Which fuel pump?
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
Which fuel pump?
My fuel pump just went and I'm preparing to replace it. It's a 2005 LS2 MT car.
Several people have told me to upgrade to the Z06 pump, but Rockauto shows the part numbers to be the same:
AC Delco MU10059 (19149687) w/o sender
AC Delco MU1889 (19207959) with sender
I checked 2005 base Corvette and 2007 Z06. I checked 2009 Z06 as well to see if this was changed in recent years. All the same. What am I missing?
Is there another option I should consider? This will be converted to a race car soon and I don't want to go through this mess again later if the Z06 pump is inadequate.
Thanks!
Several people have told me to upgrade to the Z06 pump, but Rockauto shows the part numbers to be the same:
AC Delco MU10059 (19149687) w/o sender
AC Delco MU1889 (19207959) with sender
I checked 2005 base Corvette and 2007 Z06. I checked 2009 Z06 as well to see if this was changed in recent years. All the same. What am I missing?
Is there another option I should consider? This will be converted to a race car soon and I don't want to go through this mess again later if the Z06 pump is inadequate.
Thanks!
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
My fuel pump just went and I'm preparing to replace it. It's a 2005 LS2 MT car.
Several people have told me to upgrade to the Z06 pump, but Rockauto shows the part numbers to be the same:
AC Delco MU10059 (19149687) w/o sender
AC Delco MU1889 (19207959) with sender
I checked 2005 base Corvette and 2007 Z06. I checked 2009 Z06 as well to see if this was changed in recent years. All the same. What am I missing?
Is there another option I should consider? This will be converted to a race car soon and I don't want to go through this mess again later if the Z06 pump is inadequate.
Thanks!
Several people have told me to upgrade to the Z06 pump, but Rockauto shows the part numbers to be the same:
AC Delco MU10059 (19149687) w/o sender
AC Delco MU1889 (19207959) with sender
I checked 2005 base Corvette and 2007 Z06. I checked 2009 Z06 as well to see if this was changed in recent years. All the same. What am I missing?
Is there another option I should consider? This will be converted to a race car soon and I don't want to go through this mess again later if the Z06 pump is inadequate.
Thanks!
Last edited by Motorhead-47; Jul 25, 2011 at 06:40 AM.
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
So "upgrading" to the Z06 pump is a myth? That makes it easier...but more expensive. So if I get a walbro pump will it fit into stock sender assembly, or is that why everyone changes that part as well?
Thanks, Motorhead. I'll be using your "how-to" guide as well.
Thanks, Motorhead. I'll be using your "how-to" guide as well.
Safety Car
Joined: Jul 2009
Posts: 3,755
Likes: 190
From: Baton Rouge LA
St. Jude Donor '14, '16
You will infact be putting in a more powerful pump when you do the swap. Also it is probably in your best interest to go ahead and change the sending unit while you're in there. You don't want to have to go back in like I had to do.
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
Why not replace the pump only? You can get a Walbro 255 lph and install kit for about $110 from Hinson. It will save you a couple hundred dollars. Two wire splices, slight mod on the canister and a new hose at the discharge of the pump is about all you need to make it work.
Last edited by taken19; Jul 25, 2011 at 09:24 AM.
Safety Car
Joined: Jun 2002
Posts: 4,730
Likes: 32
From: Northern VA
Cruise-In 7-8-9-10-11-12 Veteran
Wounded Warrior Escort '11
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12
Well, GM Partshouse shows two different prices and (I presume based upon pricing) two different pumps (one for a 6.0/6.2 and the other for a 7.0Liter). I presume that the 7.0L is for the Z-06 as I checked model years for 2005/2006/2009.
What it doesn't say is if either pump price includes the sender. Guess I'll have to call to find out.
What it doesn't say is if either pump price includes the sender. Guess I'll have to call to find out.
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
Cripes, I have a Chevy truck pump in the race car...and I have a Walbro 255 lph pump that I took out of it. Although it seems kinda dumb to install a used pump as much of a PITA as this job is.
And as Sevinn says, the senders go bad so I want to replace that too. Now I need to find the sender seperate.
