Smaller mechanical fuel pump
Thread Starter
Instructor
Joined: Jan 2010
Posts: 129
Likes: 4
From: Perth western Australia
Smaller mechanical fuel pump
I currently have mechanical fuel pump on my 350 in the 73, as Im in Austarlia it has been converted to Right Hand Drive.
The fuel pump is actually hitting on the aftermarket engine mount and I need to get clearance.
First option is to try and rework the mount bracket and get the clearance or the second option is to get a smaller fuel pump.
The current fuel pump is about 93mm across.
Does anyone know of a smaller mechanical pump as this would be the easiest fix and would be easier to replace now as the motor is out.
The fuel pump is actually hitting on the aftermarket engine mount and I need to get clearance.
First option is to try and rework the mount bracket and get the clearance or the second option is to get a smaller fuel pump.
The current fuel pump is about 93mm across.
Does anyone know of a smaller mechanical pump as this would be the easiest fix and would be easier to replace now as the motor is out.
Race Director
Joined: Jul 2004
Posts: 12,705
Likes: 329
From: Scottsdale Arizona
The Holley high performance one is definately shorter but I doubt that the diameter is any smaller. No return line either. You might be better off converting to an electric pump and just putting in a regulator.
Given the effort required. I’d think modifying the engine mount would be easier.
Given the effort required. I’d think modifying the engine mount would be easier.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
These looked promising but there were way too many failures ... now long gone.
https://www.hemmings.com/blog/2007/0...cal-fuel-pump/
? maybe re-engineered by another maker & similar is avaiilable ... don't know?
? what are other aussies with RHD C3 doing? Electric pump?
https://www.hemmings.com/blog/2007/0...cal-fuel-pump/
? maybe re-engineered by another maker & similar is avaiilable ... don't know?
? what are other aussies with RHD C3 doing? Electric pump?
Race Director
Joined: Mar 2016
Posts: 14,402
Likes: 8,209
From: Napa Valley California
My 73 big block did not come from the factory with a return line from the carb or the fuel pump.
Not sure if the small blocks did.
If there is a clearance issue, you might look at other motor mounts if the brand you are using has a clearance issue.
With the engine out it would be the time to do it.
Other than that the option of installing an electric fuel pump would work with a pressure regulator so you can set the proper fuel pressure at the carb.
Not sure if the small blocks did.
If there is a clearance issue, you might look at other motor mounts if the brand you are using has a clearance issue.
With the engine out it would be the time to do it.
Other than that the option of installing an electric fuel pump would work with a pressure regulator so you can set the proper fuel pressure at the carb.
Melting Slicks
Joined: Jul 2010
Posts: 3,176
Likes: 633
From: perth western australia
Another dodgy back yard conversion ? Do you have the engineering papers for the work ?
How about a close up picture of the job ?
How about a close up picture of the job ?
Last edited by bazza77; Jun 29, 2019 at 08:32 PM.
