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Re: 84 G20 LS Swap Project [Re: NEmery] #750712
July 17th 2019 8:00 pm
July 17th 2019 8:00 pm
Joined: Sep 2017
Posts: 59
MN
JAGI410 Offline OP
journeyman
JAGI410  Offline OP
journeyman
Joined: Sep 2017
Posts: 59
MN
Originally Posted by NEmery
awesome!!!

out of curiosity, did you put AC Back on the van? if so, did the old lines match up?

and what plans do you have for the stock AC Compressor?

did you have to change the tank, or could you have just replaced the sender? any other fuel lines need changed?

power steering pump lines, radiator hoses, etc? all custom made?


Good questions.

AC: AC is NOT in the van currently. My hope was to modify the stock LS/truck compressor bracket and use the truck compressor in the stock/LS location but it's going to be tight. Custom lines would have to be made (coldhose.com) but the stock drier/condensor should work fine. Plan B is to use the Holley AC bracket ($150ish) with a new Sanden compressor ($300ish). Holley has dimensions on their site, I just need to figure out what fits. Lower priority for now.

Fuel: Since my van was carbed and not TBI, I had to change the tank to get one with a baffle. If you have a TBI van, you can use your stock sender and just replace the pump! TBI hard lines should work too. I didn't check if the carb hard lines would work, I just ripped them out and replaced them anyway. The baffled tank is technically optional, but then you'd have to run an external pump, which can be noisy.

Power steering: Stock LS lines thread right into the van steering box!

Radiator hoses: Stock van lower hose, slightly trimmed. Stock LS truck upper hose, no mods.

Last edited by JAGI410; July 18th 2019 10:36 pm.

Jason
1984 Chevy G20 5.3L/4L60E
AdSense long
Re: 84 G20 LS Swap Project [Re: JAGI410] #750716
July 18th 2019 1:34 am
July 18th 2019 1:34 am
Joined: Feb 2016
Posts: 504
Portland, OR
D
Deathorvictory Offline
addict
Deathorvictory  Offline
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D
Joined: Feb 2016
Posts: 504
Portland, OR
Did you disassemble the motor in any way to refresh it?


1979 Dodge B200 Shorty, 1987 B250 Longy
Re: 84 G20 LS Swap Project [Re: JAGI410] #750720
July 18th 2019 9:21 am
July 18th 2019 9:21 am
Joined: Mar 2019
Posts: 61
Riverdale, new jersey, united ...
J
Juntao_DW Offline
journeyman
Juntao_DW  Offline
journeyman
J
Joined: Mar 2019
Posts: 61
Riverdale, new jersey, united ...
a lot of s10 guys either notch the frame and do custome lines and use the ls compressor or you can modify the stock ac brackets for a tbi v8 and reuse the old harris compressor like this which if you have the room may eliminate the need for custom lines to be made.
[Linked Image]

Re: 84 G20 LS Swap Project [Re: Deathorvictory] #750729
July 18th 2019 10:34 pm
July 18th 2019 10:34 pm
Joined: Sep 2017
Posts: 59
MN
JAGI410 Offline OP
journeyman
JAGI410  Offline OP
journeyman
Joined: Sep 2017
Posts: 59
MN
Originally Posted by Deathorvictory
Did you disassemble the motor in any way to refresh it?


Not really. This engine had 140k on it. I pulled one valve cover and I swear it could have passed for new. No sludge, barely any discoloration. Obviously a well maintained engine. I pulled the intake manifold (these engines are prone to collecting all sorts of garbage under there) and cleaned it up. I cleaned/sealed the knock sensor plugs, put new intake gaskets on it (common failure) and dropped it in. With these engines commonly hitting 300k+ miles, and not having big power goals, going deeper inside the engine wouldn't be worth it. There's a saying in the LS swap community, that you "Let the magic out" if you open it up!


Jason
1984 Chevy G20 5.3L/4L60E
Re: 84 G20 LS Swap Project [Re: JAGI410] #750730
July 18th 2019 11:06 pm
July 18th 2019 11:06 pm
Joined: May 2016
Posts: 6
Clark County, WA
D
deezuldon Offline
stranger
deezuldon  Offline
stranger
D
Joined: May 2016
Posts: 6
Clark County, WA
Buddy of mine is doing a "frame up" (such as it is,being unibody) restoration on a 1975 G20 shortbed in Idaho. He's done several award-winning Chevy cars, a truck or two, a 'Vette; he knows what he's doing, Builds his own motors, does all his own body work and paint - and has won awards for the body work & paint as well. Pulled out the stock 5.7 engine, dropped in an LS LQ4 6.0L Z06 motor in it's place. Dynoed right at 400 HP/400 lb-ft torque.TIGHT fit! Not as much room as Jason's 5.3L in his '84 G20. No room for headers; using GM cast iron "header" style manifolds. Mated a built 4L60E from Bow Tie transmissions in Hesperia, CA. Long term project; hasn't been run yet. Body cherried out, paint just about finished. Motor's been in for quite a while. Very labor-intensive project. But, getting closer!

