88mm Turbo LQ4 6.0L '87 GN -- BMF Racing build/swap - LS1TECH

Log In 


Conversions & Hybrids LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

88mm Turbo LQ4 6.0L '87 GN -- BMF Racing build/swap

Reply
 
Thread Tools Search this Thread
Old 01-25-2012, 02:40 PM   #1
TECH Enthusiast
Thread Starter
iTrader: (6)
 
BMF_Racing's Avatar
 
Join Date: Jan 2012
Location: Alexandria, Ky
Posts: 539
Default 88mm Turbo LQ4 6.0L '87 GN -- BMF Racing build/swap

So I have removed the old 374cu SBC to make room for the turbo LQ4. The vehicle is a '87 GN that is still a stock looking car (full interior and power everything) but is 8.50 cert. I'm guessing the car will be 3950 with driver. I will be reusing the turbo 400 and 9" since they are already built. Going to us HP tuners on factory drive by cable PCM.

Specs on engine:

- Complete drop out -- 2001 LQ4 with 32,xxx miles.
- Long block is completely stock except:
-stock rings regapped to .030"
-80lb Siemens Deka Injectors EV1 (PN: FI114961)
-ARP2000 rod bolts (PN: arp-234-6301)
-ARP Pro head studs (PN: arp-234-4110)
-LS9 head gaskets (PN: 12622033)
-LS9 MAP Sensor (PN: 12592525)
-yellow LS6 valve springs (PN: 12499224)
-Adapter Flexplate - LS to TH350/400 (PN: 12621399)
-Flexplate bolts (PN: 12563533)
-Flexplate Spacer (PN: 12563532)
-Edelbrock fuel rail kit (PN 3638)


Turbo stuff:

-PTE PT4788 T6 0.96ar
-5" Aluminum Downpipe
-Large Water to Air Intercooler (front mount)
-3" coldside pipes
-JGS 60mm WG
-JGS 50mm BOV


Going to try to use factory truck manifolds and do some type of crossover to the Passenger side, kind of like the factory hotside setup would have been in the GN 3.8L engine. Hope to place the turbo in a similar to stock GN arrangement also. We will see how that works out when I get the engine in the car and check for clearances.

The built N/A 374 ran 11.2 @ 122mph. I hope this "stock" LQ4 with 15 or so PSI isn't slower. EDIT: it was faster at only 6psi it ran 11.10.

Guess we will see, many pics to come of the build.

Last edited by BMF_Racing; 08-29-2014 at 07:04 AM.
BMF_Racing is offline   Reply With Quote
Old 01-25-2012, 09:59 PM   #2
TECH Enthusiast
Thread Starter
iTrader: (6)
 
BMF_Racing's Avatar
 
Join Date: Jan 2012
Location: Alexandria, Ky
Posts: 539
Cool

Here's a few pics to start off the build.

the car with the 374 SBC



374 out



The LQ4 getting ready to go in



PT4788 w/5" DP
BMF_Racing is offline   Reply With Quote
Old 01-26-2012, 02:03 AM   #3
Staging Lane
iTrader: (1)
 
Join Date: Jul 2009
Location: Springfield,Ohio
Posts: 60
Default

Good luck I'll stay posted and hopefully this will give me the boost I need to start my 5.3 turbo project. Keep the pics coming, nice GN
YungSteph is offline   Reply With Quote
Old 01-26-2012, 05:52 AM   #4
On The Tree
iTrader: (4)
 
Join Date: Oct 2011
Location: Tennessee
Posts: 118
Default

I miss my GN, great looking car you have there and cant wait to see more.
nos487 is offline   Reply With Quote
Old 01-26-2012, 08:00 AM   #5
TECH Enthusiast
Thread Starter
iTrader: (6)
 
BMF_Racing's Avatar
 
Join Date: Jan 2012
Location: Alexandria, Ky
Posts: 539
Thumbs up

Quote:
Originally Posted by YungSteph View Post
Good luck I'll stay posted and hopefully this will give me the boost I need to start my 5.3 turbo project. Keep the pics coming, nice GN
Let me know if you go with HP Tuners, my buddy has it on his '87 Blazer 2dr 2wd turbo PTE74mm 5.3L. He has 60lb injectors with meth, ran 124mph @14psi with it really falling on its face on top end (ran out of gear & old valve springs). Might be able to save you some time on the setups.

