Holley Sniper options
Thread Starter
Advanced
Joined: Nov 2018
Posts: 94
Likes: 55
Holley Sniper options
My dad was going to put EFI into the Corvette I inherited, but never got around to it before he passed. He replaced the motor and transmission in 2015 and put a Holley carburetor on in, but it is not a good match for the motor (350). It runs very rich. It was just a carb that was laying around and meant to be a stop gap. After doing some research, I am going with the Holley Sniper. I found a shop that will do the install. I just don't have the gear needed to run lines, pull the tank, etc.
Anyway, what are the opinions out there on the Holley Returnless option? It looks like the return happens at the tank instead of the engine compartment. I am also wondering about the Hyperspark distributor. Thanks for any opinions and experiences.
Anyway, what are the opinions out there on the Holley Returnless option? It looks like the return happens at the tank instead of the engine compartment. I am also wondering about the Hyperspark distributor. Thanks for any opinions and experiences.
Drifting
Joined: Feb 2007
Posts: 1,498
Likes: 206
From: Pearland Texas
St. Jude Donor '09
My dad was going to put EFI into the Corvette I inherited, but never got around to it before he passed. He replaced the motor and transmission in 2015 and put a Holley carburetor on in, but it is not a good match for the motor (350). It runs very rich. It was just a carb that was laying around and meant to be a stop gap. After doing some research, I am going with the Holley Sniper. I found a shop that will do the install. I just don't have the gear needed to run lines, pull the tank, etc.
Anyway, what are the opinions out there on the Holley Returnless option? It looks like the return happens at the tank instead of the engine compartment. I am also wondering about the Hyperspark distributor. Thanks for any opinions and experiences.
Anyway, what are the opinions out there on the Holley Returnless option? It looks like the return happens at the tank instead of the engine compartment. I am also wondering about the Hyperspark distributor. Thanks for any opinions and experiences.
Thread Starter
Advanced
Joined: Nov 2018
Posts: 94
Likes: 55
Is that the tank from Holley (or Tanks)? If so, does this tank move the sending unit to the top of the tank? I have never pulled my tank, and some of the videos I have seen show the sending unit on the bottom.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Keep us posted, still have a carb myself but of all the EFI setups out there the Sniper sure looks appealing (to electrical dummies like myself).
Cant bring myself to "modernize" the feel, bet it pays off when youre out and about....maybe that 20 mi run turns into 100 as youre more confident in the car and 100 deg temps dont have the effect on running that it did wiht a carb
Cant bring myself to "modernize" the feel, bet it pays off when youre out and about....maybe that 20 mi run turns into 100 as youre more confident in the car and 100 deg temps dont have the effect on running that it did wiht a carb
Thread Starter
Advanced
Joined: Nov 2018
Posts: 94
Likes: 55
Keep us posted, still have a carb myself but of all the EFI setups out there the Sniper sure looks appealing (to electrical dummies like myself).
Cant bring myself to "modernize" the feel, bet it pays off when youre out and about....maybe that 20 mi run turns into 100 as youre more confident in the car and 100 deg temps dont have the effect on running that it did wiht a carb
Cant bring myself to "modernize" the feel, bet it pays off when youre out and about....maybe that 20 mi run turns into 100 as youre more confident in the car and 100 deg temps dont have the effect on running that it did wiht a carb
Melting Slicks
Joined: Sep 2010
Posts: 3,306
Likes: 697
The pic above looks good. Looks like what is typically done for LS swaps. Fuel filter regulator is from a C5 Corvette. Regulates at 58 psi. I typically don't run hard lines. I use -6 steel braided for the return and up to the fuel rail on the engine. If you do decide to run hard line I would suggest using Ni-Cad brake line. You can buy it in different lengths and if flares like butter.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Drifting
Joined: Feb 2007
Posts: 1,498
Likes: 206
From: Pearland Texas
St. Jude Donor '09
Top Sending Unit
Its from Tanks Inc. Same one holley sells for them. You do have to purchase a new sending unit that goes to the top of tank!
Thread Starter
Advanced
Joined: Nov 2018
Posts: 94
Likes: 55
I have a '72. Right now I am leaning toward a new tank with the returnless unit. I am still in the fact finding stage, and I have not nailed down where I am going to do it. I could do this myself if I had better access to the underside. I am considering a Quickjack or the like as the install price is kind of high.