Fuel Pump
Registered User
Joined: Aug 2000
Posts: 4,305
From: North Vancouver, BC
Thunderacing has the racetronix pump assembly for our cars, its $235 after their $5 coupon you get after you complete the order 
lol, just got mine today its beautiful, everything you need is there, separate wiring harness to get voltage from the alternator instead of the system, everything & I mean everything you need & more, even upgrades your batter terminal ground etc.. comes with all tie wraps you need, all plug & play wiring harness & pump fits into the stock fuel bucket, has improved guage wire harness on pump aswell to replace the stock harness, all the for $235 I coulnd't belive my eyes, you can see it at.
www.racetronix.com go to the LT1 f-body kits, man its awesome!
lol, just got mine today its beautiful, everything you need is there, separate wiring harness to get voltage from the alternator instead of the system, everything & I mean everything you need & more, even upgrades your batter terminal ground etc.. comes with all tie wraps you need, all plug & play wiring harness & pump fits into the stock fuel bucket, has improved guage wire harness on pump aswell to replace the stock harness, all the for $235 I coulnd't belive my eyes, you can see it at.www.racetronix.com go to the LT1 f-body kits, man its awesome!
Guest
Posts: n/a
I don't think that I would buy stock. I would buy either the Racetronix listed above or buy a Walbro or Granatelli. I have heard that Walbro makes the pumps for GMS. I bought my GMS I think for about $130.00. If you price a stock pump you will be shocked at the price. I have a fiend that him and his dad run a mechanics shop and they replace all the f-body fuel pumps with a GMS because they are so much cheaper than a stock GM replacement. Besides, if you are going to do it, just do it once. If you do mods later, you won't have to worry about the pump.
Registered User
Joined: Oct 2001
Posts: 784
Originally posted by rskrause
The OEM pump is perfectly fine for a stock or mildly modded car. It's quiet and reliable and cheap (from the right source). Get an OEM pump.
Rich Krause
The OEM pump is perfectly fine for a stock or mildly modded car. It's quiet and reliable and cheap (from the right source). Get an OEM pump.
Rich Krause
How would this differ from a Walbro pump apart from more HP support?
Registered User
Joined: Dec 2001
Posts: 726
From: Glendale, AZ
Originally posted by Racetronix
How would this differ from a Walbro pump apart from more HP support?
How would this differ from a Walbro pump apart from more HP support?
Once again:
Racetronix- Have a few more $, better than stock, allows the ability for high HP applications
GM Replacement- Cheap, good for mild bolt-ons.
You guys ****ing rock and in no way ccould I ever bash such a great product.
Registered User
Joined: Oct 2001
Posts: 784
Originally posted by madhatter
Cheaper. At the price that most people on the board can get the pump from GM for (about $150 complete), It is cheaper than your product. Your pumps are awesome and extremely well engineered, but for people on a budget or who want to stay stockish, it is the better choice.
Cheaper. At the price that most people on the board can get the pump from GM for (about $150 complete), It is cheaper than your product. Your pumps are awesome and extremely well engineered, but for people on a budget or who want to stay stockish, it is the better choice.