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Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
I just put in a Walbro 255. Saved the canister but drilled holed in the bottom inch or two because the Walbro doesn't have the aux discharge pipe that feeds the can. Eboggs has a pretty good thread on the mod he did to the can. AlsO, there's only one type of rubber fuel line that can be placed inside the tank. It's made by gates but don't remember the part number - somebody may be able to chime in. It costs about $25 for a foot of it though. Ouch!
Run a search and you will find all the info you need.
Run a search and you will find all the info you need.
Pro
Joined: Dec 2009
Posts: 648
Likes: 0
From: Kalamazoo MI
Yes, the pump housing swells and you have to enlarge the opening, there is noting wrong with replacing the inners and reinstalling the casing again, replacing just the defective part gives you a good saving.
Safety Car
Joined: Jul 2009
Posts: 3,755
Likes: 190
From: Baton Rouge LA
St. Jude Donor '14, '16
YES! That's the answer I was looking for. I couldn't figure out why people weren't replacing the pump only and doing the whole assembly. I was assuming that you could not salvage the plastic parts (looks like they swell, etc).
Cripes, I have a Chevy truck pump in the race car...and I have a Walbro 255 lph pump that I took out of it. Although it seems kinda dumb to install a used pump as much of a PITA as this job is.
And as Sevinn says, the senders go bad so I want to replace that too. Now I need to find the sender seperate.
Cripes, I have a Chevy truck pump in the race car...and I have a Walbro 255 lph pump that I took out of it. Although it seems kinda dumb to install a used pump as much of a PITA as this job is.
And as Sevinn says, the senders go bad so I want to replace that too. Now I need to find the sender seperate.
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
Looks like I have what I need to upgrade. Courtesy of you guys (and midnightmagnumcorp from another thread) here is the parts list:
Walbro 255 # GSS340M with socks
12" 5/16 Gates Submersible Fuel Line Hose # 27093 5/16
SS 5/16 slotless hose clamps
Delco PN: 88967316 fuel level sending unit
Should be about $183 for everything vs $404 for the Z06 replacement.
taken, did you use the Walbro or the Aeromotive? I found your old thread, too. Good info out there!
Walbro 255 # GSS340M with socks
12" 5/16 Gates Submersible Fuel Line Hose # 27093 5/16
SS 5/16 slotless hose clamps
Delco PN: 88967316 fuel level sending unit
Should be about $183 for everything vs $404 for the Z06 replacement.
taken, did you use the Walbro or the Aeromotive? I found your old thread, too. Good info out there!
Last edited by ScaryFast; Jul 26, 2011 at 06:20 PM.
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
I went with the Walbro 255 - tried and true. I couldn't find enough data points on the aero to gamble with it. I'm sure it's a quality pump that works well but I was pretty much guaranteed that the Walbro would work well for me.
If your fuel sending unit is working now why are you replacing it? I didn't replace mine and it still works after the install. Granted, it was a PITA to hook back up, but tying a piece of string before dropping the can back in helped a lot. I did wipe down the unit with rubbing alcohol to clean any potential varnish off. No issues yet so I think I'm inthe clear.
If your fuel sending unit is working now why are you replacing it? I didn't replace mine and it still works after the install. Granted, it was a PITA to hook back up, but tying a piece of string before dropping the can back in helped a lot. I did wipe down the unit with rubbing alcohol to clean any potential varnish off. No issues yet so I think I'm inthe clear.
Melting Slicks
Joined: Aug 2004
Posts: 2,855
Likes: 209
From: Oakbank Manitoba
Here is the correct fuel pump to purchase if you want to just purchase the pump only.
http://www.racetronix.biz/itemdesc.a...%2D006&eq=&Tp=
The reason for using this pump is due to the fact this Walbro pump is modified to include the venturi nipple. If you buy a pump without the venturi nipple then the bucket has to be modified on the bottom with a hole. Read the following link for a great explanation why you shouldn't buy a replacement pump without the venturi nipple. http://www.racetronix.biz/itemdesc.a...%2D001&eq=&Tp= This explanation is for a Camaro/Firebird fuel bucket assembly but the operating principal is the same for the C6 Corvette.
http://www.racetronix.biz/itemdesc.a...%2D006&eq=&Tp=
The reason for using this pump is due to the fact this Walbro pump is modified to include the venturi nipple. If you buy a pump without the venturi nipple then the bucket has to be modified on the bottom with a hole. Read the following link for a great explanation why you shouldn't buy a replacement pump without the venturi nipple. http://www.racetronix.biz/itemdesc.a...%2D001&eq=&Tp= This explanation is for a Camaro/Firebird fuel bucket assembly but the operating principal is the same for the C6 Corvette.
