LS Fuel System Thoughts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Classic-Steele · 11-26-2013, 03:02 AM

Its looking like no better time to do the lq4 swap into the '72 c20, and I've been brainstorming. Planning on using the tank out of an 87 blazer, along with the sending unit and an Aeromotive pump and a Corvette filter/regulator. Have any of you guys put the newer blazer tank into a 67-72?

**truckdude239** · 11-26-2013, 04:38 AM

I used an 87 suburban tank with an ac delco ep381 pump

jorgensensc · 11-26-2013, 05:30 AM

I used an 87 blazer tank with a 1992-1995 s10 blazer 4.3 CPI sending unit with pump and a c5 regulator. Pump puts out 80 PSI stock. The tank cost me 78.00 new and the sending unit with pump cost me 85.00. With the c5 filter/regulator I had about 200.00 in the fuel tank system.

Billett · 11-26-2013, 11:29 AM

I used the stock tank...

solidaxel · 11-26-2013, 11:49 AM

For those using in tank fuel pumps which ones make the most "noise"!!

Wasted Income · 11-26-2013, 11:56 AM

91 Blazer Tank

Classic-Steele · 11-26-2013, 12:58 PM

Quote:

Originally Posted by Wasted Income

91 Blazer Tank

That tank looks right at home in there! Do you think it'd be hitting on the pumpkin if you were lowered?

Angryman117 · 11-26-2013, 01:26 PM

I am using a 89 blazer tank and replaced the TBI fuel pump with a new Airtex pump, is very quiet and can't hear it with the engine running. As for the corvett regulator, I did not need one. My 5.3 is a 2001 with the fuel regulator built into the fuel rails.

Wasted Income · 11-26-2013, 03:29 PM

Quote:

Originally Posted by Classic-Steele

That tank looks right at home in there! Do you think it'd be hitting on the pumpkin if you were lowered?

Where it is right now, yes, probably. You'd just need to shove that rear-most crossmember back. There's a good foot or so of room that you can slide it back yet.

Classic-Steele · 11-26-2013, 03:33 PM

Quote:

Originally Posted by Wasted Income

Where it is right now, yes, probably. You'd just need to shove that rear-most crossmember back. There's a good foot or so of room that you can slide it back yet.

Just got a 25 gal tank and sending unit ordered. Is yours a 25 gal?

Billett · 11-26-2013, 01:36 PM

I can't hear anything with the engine running, definitely not the fuel pump haha

Wasted Income · 11-26-2013, 04:28 PM

No it's 31

Classic-Steele · 11-27-2013, 01:46 AM

Looks like the 25 gal is the same dimensions, except for an inch shorter. Dropped the gun on the Aeromotive 340 as well! Should know how it looks in a few weeks.

**truckdude239** · 11-27-2013, 08:55 PM

heres my 87 suburban tank

Classic-Steele · 11-27-2013, 08:59 PM

Quote:

Originally Posted by truckdude239

heres my 87 suburban tank

Looks sweet! Did you go with braided hose and AN fittings right to the fuel rail?

Robznob11 · 11-28-2013, 02:16 AM

02 fbody tank here. gotta notch the bottom of the frame rails a bit and drill a hole through the frame for the filler but for 100$ bucks with pump salvage works like a champ and fuel pumps are cheap and easy to find if and when they go out.. update... you have to move the back brace rearward and remove the small brace that goes across the middle....

elf w/capital T · 10-26-2016, 07:41 PM

anyone use the lmc 21 gal or a burb 21 gal tank with an EFI or LS (255lph) setup? i can't see myself buying a 400 dollar kit when its just because I HATE THE SOUND OF AN INLINE PUMP....

BR3W CITY · 10-26-2016, 10:29 PM

If you can hear a 255 over your engine, then your engine isn't loud enough! Externally mounted, that inline isn't noisy at all. Its not like an a1000 which sounds like a damn winch motor.

Robznob11 · 10-26-2016, 11:26 PM

Just to update my 2013 post....the good thing about the fbody tank is that for less than 300 bucks you can get a racetronix 255lph upgrade with hot wire kit. Direct drop in and good for 600+ hp....I got my set up from lonies performance...!

elf w/capital T · 10-27-2016, 05:08 AM

Yeah i have some knock off flowmasters (temp) and at idle i hear that ugly a$$ whine... so ugly!

