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Re: 84 G20 LS Swap Project
JAGI410 #750693 July 16th 2019 10:43 pm
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What a great project! You did an awesome job and I’m sure it drives really nice now

Last edited by Deathorvictory; July 17th 2019 12:50 am.

1987 B250 - Painkiller
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Re: 84 G20 LS Swap Project
NEmery #750712 July 17th 2019 9:00 pm
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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 11:36 pm.

Jason
2008 Ford E-250 4x4
1984 Chevy G20 5.3L/4L60E (SOLD)
Re: 84 G20 LS Swap Project
JAGI410 #750716 July 18th 2019 2:34 am
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Did you disassemble the motor in any way to refresh it?


1987 B250 - Painkiller
Re: 84 G20 LS Swap Project
JAGI410 #750720 July 18th 2019 10:21 am
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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
Death or victory #750729 July 18th 2019 11:34 pm
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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
2008 Ford E-250 4x4
1984 Chevy G20 5.3L/4L60E (SOLD)
Re: 84 G20 LS Swap Project
JAGI410 #750730 July 19th 2019 12:06 am
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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
JAGI410 #750792 July 20th 2019 8:25 pm
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That's a great fit. Your homework paid off for sure. Congratulations!

Re: 84 G20 LS Swap Project
JAGI410 #750828 July 22nd 2019 8:10 am
Joined: Oct 2015
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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
JAGI410 #750833 July 22nd 2019 2:23 pm
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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!

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