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The G-Body Swap Thread

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Old 03-16-2012, 08:55 PM
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Anyone with 1in setbacks with a 4l80e trans have to shorten the drive shaft? Or will the stock GN one work?
Old 03-17-2012, 01:46 AM
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About to build this beast with yall. trying to track down a lq9 to build and put in my 84 cutlass.
Old 03-18-2012, 01:25 PM
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yes you will have to shorten the DS. by how much, i do not know. im building an lq4 right now with a 4l80 to go into a 87 monte ss. if it hasnt been covered by the time i get around to it, i will update
Old 03-18-2012, 03:42 PM
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Originally Posted by SE-R Spec
yes you will have to shorten the DS. by how much, i do not know. im building an lq4 right now with a 4l80 to go into a 87 monte ss. if it hasnt been covered by the time i get around to it, i will update
ok thanks
Old 03-18-2012, 04:49 PM
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You will definitely need to shorten drive shaft with 4l80e.

I sent a pm member 76LQ9TA the other day asking about his swap. He is using a 4l60e. Said the original length of this drive shaft in his 85 cutlass was about 57" and after having it cut down it ended up being around 51" or so. That's with set back plates.
Old 03-26-2012, 07:13 AM
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Purchased most of the things needed in the gbody swap... Should be putting motor in later this week currently cleaning up the engine bay.. Check my pictures to see what it looks like now and some of the items I purchased so far
Old 03-29-2012, 02:30 PM
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Default Drive Shaft shortened

I took my drive shaft from a 1979 Monte Carlo to a shop to get it shortened and balanced and the company told me that it's going to cost around 240... I was wondering if this is what it usually cost?
Old 03-29-2012, 05:33 PM
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Going to depend a lot on your location.

I've heard of some people getting it done for around $100 give or take.
Old 03-29-2012, 05:33 PM
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Originally Posted by mhsmontels1
I took my drive shaft from a 1979 Monte Carlo to a shop to get it shortened and balanced and the company told me that it's going to cost around 240... I was wondering if this is what it usually cost?
Thats way too much. It should be around 100 bucks. I got mine done last year for 80.
Old 03-29-2012, 06:39 PM
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Just got done putting a 5.3 in my 79 malibu fairly easy swap ...I do need a different pan being my car is low ..did a little exhaust massage , and bam its in ...I just need to figure out how to get pics from my phone to here
Old 03-29-2012, 06:42 PM
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Got my drive shaft done at local 4by4 shop 40 bucks
Old 03-30-2012, 12:05 AM
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I decided to go ahead and get it done because they said that they are going to change the shaft tubing to a brand new tube and two new universal joints.... I thinks I should have looked for a cheaper solution but I'm tired of waiting to drive my car!!!!!!!!!!!!!!
Old 03-30-2012, 01:50 AM
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I think it's fair.. I also need to get a driveshaft done as well was even thinking of picking up a aluminum one to get it shortened.
Old 03-30-2012, 06:00 PM
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Went to two different places today.

One Truck dismantler for various type of trucks

And the other was GM dismantler.

1st place

5.3L 78k harness all accessories EVERYTHING needed $1800

6.0L 89k EVERYTHING needed $2000

Both included rebuilt trans of my choice, 0 miles with warranty (forgot how long of warrany, have to check my notes)


2nd place GM place wants

2000 for 5.3l complete take out

2800 for 6.0l complete take out

anywhere from 80k-100k plus on motor and trans 3 month warranty or something like that.

Think its obvious I want to deal with first place. Thinking should I try and low ball fist place by $100 or so for the 6.0L . Or take it and RUN!!!
Old 03-30-2012, 11:41 PM
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Also anyone using double pass radiator with their swap?

Was looking at this one, looked like it should fit nice after taking measurements. And looks a whole lot better then having to cut/find radiator hose to stretch across to other side.

http://compare.ebay.com/like/1208695..._lwgsi=y&cbt=y
Old 04-06-2012, 03:35 AM
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what hoses will fit with the c5 corvette LS1 steering pump and the monte steering box?
Old 04-06-2012, 08:00 AM
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Question Help///// Newbie needs all types of help with 5.3 goody swap

Im located in Brooklyn NYC and I'm looking to seriously do a swap on my 83 cutlass sedan .....I'm looking for some knowlegable people in my area that won't mind helping me getting dirty and doing this Im gathering my parts now I have some lift on loan at a friend shop ......I know he is to busy running his bigness to help out don't ask ,,,,,, just need another set of hands don't mind getting dirty ......compensation to be discussed ......
Old 04-09-2012, 11:43 PM
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I see a lot of G-body swaps with the 1" set back plates. Is everyone also moving the transmission cross member back 1"? And what are the advantages of moving the engine back an inch (aside from better weight distribution)?
Old 04-10-2012, 09:39 AM
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Originally Posted by mhsmontels1
I took my drive shaft from a 1979 Monte Carlo to a shop to get it shortened and balanced and the company told me that it's going to cost around 240... I was wondering if this is what it usually cost?
Many shops that offer to cut and then balance will not balance unless you have new U-joints installed.

I chose to press mine out, buy new ones and press them in. The shop service to cut and balance afterwards was 70.00. But if I remember correctly they were looking for around 180.00 parts and labor if they did the u-joints.

They have to make money on parts so the parts were higher for the same parts I bought at a known auto parts store.

Maybe this is why your estimate is this high?
Old 04-10-2012, 10:03 AM
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Originally Posted by BOXCHEV
Also anyone using double pass radiator with their swap?

Was looking at this one, looked like it should fit nice after taking measurements. And looks a whole lot better then having to cut/find radiator hose to stretch across to other side.
I was considering this when looking for a rad but since I could not get one that would fit clean with the Buick GN rad top/mount I decided to just get the standard rad and use the hoses others have used. Plus this one had a provision for the vent tube (the brass barb fitting in picture). Yes I know there are cleaner looking ways to do this but this is what I did as it was easy.



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