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 > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board > Squarebody Projects and Builds

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-05-2016, 09:02 PM   #1
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
1987 R20 Suburban LQ4 4L80E swap

I have posted several threads all over this forum asking questions regarding my swap and want to say thanks again for the answers.
Truck is an all stock 1987 3/4 ton 2wd Suburban that originally came with a TBI 454 th400 combo. The engine looks like it was replaced at one time as I have seen an ATK badge stamped to the bottom of the motor. The 454 is tired and worn out and needs to go. This is my daily driver and I drive about 75 miles a day round trip to work so I need this to be reliable.
My parts:
2004 LQ4 with about 105,000 miles complete with all accessories
Standalone harness and ECU
Gas pedal and TAC unit
Rebuilt 4L80E transmission
Slip yoke for 4L80E
All of this was ordered from LSX4U and should be here on Thursday.

I won't bore everyone with all the little odds and ends but my parts list includes:
Entropy LSX swap radiator with fans and dual fan control kit
Dakota digital instrument cluster
Dirty dingo slider mounts, new stock clamshells
Hooker LS swap exhaust manifolds
Walbro 255 Lph fuel pump
Corvette regulator/filter
Russell steel braided fuel lines/fittings for fuel lines and trans cooler lines
Specter air intake
Dirty dingo high mount A/C compressor bracket
Sadden 508 A/C Compressor
Dirty dingo power steering hose adapter
Dirty dingo billet ECU mount
Lokar shift linkage
Lokar transmission fluid dipstick

I plan on starting this next week and am allowing two months to get this done.
I figure one month to get everything installed and another month to sort out any problems that are sure to arise.
Will keep everyone posted on progress and will post once I get started.
Attached Images
 
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-05-2016, 09:15 PM   #2
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

This is what all of this will be going into.
Sorry, site will only allow me to post one pic per post.
Attached Images
 
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-05-2016, 11:13 PM   #3
slotard
Registered User
 
Join Date: Nov 2014
Location: Alameda, CA
Posts: 875
Re: 1987 R20 Suburban LQ4 4L80E swap

Sounds like it'll be a very nice swap. Will you be keeping the engine stock?
__________________
1973 C20, 350/350
slotard is offline   Reply With Quote
Old 01-05-2016, 11:34 PM   #4
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Yes keeping it stock for now, I'm borrowing my dad's truck while mine will be down and don't want to spend time, or money on performance yet, as I would like to either build another LQ4 over time, or turbocharge my existing setup.
My current build has taken me a while to research and figure out all the details, when I start upgrading power I want it to be thought out and well planned.

Thanks for the kind words
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-08-2016, 12:23 AM   #5
MTCK
Registered User
 
MTCK's Avatar
 
Join Date: Dec 2009
Location: Fairbanks, AK
Posts: 1,727
Re: 1987 R20 Suburban LQ4 4L80E swap

Good looking rig. Sounds like a realistic timeframe.
__________________
-Marcus

1991 V3500 L29 454 4L80E NP205 D60/14 Bolt 4.56's
1984 K30 292 TH400 NP205 D60/14 Bolt 4.56's flat bed 7'6" Meyer Plow
2017 Yukon XL SLT
Project Daily Driver
Project Heavy Hauler
Project Plow Truck
MTCK is offline   Reply With Quote
Old 01-08-2016, 11:59 PM   #6
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Motor/Trans is in!
Decided to go ahead and order a new water pump, O2 sensors, ignition coils, and thermostat. Going to push the build back a week waiting for more parts before I start.
Attached Images
 
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-12-2016, 11:52 PM   #7
77K10Silverado
Registered User
 
77K10Silverado's Avatar
 
Join Date: Jul 2014
Location: Winston-Salem, NC
Posts: 563
Re: 1987 R20 Suburban LQ4 4L80E swap

Yes!
__________________
Mike B.

