, the software is amazing as it can do so much and it is very easy to customize to your application.

Good Luck with your future system!

 

Exactly what I was looking for. Thank you!

 

Slightly related, it looks like Holleys Labor Day “sale” is just the prices jacked up and discounted back to the same price they were a week ago. Is anyone else experiencing the same thing?

 

Dusty;
Nice 72!
Just so you know, my local corvette shop refuses to put a sniper 1 or 2 on a c3 any more.
Due to multiple fitment, tuning, running & reliability issues.
First off, they do not fit a stock type air cleaner very well, and do not fit under a std 72 c3 hood very well.
They strongly suggest you go for the terminator X.
It has a Holley 4150 style efi unit that actually fits well, a separate ecm module that can be located somewhere cooler, and better tuning software.
It just fits, tunes and runs better and easier.

 

Check the Sniper for Dummies Sticky. It has a lot of great information in it. I'm using my MSD tach drive with a Digital 6AL box. The MSD box can supply the tach signal to the Sniper 2 which is the way I'm running it now. I'm still using my MSD distributor as the timing control. I'll eventually move to the hyper-spark but wanted to sort out any issues with the Sniper 2 fuel delivery before making that move.

 

I have a Blueprint 383 with Sniper 2 and Hyperspark (Currently tach doesn't work). I had a build a throttle extension to improve throttle control. The Holley extension wouldn't fit with the drop base air cleaner. I have a 1/2" spacer under the air cleaner and it still wouldn't fit. My next step is to build a custom spark advance curve.

 

Here's my 350 1972 with a Sniper 2 fitted to an Edelbrock 2101 manifold.
Hyperspark distributor and round canister style coil under the stock shielding.



A quick 3D printed spacer to accept the original air cleaner indents and to suit the round Sniper 2 body.


Plenty of room under my stock flat hood.


Cut off the original air cleaner 1" breather tube and replaced with a 3/4" tube at about a 10° angle


Even looks stock(ish) under there, unless you bend down.


Have only had it back on the road for about a month, winter here.
Only problem was created by me when extending the cts wire and had created bad joins.

 

The MSD 8572 will work with the Sniper just fine. Not 100% on the Sniper 2, but the original sniper could be run without the timing control. That would let you spread the expense(and the work) out a little if needed . If you do the install yourself. pay close attention to the wiring instructions. Good connections and good grounds are critical. When it says 'direct to battery" it really means direct to battery. Not to the fusebox or another wire. The only issue I had was I did cook a few O2 sensors over the years.

Second to what ctmcloskey said about Efisystempro. Chris over there was more help than anyone at Holley ever was. Very knowledgeable and he now has more staffing to help with the tech and shipping end. Great guy...great company...honest support and fair pricing too. It looks like they have Holley days pricing on their website. Give them a shout. Truly the best I found