**michael bustamante** · 10-27-2016, 12:28 PM

any of you guys got pics of how the blazer tank looks installed? youre talking an 25 gallon k5 blazer tank right?

69gmcc10 · 10-27-2016, 02:53 PM

89 K5 Blazer tank mocked up. At the pinch weld around the tank I have it shimmed down 3" with a piece of 3"x 3" angle so the sending unit doesn't interfere with the bed cross-bracing and I had to move the rear crossmember back a good bit. The bottom of the receiver sits just lower than the tank and the filler spout should run between the frame and bed nicely.

It is not permanently installed yet so this is all I have for pictures now.

**michael bustamante** · 10-27-2016, 04:22 PM

yup thats what i needed thank you.
so you actually had mount mount the tank a little lower to be able to mount the bed?

69gmcc10 · 10-27-2016, 05:00 PM

Quote:

Originally Posted by michael bustamante

yup thats what i needed thank you.
so you actually had mount mount the tank a little lower to be able to mount the bed?

Because the sending unit is right on top of the tank and other design quirks, when installing the later blazer tank you have 2 options in order to make the tank fit. You either need to notch the bed support to almost nothing or lower the tank, I chose the latter. It seemed easier and placed the spout for the tank in an ideal location for routing without needing to cut notch the bed much.

Take a look at post 503 and later in this guys build. This is where I got the idea to install my tank from:
http://67-72chevytrucks.com/vboard/s...292529&page=21

69gmcc10 · 10-27-2016, 05:25 PM

For reference, here is a picture of a tank that was not lowered and what he needed to do to it to make the tank and sending unit work.

11-26-2013, 03:02 AM	#1
Classic-Steele Registered User Join Date: Oct 2013 Location: Westlock, Alberta Canada Posts: 82	LS Fuel System Thoughts Its looking like no better time to do the lq4 swap into the '72 c20, and I've been brainstorming. Planning on using the tank out of an 87 blazer, along with the sending unit and an Aeromotive pump and a Corvette filter/regulator. Have any of you guys put the newer blazer tank into a 67-72?

11-26-2013, 04:38 AM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: LS Fuel System Thoughts I used an 87 suburban tank with an ac delco ep381 pump __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

11-26-2013, 05:30 AM	#3
jorgensensc Registered User Join Date: Jul 2003 Location: Cypress, Tx Posts: 4,005	Re: LS Fuel System Thoughts I used an 87 blazer tank with a 1992-1995 s10 blazer 4.3 CPI sending unit with pump and a c5 regulator. Pump puts out 80 PSI stock. The tank cost me 78.00 new and the sending unit with pump cost me 85.00. With the c5 filter/regulator I had about 200.00 in the fuel tank system. __________________ 1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE

11-26-2013, 11:29 AM	#4
Billett Registered User Join Date: Jun 2012 Location: Pittsgrove, NJ Posts: 1,502	Re: LS Fuel System Thoughts I used the stock tank... __________________ Will 1968 C10 - Project Texa Go 6.0/4L80e 2003 Mitsubishi Lancer Evolution 2002 Ford Excursion 7.3L 2024 Toyota Sienna

11-26-2013, 11:49 AM	#5
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: LS Fuel System Thoughts For those using in tank fuel pumps which ones make the most "noise"!! __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

11-26-2013, 11:56 AM	#6
Wasted Income Boosted Member Join Date: May 2002 Location: Mackinaw, IL Posts: 2,200	Re: LS Fuel System Thoughts 91 Blazer Tank __________________ 1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards *TURBO ALL THE THINGS!!*

11-26-2013, 01:26 PM	#8
Angryman117 Registered User Join Date: Jul 2013 Location: VAFB, CA Posts: 227	Re: LS Fuel System Thoughts I am using a 89 blazer tank and replaced the TBI fuel pump with a new Airtex pump, is very quiet and can't hear it with the engine running. As for the corvett regulator, I did not need one. My 5.3 is a 2001 with the fuel regulator built into the fuel rails. __________________ Angryman117's 47 Chevy Build 89 Silverado Z71 LS Swap (sold)

11-26-2013, 01:36 PM	#11
Billett Registered User Join Date: Jun 2012 Location: Pittsgrove, NJ Posts: 1,502	Re: LS Fuel System Thoughts I can't hear anything with the engine running, definitely not the fuel pump haha __________________ Will 1968 C10 - Project Texa Go 6.0/4L80e 2003 Mitsubishi Lancer Evolution 2002 Ford Excursion 7.3L 2024 Toyota Sienna

11-26-2013, 04:28 PM	#12
Wasted Income Boosted Member Join Date: May 2002 Location: Mackinaw, IL Posts: 2,200	Re: LS Fuel System Thoughts No it's 31 __________________ 1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards *TURBO ALL THE THINGS!!*

11-27-2013, 01:46 AM	#13
Classic-Steele Registered User Join Date: Oct 2013 Location: Westlock, Alberta Canada Posts: 82	Re: LS Fuel System Thoughts Looks like the 25 gal is the same dimensions, except for an inch shorter. Dropped the gun on the Aeromotive 340 as well! Should know how it looks in a few weeks.

