Hello all, I was wondering if anyone has done an efi conversion on their vehicle. I had the Holley Sniper installed and am very happy with the system except for the very annoying noise coming from the in line fuel pump. I am looking to go to an in tank pump but the retro fit pumps from Holley are for tanks that are at least 7 inches deep. Just wondering if anyone has dealt with this same issue. I do apologize if I have posted this in the wrong area as I am not super familiar with the site. Thanks for any input or advise

Views: 161

Reply to This

Replies to This Discussion

Hi Charles,

I have the Holley Sniper in my car and I'm using an in-tank pump.  I used the Holley in-tank module part number 12-130, but that is for tanks 7" deep at a minimum, so I had to modify the way it drops in.  I also bought a new tank (The same one they sell at OPGI) and it has a recess stamped in it that creates room for modern drop in EFI pumps.  The orginal tank doesn't have this recess.  Anyway, I had to modify the pump and the mod isn't for the faint of heart because the pump is expensive.  You basically have to modify the bracket and the tubing so that it drops in on an angle instead of straight down.  The pickup Holley uses is called "hydramat".  Holley makes different shapes than the straight piece provided.  I can't recall which one I used on mine.  I've had mine running since 2018 and never had an issue - the sniper is the best mod I ever made and you really can't tell it's there under the factory air cleaner (which I modified to fit the larger sniper inlet).

Hope that helps!

Just found this article.  Wish this was available in 2018 when I did mine...How To Install A Sniper EFI Fuel Pump Module Kit Into A Shallow Fue...



  • Add Photos
  • View All


Hood for 1964 Cadillac DeVille Convertible

Started by Ray Jacobs in Wanted to Buy. Last reply by Russ Austin 11 hours ago. 1 Reply

Hello. I'm new to this site and this is my first post. I'm looking for a hood for my 64 Cadillac DeVille Convertible in as good condition as possible.  I would appreciate any help in locating a…Continue

Tags: Convertible, Hood, Ville, De, Cadillac

Chrome trim molding

Started by Dennis P. DiBari in 1963/64 Cadillac Specific Discussion 17 hours ago. 0 Replies

Hi Jason,     I was looking for the thin trim molding for the front passenger side fender for my 64 Coupe - Series 62.  It measures 65 3/4" long.  Do you have any piece like that I can purchase?  If…Continue

Pertronix 3 install and resistor wire

Started by Dave Fehrle in 1963/64 Cadillac Specific Discussion. Last reply by Dennis P. DiBari yesterday. 14 Replies

A few questions on the resistor wire, what color is it in the pic? The yellow/blue or black? And connecting to the ACC on the fuse box seems easiest way to go with the new switched wire, but where…Continue

Front fender splash guard bracket

Started by Dennis P. DiBari in 1963/64 Cadillac Specific Discussion. Last reply by Dennis P. DiBari on Saturday. 7 Replies

Hi Jason,     I am looking to purchase a front fender splash guard bracket for my 1964 Series 62 - passenger side.  I saw your post from a few years back with the picture you posted.  Anywhere I can…Continue

Blog Posts

accumulator dryer

Posted by CHRIS CARLSON on December 6, 2023 at 10:54am 0 Comments

Who rebuilds original AC  accumulator dryers for 1964 Cadillac? I have been on Classic auto air in Tampa FL wait list for over a year ,  There is one on Old air products web site that looks very similar to the original # 21-4214A but states it fits 1962 Gm cars, The one recommended for a 1964 Cadillac is half the length 21-4215A    What  is everyone using ? I would prefer to be as original as possible. Thanks

'63 Eldorado trumpet horn + 2 standard horns restoration

Posted by Les Eastling on November 15, 2023 at 10:34am 1 Comment

My son, unbeknownst to me, had all three of the horns on our 1963 Eldorado completely restored. We had recently added the Eldorado trumpet horn to the two standard horns and the sound was not very good... we had heard good ones so we knew something was not right... but there was not much we could do to get better sound from the 3 horns. 

There is a restoration service called The Horn Works who my son…


Clock ‘64 DeVille

Posted by Matt Vander Hooven on July 23, 2023 at 7:36pm 2 Comments

Is there still a member in the Detroit area that refurbishes clocks?

Matt VH

Spark Plug Heat Range

Posted by Patrick Westphal on July 7, 2023 at 10:00am 1 Comment

I found a diagram that illustrates the main factor in determining a spark plug heat range that I was trying to describe to you during the chapter get together.

Here it is:


The main factor is the length of the ceramic insulator from the middle of the spark plug to the tip (where the spark happens)  

The insulator…



  • Add Videos
  • View All

© 2024   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service