If I can find some pics and can figure out how to upload to this site/forum, will do later. Everyone in Idaho laughed when he said he was dropping an LS motor in an old GMC van and said "Why?" Good question! Ask Jason. He knows the answer. Someday soon my Idaho buddy will, too!

Re: 84 G20 LS Swap Project [Re: JAGI410] #750792
July 20th 2019 7:25 pm
July 20th 2019 7:25 pm
Joined: Nov 2013
Posts: 3,461
Michigan
Dyno_Dave Offline
pooh-bah
Dyno_Dave  Offline
pooh-bah
Joined: Nov 2013
Posts: 3,461
Michigan
That's a great fit. Your homework paid off for sure. Congratulations!

Re: 84 G20 LS Swap Project [Re: JAGI410] #750828
July 22nd 2019 7:10 am
July 22nd 2019 7:10 am
Joined: Oct 2015
Posts: 314
Beaufort, SC USA
NEmery Offline
enthusiast
NEmery  Offline
enthusiast
Joined: Oct 2015
Posts: 314
Beaufort, SC USA
Originally Posted by JAGI410
Originally Posted by NEmery
awesome!!!

out of curiosity, did you put AC Back on the van? if so, did the old lines match up?

and what plans do you have for the stock AC Compressor?

did you have to change the tank, or could you have just replaced the sender? any other fuel lines need changed?

power steering pump lines, radiator hoses, etc? all custom made?


Good questions.

AC: AC is NOT in the van currently. My hope was to modify the stock LS/truck compressor bracket and use the truck compressor in the stock/LS location but it's going to be tight. Custom lines would have to be made (coldhose.com) but the stock drier/condensor should work fine. Plan B is to use the Holley AC bracket ($150ish) with a new Sanden compressor ($300ish). Holley has dimensions on their site, I just need to figure out what fits. Lower priority for now.

Fuel: Since my van was carbed and not TBI, I had to change the tank to get one with a baffle. If you have a TBI van, you can use your stock sender and just replace the pump! TBI hard lines should work too. I didn't check if the carb hard lines would work, I just ripped them out and replaced them anyway. The baffled tank is technically optional, but then you'd have to run an external pump, which can be noisy.

Power steering: Stock LS lines thread right into the van steering box!

Radiator hoses: Stock van lower hose, slightly trimmed. Stock LS truck upper hose, no mods.



thanks for the response! what are your plans for the stock AC compressor from the engine you pulled? if it was still functioning and not locked up, I may be interested. mine locked up and I would love AC back. it has been unbearable here in SC this summer. lol.

Re: 84 G20 LS Swap Project [Re: JAGI410] #750833
July 22nd 2019 1:23 pm
July 22nd 2019 1:23 pm
Joined: Feb 2013
Posts: 125
Seattle, WA
S
SeattleVanDude Offline
member
SeattleVanDude  Offline
member
S
Joined: Feb 2013
Posts: 125
Seattle, WA
Very nice! if you ever sell it, I want right of first refusal! I'd love to do this to my '93 G 20 some day. 190 HP just isn't enough!

Re: 84 G20 LS Swap Project [Re: JAGI410] #751764
August 20th 2019 1:58 pm
August 20th 2019 1:58 pm
Joined: Feb 2018
Posts: 140
Cedar Rapids, Iowa
Just4fun1991 Offline
member
Just4fun1991  Offline
member
Joined: Feb 2018
Posts: 140
Cedar Rapids, Iowa


Haven't spend more than $50 on the van this summer since reading this first post. I have been saving my pennies and dimes. I have been looking for a LS donor so I can do this. Is there a certain year and above that a person should look for when doing this? 2005 and above?

Since being in Iowa, AC is going to be a must!

Re: 84 G20 LS Swap Project [Re: JAGI410] #751783
August 21st 2019 7:09 am
August 21st 2019 7:09 am
Joined: Sep 2013
Posts: 894
Indiana
tuner4life Offline
old hand
tuner4life  Offline
old hand
Joined: Sep 2013
Posts: 894
Indiana
There is a guy on FB (Chad Higgs) doing an LS swap in his and he says that he used the "mini a/c compressor kit from Dirty Dingo", and it fit just fine.

Screenshot stolen from FB:



[Linked Image]


[Linked Image]
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