The G-Body Swap Thread
TECH Regular
Joined: Jan 2007
Posts: 403
Likes: 17
Can i hook my engine speed signal from the pcm directly to my factory mcss tach? Or do i need to wire it like this?
http://www.lt1swap.com/lsx_tach.htm
I know the pcm tach output has to be changed to 8 cyl mode, but i didnt know if my pcm has the power to run my factory tach.
http://www.lt1swap.com/lsx_tach.htm
I know the pcm tach output has to be changed to 8 cyl mode, but i didnt know if my pcm has the power to run my factory tach.
TECH Fanatic
Joined: Jun 2014
Posts: 1,533
Likes: 12
Any pics of g bodys with 18 in irocs? Thinking of 18 in irocs on my 83 cutlass .been looking everywhere but can't fig out backspacing and also need to fig out fattest tire I can put on back without notching frame the ones on ebay are 4 in bs if any body has them I would love a pic everybody online is rolling on 22-24 I saw one with 17s that didn't look to bad anyway my swap is a 2010 ly6/4l80e and prob a ford 9 . Also what do u think is a good gear to run with combo?i was thinking 373s I'm keeping vvt and went with mast motorsports ss cam and spring combo supposed to be 509hp now I'm just waiting for holley to release new mounts and headers going with psi harness ls3 intake holley front drive. car is all original with 80k was stored in a barn for 20 yrs black with tan buckets going to be sick!!!
TECH Fanatic
Joined: Aug 2011
Posts: 1,324
Likes: 6
From: Marengo, Ia
https://ls1tech.com/forums/attachmen...-tech-data.pdf
TECH Fanatic
Joined: Jun 2014
Posts: 1,533
Likes: 12
That sucks but it will prob save me $$ I have the truck front drive but no ps pump I could use the r4 Ac bracket and ps pump with smaller pulley I just want something nice I've been busting my *** trying to pay for this any ideas that won't break the bank? So confusing
Banned
Joined: Feb 2013
Posts: 3,540
Likes: 207
Holley front drive wont clear with there new mounts.
https://ls1tech.com/forums/attachmen...-tech-data.pdf
https://ls1tech.com/forums/attachmen...-tech-data.pdf
In order to take advantage of the improved engine/transmission installed geometry that the new mounting brackets provide, you need to use a truck, F-body or GTO accessory drive set-up.
Teching In
Joined: Feb 2005
Posts: 9
Likes: 0
What components system seems to work easily with a 5.3 truck setup in a g body. I have a 84 MC SS and am looking for an easy setup where I can bolt the motor in and then have my guy wire it.
Thank you for your replies in advance.
Jeff
Thank you for your replies in advance.
Jeff
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Verdad Gallardo Banned
Joined: Feb 2013
Posts: 3,540
Likes: 207
The new Hooker G-body LS swap components combined with the Holley 302-2 oil pan will allow you to drop that 5.3L truck engine right in and not have to worry about finding a bunch of other parts that may or may not work together in an optimized fashion. The exception to the bolt-in compatibility is the truck low-mount A/C compressor, which can be installed by notching the frame if you really want to run it. The other option is to use a top-mount compressor relocation bracket like those available from Holley for the R4 and Sanden compressors.
Teching In
Joined: Oct 2014
Posts: 13
Likes: 0
From: POMONA
got mine all mounted up in the car last night.
1985 Monte SS
$100 160k 2003 5.3 LM7 from JY with 0411 PCM (No harness)
PSIConversions harness
Moroso solid SBC mounts & EBay 1" setback swap plates
H3 "Muscle Car" Oil pan
Stock truck accessories & intake
LS1 cam, PAC springs, LS9 MLS headgaskets, KMJ studs
Drivers side Fbody manifold
Passenger side truck manifold
04 4L80E w/ transgo HD2
Stock 80E converter at this time. Soon to be 4k CircleD Triple Billet
Iceman crossmember
Total spent for engine swap: $1356
I already had the 80E in the car
the Passenger valve cover rear coil mount boss needs to be hacked off as it just barely touches the AC box but that's about the only interference I've ran into. Still haven't tried the hood but it looks promising. Oil pan does hang lower than I would like. I'll get some measurements of that at some point.
1985 Monte SS
$100 160k 2003 5.3 LM7 from JY with 0411 PCM (No harness)
PSIConversions harness
Moroso solid SBC mounts & EBay 1" setback swap plates
H3 "Muscle Car" Oil pan
Stock truck accessories & intake
LS1 cam, PAC springs, LS9 MLS headgaskets, KMJ studs
Drivers side Fbody manifold
Passenger side truck manifold
04 4L80E w/ transgo HD2
Stock 80E converter at this time. Soon to be 4k CircleD Triple Billet
Iceman crossmember
Total spent for engine swap: $1356
I already had the 80E in the car
the Passenger valve cover rear coil mount boss needs to be hacked off as it just barely touches the AC box but that's about the only interference I've ran into. Still haven't tried the hood but it looks promising. Oil pan does hang lower than I would like. I'll get some measurements of that at some point.
WOW! only 1K on the swap. thats what am talking about, QUICK QUESTION IS WHAT IS EVERY ONE DOING FOR THE DRIVE SHAFT! CUSTOM MADE???
Hey 89ls1foxer!!
I'm planning on putting my lsa blower in my G body as well. An '86 elky.
Have you figured out What accessories your going to use? What about a/c ?
I'm figuring on using a high mount ac compressor but Idk if the stock lsa accessories would work down in our frame rails.
I was thinking about using a corvette accessory drive but Idk if that will clear the blower.
I'm planning on putting my lsa blower in my G body as well. An '86 elky.
Have you figured out What accessories your going to use? What about a/c ?
I'm figuring on using a high mount ac compressor but Idk if the stock lsa accessories would work down in our frame rails.
I was thinking about using a corvette accessory drive but Idk if that will clear the blower.
On The Tree
Joined: Dec 2012
Posts: 153
Likes: 1
From: Phoenix, AZ
I put the LSA in my 86 GN. Fit great with Spohn/f-body mounts. I used the alternative GM performance accessory drive kit that puts the Alt up higher. No issues with steering box at all. Plenty of room. I used the Alan Grove lower corvette (Same as LSA) A/C mount for the Sanden SD5.
I notched the frame to tuck in the compressor. I don't think you can mount the A/C high on the passenger side due to the supercharger tensioner(I may be incorrect)
My $.02
I notched the frame to tuck in the compressor. I don't think you can mount the A/C high on the passenger side due to the supercharger tensioner(I may be incorrect)
My $.02
Here is some pics of the oil pan i had custom made to my specs by Doug Lee @ Propans great guy to deal with and awesome work!
I took some ideas from a few different pan designs i seen and had him roll it into one it holds 7qts in the pan plus the filter which is a stock screw on type and it has trap door's in there also just cant see them in the pics!
I took some ideas from a few different pan designs i seen and had him roll it into one it holds 7qts in the pan plus the filter which is a stock screw on type and it has trap door's in there also just cant see them in the pics!
Last edited by 6togo; Dec 3, 2014 at 07:11 AM.
Teching In
Joined: Jan 2015
Posts: 3
Likes: 0
oil pan question The new Hooker G-body LS swap components combined with the Holley 302-2 oil pan will allow you to drop that 5.3L truck engine right in and not have to worry about finding a bunch of other parts that may or may not work together in an optimized fashion. The exception to the bolt-in compatibility is the truck low-mount A/C compressor, which can be installed by notching the frame if you really want to run it. The other option is to use a top-mount compressor relocation bracket like those available from Holley for the R4 and Sanden compressors.