77 K10 - http://67-72chevytrucks.com/vboard/s...=1#post6752641
77K10Silverado is offline   Reply With Quote
Old 01-15-2016, 04:33 PM   #8
rktolds
Registered User
 
Join Date: Dec 2005
Location: Oklahoma City, OK
Posts: 36
Re: 1987 R20 Suburban LQ4 4L80E swap

Love your suburban. I am toying with the idea of a 3/4 ton family hauler. Love the LS idea too. Dependable in a classic package.
rktolds is offline   Reply With Quote
Old 01-15-2016, 10:39 PM   #9
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Quote:
Originally Posted by rktolds View Post
Love your suburban. I am toying with the idea of a 3/4 ton family hauler. Love the LS idea too. Dependable in a classic package.
Thank you, that is what I'm going for exactly.
I say go for the Burb. I use mine as a family hauler every day, and drive 80 miles round trip a day for work. The way it stands out in a parking lot among all the small round cars of today is great too.
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-19-2016, 04:08 PM   #10
aggie91
I'm just glad to be here!
 
aggie91's Avatar
 
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,150
Re: 1987 R20 Suburban LQ4 4L80E swap

Love the color combo. I am looking at an 84 C10 SWB that is the same colors.

You will really like the LS swap. I have done 2 and both have been great drivers.
__________________
Karl



1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)
http://67-72chevytrucks.com/vboard/s...d.php?t=372424

The LST Challenge:
http://67-72chevytrucks.com/vboard/s...=1#post7812257

Korbin's 1st Square: "Sunburn"
http://67-72chevytrucks.com/vboard/s...d.php?t=418618

1985 GMC Sierra: "White Trash", Korbin's 2nd now...
http://67-72chevytrucks.com/vboard/s...d.php?t=632305

Henry - 1984 Chevrolet, Owen's 1st Square
aggie91 is offline   Reply With Quote
Old 01-19-2016, 04:56 PM   #11
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Thanks,
Been very busy at work lately, all of the lifts have cars on them right now,it may be this Saturday before I can start on it. While I'm waiting for a lift to be free, ordered a new alternator, and starter. Hope to start soon!
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-21-2016, 10:17 PM   #12
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Found a little time to work on the Burb today, got the gas tank out.
Not an exciting step, but it's a start!
Attached Images
 
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-22-2016, 02:22 PM   #13
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Got my Walbro fuel pump installed.
Attached Images
 
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-22-2016, 02:29 PM   #14
68Timber
I know the pieces fit
 
68Timber's Avatar
 
Join Date: Nov 2007
Location: MONTGOMERY, AL
Posts: 5,087
Re: 1987 R20 Suburban LQ4 4L80E swap

Quote:
Originally Posted by Nodnarb76 View Post
The way it stands out in a parking lot among all the small round cars of today is great too.
Because life is too short to drive jelly beans. That's what I tell my sons anyway. Nice upgrade on a really clean truck, I'll be watching for sure.
__________________
John

79 2wd Blazer (Bruiser)
85 M1009 Blazer (Sarge) build
74 Honda Z50 build
68Timber is offline   Reply With Quote
Old 01-25-2016, 03:55 PM   #15
77c10
Registered User
 
77c10's Avatar
 
Join Date: Aug 2011
Location: Gallatin, TN
Posts: 782
Re: 1987 R20 Suburban LQ4 4L80E swap

Where are you gonna mount the ECU?
__________________
77 C10, 6.0LS/4L80E, 3:73 12 bolt. Boss 338's 20" x 10" w/ 285/50/20 rear. 20" x 8.5" w/ 245/40/20 front. Vintage Air. Full Autometer gauges recessed in factory bezel (Thanks bigblock73!) Gm Storm Grey Metallic paint

"Cool ain't ever cheap and cheap ain't ever cool"
77c10 is offline   Reply With Quote
Old 01-25-2016, 08:37 PM   #16
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Quote:
Originally Posted by 77c10 View Post
Where are you gonna mount the ECU?
Thinking about mounting it to the driver's fender.