11-27-2013, 08:55 PM	#14
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: LS Fuel System Thoughts heres my 87 suburban tank Attached Images __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

11-28-2013, 02:16 AM	#16
Robznob11 Registered User Join Date: Feb 2004 Location: brownfield texas (west texas) Posts: 1,936	Re: LS Fuel System Thoughts 02 fbody tank here. gotta notch the bottom of the frame rails a bit and drill a hole through the frame for the filler but for 100$ bucks with pump salvage works like a champ and fuel pumps are cheap and easy to find if and when they go out.. update... you have to move the back brace rearward and remove the small brace that goes across the middle.... Attached Images __________________ The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS

10-26-2016, 07:41 PM	#17
elf w/capital T Registered User Join Date: Feb 2011 Location: North Carolina Posts: 994	Re: LS Fuel System Thoughts anyone use the lmc 21 gal or a burb 21 gal tank with an EFI or LS (255lph) setup? i can't see myself buying a 400 dollar kit when its just because I HATE THE SOUND OF AN INLINE PUMP....

10-26-2016, 10:29 PM	#18
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: LS Fuel System Thoughts If you can hear a 255 over your engine, then your engine isn't loud enough! Externally mounted, that inline isn't noisy at all. Its not like an a1000 which sounds like a damn winch motor. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

10-26-2016, 11:26 PM	#19
Robznob11 Registered User Join Date: Feb 2004 Location: brownfield texas (west texas) Posts: 1,936	Re: LS Fuel System Thoughts Just to update my 2013 post....the good thing about the fbody tank is that for less than 300 bucks you can get a racetronix 255lph upgrade with hot wire kit. Direct drop in and good for 600+ hp....I got my set up from lonies performance...! __________________ The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS



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10-27-2016, 05:08 AM	#20
elf w/capital T Registered User Join Date: Feb 2011 Location: North Carolina Posts: 994	Re: LS Fuel System Thoughts Yeah i have some knock off flowmasters (temp) and at idle i hear that ugly a$$ whine... so ugly!

10-27-2016, 12:28 PM	#21
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,862	Re: LS Fuel System Thoughts any of you guys got pics of how the blazer tank looks installed? youre talking an 25 gallon k5 blazer tank right? __________________ 1967custom

10-27-2016, 02:53 PM	#22
69gmcc10 Registered User Join Date: May 2011 Location: Missoula, MT Posts: 934	Re: LS Fuel System Thoughts 89 K5 Blazer tank mocked up. At the pinch weld around the tank I have it shimmed down 3" with a piece of 3"x 3" angle so the sending unit doesn't interfere with the bed cross-bracing and I had to move the rear crossmember back a good bit. The bottom of the receiver sits just lower than the tank and the filler spout should run between the frame and bed nicely. It is not permanently installed yet so this is all I have for pictures now. Attached Images __________________ 69 GMC C10 build thread- http://67-72chevytrucks.com/vboard/s...d.php?t=501676 03 Silverado build thread-http://67-72chevytrucks.com/vboard/s...d.php?t=591582

10-27-2016, 04:22 PM	#23
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,862	Re: LS Fuel System Thoughts yup thats what i needed thank you. so you actually had mount mount the tank a little lower to be able to mount the bed? __________________ 1967custom

10-27-2016, 05:25 PM	#25
69gmcc10 Registered User Join Date: May 2011 Location: Missoula, MT Posts: 934	Re: LS Fuel System Thoughts For reference, here is a picture of a tank that was not lowered and what he needed to do to it to make the tank and sending unit work. Attached Images __________________ 69 GMC C10 build thread- http://67-72chevytrucks.com/vboard/s...d.php?t=501676 03 Silverado build thread-http://67-72chevytrucks.com/vboard/s...d.php?t=591582

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