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
Here is the correct fuel pump to purchase if you want to just purchase the pump only.
http://www.racetronix.biz/itemdesc.a...%2D006&eq=&Tp=
The reason for using this pump is due to the fact this Walbro pump is modified to include the venturi nipple. If you buy a pump without the venturi nipple then the bucket has to be modified on the bottom with a hole. Read the following link for a great explanation why you shouldn't buy a replacement pump without the venturi nipple. http://www.racetronix.biz/itemdesc.a...%2D001&eq=&Tp= This explanation is for a Camaro/Firebird fuel bucket assembly but the operating principal is the same for the C6 Corvette.
http://www.racetronix.biz/itemdesc.a...%2D006&eq=&Tp=
The reason for using this pump is due to the fact this Walbro pump is modified to include the venturi nipple. If you buy a pump without the venturi nipple then the bucket has to be modified on the bottom with a hole. Read the following link for a great explanation why you shouldn't buy a replacement pump without the venturi nipple. http://www.racetronix.biz/itemdesc.a...%2D001&eq=&Tp= This explanation is for a Camaro/Firebird fuel bucket assembly but the operating principal is the same for the C6 Corvette.
What is this pump rated for, 255 lph?
Race Director
Joined: Nov 2005
Posts: 14,544
Likes: 1,531
From: Supporting the Corvette Community at Abel Chevrolet in Rio Vista, CA 707-374-6317 Ext.123
St. Jude Donor '08
I sell the GM Z06 fuel pump all the time for those that want to upgrade their 2004 and up Corvette to the LS7 pump. The correct part number is 19149687 and they run about $325 shipped.
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
heh. No phone number. Email sent.
Richie, thanks for the offer, I'm probably going to try the FPA-006 pump.
taken, I've heard the senders go bad, simply a "while I'm in there" preventative maintenance thing since the job is such a PITA. My car has 75k on the odometer, failure may be impending.
Last edited by ScaryFast; Jul 28, 2011 at 07:42 AM.
Melting Slicks
Joined: Aug 2004
Posts: 2,855
Likes: 209
From: Oakbank Manitoba
The F56 is the correct Racetronix fuel pump for the C6. This was pointed out in the first link I provided.
The buckets are very different between the Corvette and the Camaro/Firebird. The principal as to how they are kept full of fuel via the venturi nipple on the actual pump is the same. If you install a pump without the venturi nipple then you are forced to drill holes in the bottom of the bucket to allow fuel to fill the bucket. Now the bucket will only stay as full as the actual level in the tank. With the venturi nipple type of fuel pump as long as there is approx 1/4 inch of fuel in the bottom of the tank the bucket will remain full.
The buckets are very different between the Corvette and the Camaro/Firebird. The principal as to how they are kept full of fuel via the venturi nipple on the actual pump is the same. If you install a pump without the venturi nipple then you are forced to drill holes in the bottom of the bucket to allow fuel to fill the bucket. Now the bucket will only stay as full as the actual level in the tank. With the venturi nipple type of fuel pump as long as there is approx 1/4 inch of fuel in the bottom of the tank the bucket will remain full.
Last edited by KENS80V; Jul 27, 2011 at 06:06 PM.
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
I'm not sure how I misread that. You're right. Here's the response from Racetronix saying exactly what you just told me twice, and basically calling me an idiot, which I suppose is deserved...
Your C6 module can only use the http://www.racetronix.biz/itemdesc.a...PA-006&eq=&Tp=
It comes with a new fuel tube only.
This is meant as a dealer item for people who have experience with this fuel system.
No instructions are included.
Your C6 module can only use the http://www.racetronix.biz/itemdesc.a...PA-006&eq=&Tp=
It comes with a new fuel tube only.
This is meant as a dealer item for people who have experience with this fuel system.
No instructions are included.
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
Here we go again. Fuel pump is dead. This is ridiculous, are ALL C6's like this or is this a 2005 thing?
Aside from headers, this car is bone stock. Maybe has 15k miles since the last pump replacement.
Aside from headers, this car is bone stock. Maybe has 15k miles since the last pump replacement.