For those of you who have missed the call and keep touting a standard off-the-shelf $100.00 Walbro pump please review this information which has been posted many times on this forum:
The LT1 F-body cars have a pump that is inside a plastic bucket. This bucket in combination with the fuel pump in it is designed to draw fuel from the bottom of the tank via suction. This keeps the bucket full at all times so that when the tank is low on gas and you are doing some hard cornering or acceleration the pump does not run dry and start aerating the fuel. This happens as the fuel sloshes from side to side in the tank leaving the center low on fuel. This can cause detonation and possible engine damage. The bucket also allows the car to operate with lower fuel levels in the tank due to its scavenging effect. The bucket can also effect motor cranking time as the priming time is reduced under certain conditions. The return line from the fuel pressure regulator is diverted back into the bucket via a filter sock inside so that the unused fuel also helps keep the bucket full at all times. Keeping the pump constantly immersed in gas within the bucket can extend the pump’s life by not allowing it to be exposed to open air. Open air within the tank contains moisture and in time will cause the pump to rust / seize up especially if left to sit for long periods of time without the tank topped-up (i.e. winter storage). The Racetronix pump assembly is modified so that it will seal in the bucket’s rubber check-valve so that its function is retained. The Racetronix pump assembly is fitted with a factory style fuel tube not a rubber hose. This hose is important as when the fuel module is placed back in the tank it must pivot which can cause the rubber hose to kink. This fuel tube is much more resistant to the solvents in today’s gas and it will not crack, split, swell and collapse like a rubber hose. The standard Walbro kit comes with a short length of 50PSIA rated rubber hose. The Racetronix fuel module is equipped with a one-piece soldered wiring harness made from mil spec. Teflon/silver wire. This is the same type of wire used at the factory as Teflon is the most resistant to deterioration when exposed to gas. This harness has a Walbro connector at one end and GM pins at the other which fit directly inside the factory connector. Due to the age of the F-LT1 cars much of the in-tank connectors are black / corroded due to age. The Racetronix harness replaces all these questionable components. The standard Walbro kit comes with a plastic coated in-line wiring adapter. This adapter must plug into the existing questionable factory in-tank wiring thereby adding additional connections and length.
If the bucket’s function or any of the other kit’s features are not important to you then a standard GSS307 or GSS340 255L/Hr pump can be retrofit onto the F-LT1 module. The Racetronix kit is not required to get an F-LT1 system running but rather as a better option in order to retain factory functionality and maximize pump performance.
Jack
Racetronix
Registered User
Joined: Apr 2001
Posts: 971
From: Colorado
Originally posted by Racetronix
Our fuel pump assemblies alone are $149.99 (w/o HW harness) everyday so how is the GM unit cheaper? We include upgraded wiring and a superior filter sock along with the 255L/Hr pump so the pump assembly is better than GM's replacement. When you buy the GM unit you are paying for a bunch or redundant plastic and a lesser pump.
For those of you who have missed the call and keep touting a standard off-the-shelf $100.00 Walbro pump please review this information which has been posted many times on this forum:
The LT1 F-body cars have a pump that is inside a plastic bucket. This bucket in combination with the fuel pump in it is designed to draw fuel from the bottom of the tank via suction. This keeps the bucket full at all times so that when the tank is low on gas and you are doing some hard cornering or acceleration the pump does not run dry and start aerating the fuel. This happens as the fuel sloshes from side to side in the tank leaving the center low on fuel. This can cause detonation and possible engine damage. The bucket also allows the car to operate with lower fuel levels in the tank due to its scavenging effect. The bucket can also effect motor cranking time as the priming time is reduced under certain conditions. The return line from the fuel pressure regulator is diverted back into the bucket via a filter sock inside so that the unused fuel also helps keep the bucket full at all times. Keeping the pump constantly immersed in gas within the bucket can extend the pump’s life by not allowing it to be exposed to open air. Open air within the tank contains moisture and in time will cause the pump to rust / seize up especially if left to sit for long periods of time without the tank topped-up (i.e. winter storage). The Racetronix pump assembly is modified so that it will seal in the bucket’s rubber check-valve so that its function is retained. The Racetronix pump assembly is fitted with a factory style fuel tube not a rubber hose. This hose is important as when the fuel module is placed back in the tank it must pivot which can cause the rubber hose to kink. This fuel tube is much more resistant to the solvents in today’s gas and it will not crack, split, swell and collapse like a rubber hose. The standard Walbro kit comes with a short length of 50PSIA rated rubber hose. The Racetronix fuel module is equipped with a one-piece soldered wiring harness made from mil spec. Teflon/silver wire. This is the same type of wire used at the factory as Teflon is the most resistant to deterioration when exposed to gas. This harness has a Walbro connector at one end and GM pins at the other which fit directly inside the factory connector. Due to the age of the F-LT1 cars much of the in-tank connectors are black / corroded due to age. The Racetronix harness replaces all these questionable components. The standard Walbro kit comes with a plastic coated in-line wiring adapter. This adapter must plug into the existing questionable factory in-tank wiring thereby adding additional connections and length.