Should have more pics soon of my project, dropping it in today. Its going to be a long weekend.
BMF_Racing is offline   Reply With Quote
Old 01-26-2012, 08:05 AM   #6
Captain Double Post
iTrader: (2)
 
Join Date: Jun 2010
Location: Elyria Ohio
Posts: 1,664
Default

love the white
BOBS99SS is offline   Reply With Quote
Old 01-26-2012, 08:28 AM   #7
TECH Enthusiast
Thread Starter
iTrader: (6)
 
BMF_Racing's Avatar
 
Join Date: Jan 2012
Location: Alexandria, Ky
Posts: 539
Cool

Quote:
Originally Posted by BOBS99SS View Post
love the white
Thanks, me too. I've always wanted a GN, but didn't want a black car. When this one came along I had to have it.
BMF_Racing is offline   Reply With Quote
Old 01-26-2012, 10:24 AM   #8
Launching!
iTrader: (5)
 
Join Date: Aug 2009
Location: Monsey NY
Posts: 251
Default

Pls. take some pics when you drop in the engine. I'm doing the same with a GT 4788 T4. with a 6.0 and 4L80E, am using the same headers as Mike Bamford headers .
lamdenali is offline   Reply With Quote
Old 01-26-2012, 12:01 PM   #9
TECH Enthusiast
Thread Starter
iTrader: (6)
 
BMF_Racing's Avatar
 
Join Date: Jan 2012
Location: Alexandria, Ky
Posts: 539
Question

Quote:
Originally Posted by lamdenali View Post
Pls. take some pics when you drop in the engine. I'm doing the same with a GT 4788 T4. with a 6.0 and 4L80E, am using the same headers as Mike Bamford headers .
Are you looking for mostly exhaust routing or just everything in general? It will be on the lift so it shouldn't be a problem to get whatever.

Last edited by BMF_Racing; 01-26-2012 at 09:47 PM.
BMF_Racing is offline   Reply With Quote
Old 01-26-2012, 12:53 PM   #10
Launching!
iTrader: (5)
 
Join Date: Aug 2009
Location: Monsey NY
Posts: 251
Default

I really want to see if you could fit the truck pan with your set up.
lamdenali is offline   Reply With Quote
Old 01-26-2012, 02:25 PM   #11
Staging Lane
iTrader: (3)
 
Join Date: Dec 2011
Location: Delaware, Oh
Posts: 83
Default

That is one clean looking car! Can't wait to see more progress!
Stoney667 is offline   Reply With Quote
Old 01-31-2012, 05:49 PM   #12
TECH Enthusiast
Thread Starter
iTrader: (6)
 
BMF_Racing's Avatar
 
Join Date: Jan 2012
Location: Alexandria, Ky
Posts: 539
Cool

Ok, got alot done so here comes the pics of the progress.


First had to make room for the ultra bell.



Here's the adapter/mounts I used.



Engine finally in.



Shot of the oil pan. I can be pretty sure when I say the stock truck pan will not fit the factory g-body cross over. You can see in the second pic in this thread what my crossmember looks like now.


Trying to figure out where the 88 is going to fit/work



Turbo brace/mount in place
BMF_Racing is offline   Reply With Quote
Old 01-31-2012, 06:16 PM   #13
TECH Enthusiast
Thread Starter
iTrader: (6)
 
BMF_Racing's Avatar
 
Join Date: Jan 2012
Location: Alexandria, Ky
Posts: 539
Default

The idea of trying to replicate the hotside pipes from a factory GN 3.8L turbo setup kinda worked out. I was able to use the factory truck drivers side manifold in the stock direction. Chopped the end off and welded on a slight bent to a v-band. The factory manifold welded very nice, much easier than normal cast iron.



Installed and everything clears.



Drivers side crossover 2.5" & vband



Passenger crossover 2.5" and up



To the Passenger side truck manifold flipped upside down and chopped and notched at the end for the merge, 88 in place.



Merge/collector all done.



