The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-26-2013, 03:02 AM   #1
Classic-Steele
Registered User
 
Classic-Steele's Avatar
 
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?
Classic-Steele is offline   Reply With Quote
Old 11-26-2013, 04:38 AM   #2
truckdude239
Senior Member
 
truckdude239's Avatar
 
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
truckdude239 is offline   Reply With Quote
Old 11-26-2013, 05:30 AM   #3
jorgensensc
Registered User
 
jorgensensc's Avatar
 
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
jorgensensc is offline   Reply With Quote
Old 11-26-2013, 11:29 AM   #4
Billett
Registered User
 
Billett's Avatar
 
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
Billett is offline   Reply With Quote
Old 11-26-2013, 11:49 AM   #5
solidaxel
Registered User
 
solidaxel's Avatar
 
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
solidaxel is offline   Reply With Quote
Old 11-26-2013, 11:56 AM   #6
Wasted Income
Boosted Member
 
Wasted Income's Avatar
 
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!!
Wasted Income is offline   Reply With Quote
Old 11-26-2013, 12:58 PM   #7
Classic-Steele
Registered User
 
Classic-Steele's Avatar
 
Join Date: Oct 2013
Location: Westlock, Alberta Canada
Posts: 82
Re: LS Fuel System Thoughts

Quote:
Originally Posted by Wasted Income View Post
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?
Classic-Steele is offline   Reply With Quote
Old 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)
Angryman117 is offline   Reply With Quote
Old 11-26-2013, 01:36 PM   #9
Billett
Registered User
 
Billett's Avatar
 
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
Billett is offline   Reply With Quote
Old 11-26-2013, 03:29 PM   #10
Wasted Income
Boosted Member
 
Wasted Income's Avatar
 
Join Date: May 2002
Location: Mackinaw, IL
Posts: 2,200
Re: LS Fuel System Thoughts

Quote:
Originally Posted by Classic-Steele View Post
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.
__________________
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!!
Wasted Income is offline   Reply With Quote
Old 11-26-2013, 03:33 PM   #11
Classic-Steele
Registered User
 
Classic-Steele's Avatar
 
Join Date: Oct 2013
Location: Westlock, Alberta Canada
Posts: 82
Re: LS Fuel System Thoughts

Quote:
Originally Posted by Wasted Income View Post
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?
Classic-Steele is offline   Reply With Quote
Old 11-26-2013, 04:28 PM   #12
Wasted Income
Boosted Member
 
Wasted Income's Avatar
 
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!!
Wasted Income is offline   Reply With Quote
Old 11-27-2013, 01:46 AM   #13
Classic-Steele
Registered User
 
Classic-Steele's Avatar
 
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.
Classic-Steele is offline   Reply With Quote
Old 11-27-2013, 08:55 PM   #14
truckdude239
Senior Member
 
truckdude239's Avatar
 
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
truckdude239 is offline   Reply With Quote
Old 11-27-2013, 08:59 PM   #15
Classic-Steele
Registered User
 
Classic-Steele's Avatar
 
Join Date: Oct 2013
Location: Westlock, Alberta Canada
Posts: 82
Re: LS Fuel System Thoughts

Quote:
Originally Posted by truckdude239 View Post
heres my 87 suburban tank
Looks sweet! Did you go with braided hose and AN fittings right to the fuel rail?
Classic-Steele is offline   Reply With Quote
Old 11-28-2013, 02:16 AM   #16
Robznob11
Registered User
 
Robznob11's Avatar
 
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
Robznob11 is offline   Reply With Quote
Old 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....
elf w/capital T is offline   Reply With Quote
Old 10-26-2016, 10:29 PM   #18
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
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
BR3W CITY is offline   Reply With Quote
Old 10-26-2016, 11:26 PM   #19
Robznob11
Registered User
 
Robznob11's Avatar
 
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
Robznob11 is offline   Reply With Quote
Old 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!
elf w/capital T is offline   Reply With Quote
Old 10-27-2016, 12:28 PM   #21
michael bustamante
Senior Member
 
michael bustamante's Avatar
 
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
michael bustamante is offline   Reply With Quote
Old 10-27-2016, 02:53 PM   #22
69gmcc10
Registered User
 
69gmcc10's Avatar
 
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
69gmcc10 is offline   Reply With Quote
Old 10-27-2016, 04:22 PM   #23
michael bustamante
Senior Member
 
michael bustamante's Avatar
 
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
michael bustamante is offline   Reply With Quote
Old 10-27-2016, 05:00 PM   #24
69gmcc10
Registered User
 
69gmcc10's Avatar
 
Join Date: May 2011
Location: Missoula, MT
Posts: 934
Re: LS Fuel System Thoughts

Quote:
Originally Posted by michael bustamante View Post
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
__________________
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
69gmcc10 is offline   Reply With Quote
Old 10-27-2016, 05:25 PM   #25
69gmcc10
Registered User
 
69gmcc10's Avatar
 
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
69gmcc10 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:41 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com