Got a full day to work on it today, think I have everything off the motor and transmission, tomorrow should pull the motor and transmission.
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-25-2016, 10:04 PM   #17
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Snapped a pic before I went home for the night.
Attached Images
 
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-30-2016, 01:01 AM   #18
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Got the motor and transmission out today.
Attached Images
 
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-30-2016, 01:06 AM   #19
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Empty engine bay.
Attached Images
 
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-30-2016, 01:08 AM   #20
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Transmission out
By the way, nobody got murdered in the top right corner of the pic.
Attached Images
 
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824

Last edited by Nodnarb76; 01-30-2016 at 01:14 AM.
Nodnarb76 is offline   Reply With Quote
Old 01-30-2016, 01:18 AM   #21
DirtyLarry
Windy Corner of a Dirty Street
 
DirtyLarry's Avatar
 
Join Date: Jun 2003
Location: Pueblo West, Colorado
Posts: 2,916
Re: 1987 R20 Suburban LQ4 4L80E swap

Very nice old burb project! Looks like you’re off to a good start too. Curious as to why you’re choosing to go with an aftermarket radiator instead of using the original radiator that was already in this Suburban (especially, if it was the big 4 core radiator that are typically found in BBC Suburban’s)? The big old copper radiators cool much better than the aluminum radiators anyway. Also curious about the reasoning for the Dakota Digital cluster? They look absolutely cool as heck but I can’t justify the price they’re asking for them. The cluster really doesn’t need to be changed to an expensive aftermarket cluster when doing this kind of swap although a lot of people think it does. I still use the original clusters 3 square bodies that have received late model engines.

Looks like a nice dealership to work in! Looking forward to more
DirtyLarry is offline   Reply With Quote
Old 01-30-2016, 02:08 AM   #22
MTCK
Registered User
 
MTCK's Avatar
 
Join Date: Dec 2009
Location: Fairbanks, AK
Posts: 1,727
Re: 1987 R20 Suburban LQ4 4L80E swap

Good progress! I think you'll beat you're estimate. Should be done by Wednesday
__________________
-Marcus

1991 V3500 L29 454 4L80E NP205 D60/14 Bolt 4.56's
1984 K30 292 TH400 NP205 D60/14 Bolt 4.56's flat bed 7'6" Meyer Plow
2017 Yukon XL SLT
Project Daily Driver
Project Heavy Hauler
Project Plow Truck
MTCK is offline   Reply With Quote
Old 01-30-2016, 10:32 PM   #23
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Quote:
Originally Posted by DirtyLarry View Post
Very nice old burb project! Looks like you’re off to a good start too. Curious as to why you’re choosing to go with an aftermarket radiator instead of using the original radiator that was already in this Suburban (especially, if it was the big 4 core radiator that are typically found in BBC Suburban’s)? The big old copper radiators cool much better than the aluminum radiators anyway. Also curious about the reasoning for the Dakota Digital cluster? They look absolutely cool as heck but I can’t justify the price they’re asking for them. The cluster really doesn’t need to be changed to an expensive aftermarket cluster when doing this kind of swap although a lot of people think it does. I still use the original clusters 3 square bodies that have received late model engines.

Looks like a nice dealership to work in! Looking forward to more

Thanks, for the kind words! Going with the Enytropy Radiator for the cooling fans, steam hose fitting and cool factor. Plus my old radiator was getting kind of crusty inside. Going with the Dakota Digital Gauges for the convenient hookup, added tach, and cool factor as well.
I'm a service advisor for a Hyundai dealership and have keys to the shop so I can come and go as I please which helps a lot which is the good news, bad news is I work 12 hour days 4 days a week, and my job is 40 miles away, plus my kids get out of school at 2:30 and I need to be home for them on my off days, so I don't have a lot of free time to work on it. But in the little blocks of time I have found I do feel I've gotten a lot done! Plus I have a great tech who has offered to help with the heavy lifting and any trouble shooting if problems arise.
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 is offline   Reply With Quote
Old 01-31-2016, 11:56 PM   #24
68basket
Registered User
 
Join Date: Dec 2012
Location: louisville, ky
Posts: 480
Re: 1987 R20 Suburban LQ4 4L80E swap

love this build. Following along
68basket is offline   Reply With Quote
Old 02-01-2016, 11:41 PM   #25
Nodnarb76
Registered User
 
Nodnarb76's Avatar
 
Join Date: May 2013
Location: Mississippi
Posts: 410
Re: 1987 R20 Suburban LQ4 4L80E swap

Got a lot more done today.
Got the TBI harness out.
Attached Images
 
__________________


1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824
Nodnarb76 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 03:46 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com