If the bucket’s function or any of the other kit’s features are not important to you then a standard GSS307 or GSS340 255L/Hr pump can be retrofit onto the F-LT1 module. The Racetronix kit is not required to get an F-LT1 system running but rather as a better option in order to retain factory functionality and maximize pump performance.
Jack
Racetronix
Our fuel pump assemblies alone are $149.99 (w/o HW harness) everyday so how is the GM unit cheaper? We include upgraded wiring and a superior filter sock along with the 255L/Hr pump so the pump assembly is better than GM's replacement. When you buy the GM unit you are paying for a bunch or redundant plastic and a lesser pump.
For those of you who have missed the call and keep touting a standard off-the-shelf $100.00 Walbro pump please review this information which has been posted many times on this forum:
The LT1 F-body cars have a pump that is inside a plastic bucket. This bucket in combination with the fuel pump in it is designed to draw fuel from the bottom of the tank via suction. This keeps the bucket full at all times so that when the tank is low on gas and you are doing some hard cornering or acceleration the pump does not run dry and start aerating the fuel. This happens as the fuel sloshes from side to side in the tank leaving the center low on fuel. This can cause detonation and possible engine damage. The bucket also allows the car to operate with lower fuel levels in the tank due to its scavenging effect. The bucket can also effect motor cranking time as the priming time is reduced under certain conditions. The return line from the fuel pressure regulator is diverted back into the bucket via a filter sock inside so that the unused fuel also helps keep the bucket full at all times. Keeping the pump constantly immersed in gas within the bucket can extend the pump’s life by not allowing it to be exposed to open air. Open air within the tank contains moisture and in time will cause the pump to rust / seize up especially if left to sit for long periods of time without the tank topped-up (i.e. winter storage). The Racetronix pump assembly is modified so that it will seal in the bucket’s rubber check-valve so that its function is retained. The Racetronix pump assembly is fitted with a factory style fuel tube not a rubber hose. This hose is important as when the fuel module is placed back in the tank it must pivot which can cause the rubber hose to kink. This fuel tube is much more resistant to the solvents in today’s gas and it will not crack, split, swell and collapse like a rubber hose. The standard Walbro kit comes with a short length of 50PSIA rated rubber hose. The Racetronix fuel module is equipped with a one-piece soldered wiring harness made from mil spec. Teflon/silver wire. This is the same type of wire used at the factory as Teflon is the most resistant to deterioration when exposed to gas. This harness has a Walbro connector at one end and GM pins at the other which fit directly inside the factory connector. Due to the age of the F-LT1 cars much of the in-tank connectors are black / corroded due to age. The Racetronix harness replaces all these questionable components. The standard Walbro kit comes with a plastic coated in-line wiring adapter. This adapter must plug into the existing questionable factory in-tank wiring thereby adding additional connections and length.
If the bucket’s function or any of the other kit’s features are not important to you then a standard GSS307 or GSS340 255L/Hr pump can be retrofit onto the F-LT1 module. The Racetronix kit is not required to get an F-LT1 system running but rather as a better option in order to retain factory functionality and maximize pump performance.
Jack
Racetronix
Registered User
Joined: Dec 1969
Posts: 27,725
From: Little Rock, AR
Originally posted by 5.0THIS
Never seen an LT1 f body pump out of the tank before, but I thought only the newer LS1 cars had the plastic "bucket" around the fuel pump to keep fuel near it. Does my 95 have it as well?
Never seen an LT1 f body pump out of the tank before, but I thought only the newer LS1 cars had the plastic "bucket" around the fuel pump to keep fuel near it. Does my 95 have it as well?
Registered User
Joined: Sep 2003
Posts: 627
From: Edmonton, AB, Canada
Im assuming this is less complete than the racetronix kit, does anybody know how so?
http://www.autoperformanceengineerin...l/lt1_kit.html
http://www.autoperformanceengineerin...l/lt1_kit.html