Pass side all done with 60mm WG flange



all installed and WG on

Last edited by BMF_Racing; 01-31-2012 at 07:00 PM.
BMF_Racing is offline   Reply With Quote
Old 01-31-2012, 06:26 PM   #14
12 Second Club
iTrader: (14)
 
RacerXLs1's Avatar
 
Join Date: Aug 2008
Location: NWI
Posts: 1,266
Default

Looks good.. Gotta love them gn's
RacerXLs1 is offline   Reply With Quote
Old 01-31-2012, 06:59 PM   #15
TECH Enthusiast
Thread Starter
iTrader: (6)
 
BMF_Racing's Avatar
 
Join Date: Jan 2012
Location: Alexandria, Ky
Posts: 539
Thumbs up




Bottom shot of the turbo mounted.



12AN drian.



Custom front mount Water to Air intercooler done



Cold side pipes done/installed






We did all the HP Tuners stuff loaded & get it fired up and idling very well. Surprising the 5" dump to the ground it not as loud as you'd think. I'm happy with everything we got done in the Friday night to Sunday work time. Just need to clean everything up now its a mess from trouble shooting a small issue.
BMF_Racing is offline   Reply With Quote
Old 01-31-2012, 07:04 PM   #16
TECH Resident
iTrader: (3)
 
tt383lt1's Avatar
 
Join Date: Nov 2011
Location: mn
Posts: 853
Default

nice build. what did you use for all you gaskets on the hotside? is it copper sylincoln
tt383lt1 is offline   Reply With Quote
Old 01-31-2012, 07:13 PM   #17
TECH Fanatic
iTrader: (21)
 
Strokinit383's Avatar
 
Join Date: Dec 2004
Location: Fishers, IN
Posts: 1,230
Default

Cool swap! Car looks clean too.
Strokinit383 is offline   Reply With Quote
Old 01-31-2012, 08:31 PM   #18
TECH Fanatic
 
99VetteFRC's Avatar
 
Join Date: Oct 2011
Location: Felton Pa
Posts: 1,359
Default

Very nice.... I was imagining a turbo setup similar since everyone on the site seems to think I should use only 1 turbo instead of the 2 I bought.
99VetteFRC is offline   Reply With Quote
Old 01-31-2012, 09:21 PM   #19
TECH Enthusiast
Thread Starter
iTrader: (6)
 
BMF_Racing's Avatar
 
Join Date: Jan 2012
Location: Alexandria, Ky
Posts: 539
Talking

Quote:
Originally Posted by 99VetteFRC View Post
Very nice.... I was imagining a turbo setup similar since everyone on the site seems to think I should use only 1 turbo instead of the 2 I bought.
Yeah, figured the 1400hp that turbo is rated at is good enough & will far exceed any set up I have in the few years. Twins are cool, just no need for them for my setup. All about the go, not the show. Lol
BMF_Racing is offline   Reply With Quote
Old 01-31-2012, 09:22 PM   #20
TECH Enthusiast
Thread Starter
iTrader: (6)
 
BMF_Racing's Avatar
 
Join Date: Jan 2012
Location: Alexandria, Ky
Posts: 539
Thumbs up

Quote:
Originally Posted by tt383lt1 View Post
nice build. what did you use for all you gaskets on the hotside? is it copper sylincoln
Yeah but not sure how it will work out. Guess I'll find out.
BMF_Racing is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
'87 S10 Blazer - 5.3L 88mm GT4788 build - LM7 - BMF Racing BMF_Racing Conversions & Hybrids 25 06-04-2015 06:25 PM
UPDATE: test runs pg11 **Methanol 403 LsX -"Torque Stopper" intake 101mm Turbo '87 GN BMF_Racing Forced Induction 264 03-24-2015 08:09 AM
5.3 87s10 pt 47/88. Build/pics copley87blaze Conversions & Hybrids 27 07-18-2014 08:02 PM
Stock LQ4 with 88mm & 12psi (571whp/527wtq) BMF_Racing Dynamometer Results & Comparisons 23 11-21-2012 08:38 PM
URGENT : i have a LS (lq4 6.0 ) flexplate bolt question Dickie-311 Conversions & Hybrids 10 03-02-2010 05:31 AM


Tags
60, 60l, 88mm, build, complete, engine, factory, longblock, lq4, lsx, manifolds, pt4788, stock, turbo, welding

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 05:26 AM.