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Old 06-03-2017, 09:31 PM   #1
blueday
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1979 LS3 Swap....it's begun

Thanks to you guys here who have posted and a few guys I know I've started this project. I just sold my perfectly good drivetrain to a local C3 guy (383 stroker motor (with a bunch of goodies), TCI th350 trans w/b&m stall, OBX side pipe headers (kept sidepipes and mufflers for LS engine).

I'm planning on the LS3 525 crate motor with a 4L70e trans and stall. I'll also be going installing a vintage air setup along the way.

Here's some pictures from a few days ago. I'm waiting to hear back from a vendor before ordering the new setup. Hopefully I'll get it ordered next week and get some stuff moving here.

Out with the old....








Last edited by blueday; 07-21-2017 at 02:28 PM.
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Old 06-03-2017, 10:17 PM   #2
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Good luck with the swap
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Currently 93 Ruby 40th Aniv Drop Top/6-Spd

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Old 06-04-2017, 07:38 AM   #3
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Consider me subscribed! Before you pull the pin on Vintage Air, you really need to look into Classic Auto Air beforehand. TXV metering, larger capacity evaporator (not siamesed) and the DER controller that takes the place of the stock clunky HVAC controls?
Yea baby. Perform due diligence before pulling the plug on Vintage Air. They simply cant touch the Classic Auto Air Perfect Fit series.
That said, your gonna love the swap, EVERYTIME you get behind the wheel!
Im running a blown LS with a beefed 4L60e, 3600 Vigilante billet and 3:73 cogs.
More fun than GM ever envisioned for a C3 Corvette!
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Old 06-04-2017, 09:02 AM   #4
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Good looking car.
Going to be killer with that LS3.

What trans mount/motor mount combo are you going with?

Subscribed.
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Old 06-04-2017, 08:28 PM   #5
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Man, I wish someone around me would want to get rid of their perfectly good 383! Good Luck with the swap.
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Old 06-07-2017, 05:08 PM   #6
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Quote:
Originally Posted by Patro46 View Post
Consider me subscribed! Before you pull the pin on Vintage Air, you really need to look into Classic Auto Air beforehand. TXV metering, larger capacity evaporator (not siamesed) and the DER controller that takes the place of the stock clunky HVAC controls?
Yea baby. Perform due diligence before pulling the plug on Vintage Air. They simply cant touch the Classic Auto Air Perfect Fit series.
That said, your gonna love the swap, EVERYTIME you get behind the wheel!
Im running a blown LS with a beefed 4L60e, 3600 Vigilante billet and 3:73 cogs.
More fun than GM ever envisioned for a C3 Corvette!
Thanks for the information. I just emailed classic to see if they have any options available for my 79. Not sure what the differences would be besides ductwork. I'm very much looking forward to the LS drivetrain, ac and hearing an LS3 through sidepipes (hopefully it sounds good!)
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Old 06-07-2017, 05:13 PM   #7
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Quote:
Originally Posted by AcidGypsy View Post
Good looking car.
Going to be killer with that LS3.

What trans mount/motor mount combo are you going with?

Subscribed.
I'm looking at custom image at this point for motor mounts and trans crossmember. Waiting on a little further information from them. Same goes for the the ls3/trans setup. I'm ready to order now that all the old stuff is out and sold!
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Old 06-07-2017, 05:19 PM   #8
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Quote:
Originally Posted by M Pete View Post
Man, I wish someone around me would want to get rid of their perfectly good 383! Good Luck with the swap.
That was a fun little motor! Loads of torque and a lot of spinning tires! It was about 10 years old.
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Old 06-13-2017, 11:15 PM   #9
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A little bit of degreaser and pressure washing along with demo of the old ac setup and pulling dash. Engine bay will get some fresh paint and some new wiring harnesses (car had an engine bay fire atsome point and random splices in the engine harness, starter and ac). I think I will really like the additional space in the engine bay though.












Last edited by blueday; 07-21-2017 at 02:32 PM.
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Old 06-13-2017, 11:28 PM   #10
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Quote:
Originally Posted by Patro46 View Post
Consider me subscribed! Before you pull the pin on Vintage Air, you really need to look into Classic Auto Air beforehand. TXV metering, larger capacity evaporator (not siamesed) and the DER controller that takes the place of the stock clunky HVAC controls?
Yea baby. Perform due diligence before pulling the plug on Vintage Air. They simply cant touch the Classic Auto Air Perfect Fit series.
That said, your gonna love the swap, EVERYTIME you get behind the wheel!
Im running a blown LS with a beefed 4L60e, 3600 Vigilante billet and 3:73 cogs.
More fun than GM ever envisioned for a C3 Corvette!
I called classic auto air today and it sounds like they can provide a set up for my 79 and may be able to convert the factory controls or I may just go with their switch/knob controller similar to vintage air. I checked out your install thread and it doesn't look too bad now that everything is already out.

Ryan
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Old 06-14-2017, 04:33 AM   #11
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Looking good Ryan!
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84 coupe & 99 vert
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Old 06-30-2017, 12:10 PM   #12
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I have about 90% of everything bought. Just waiting for everything to come in. Josh at CIC has been very helpful with getting me on the right track with the the LS3/525 ECM and going in the right direction for a harness.

I went with a 3500-3700 stall from circle d. E67 ECM harness from Tilden motorsports. LS3/525 motor and ECM, 4L70E trans, Motor mounts, crossmember for trans, engine accessories, tcm, new wilwood master cylinder and handful of other misc items are coming from CIC.

Here's some updated pictures. I tried my best to clean up the engine bay without going too overboard and ripping everything out. Filled in some holes and painted. I still have some touch ups but came out decent considering what it looked like previously.








souvenir from the old 383....my friend that helped e build the engine has the other.
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Old 06-30-2017, 12:26 PM   #13
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classic auto air system came in last week. Hopefully it performs well and everything looks nicely laid out. Not sure exactly what to think about other than that. The company gave me a "custom kit" since they don't make one for the 79. I figured they would've started with the 68-76 kit and worked out the differences. (which maybe I should've just ordered the older setup and dealt with the differences myself, we'll see) Instead this way I had to make my own block off plates on the firewall. Not that hard and came out clean looking (see below).

I sent back the cheesy looking controller for the system. 1: cheesy looking 2: knobs are too large and you can't see the symbols, 3: way too large 4: goofy way of mounting.

I returned the defrost vent they send because it doesn't match up to the factory defrost and not close to the dimensions I gave for fitment. If they provide something close to the right size for the factory vent duct I can modify to make it work. Not a big deal and expected.

I also had to order some bulkhead fittings because with this kit they give you grommets to route your lines through the firewall. Kinda cheesy looking on this build in my opinion. I wasn't told this when I ordered the kit either.

I called last thursday to return the controller and get some bulkhead fittings and the guy never returned my call. I called the following tuesday and he said he received the controller I shipped back to them and will get the bulkhead fittings and new slimline controller out the following day (wednesday). I had to call again Thursday to check in on the status. I was really hoping to have these parts in by the weekend so I can get this thing tested and installed on the interior side over the 4th of July holidays. It's very apparent I'm going to have to call again today to confirm my parts were shipped. Sigh........






controller:



defrost vent sent (yeah, that's not gonna work):



The vent connections they sent over for the sides worked out perfect for my 79 dash:


the center vent will work just fine. Luckily I kept the factory ducts to modify for the center vents and defrost vents.
factory:


modified factory/CAA:

Last edited by blueday; 07-21-2017 at 03:12 PM.
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Old 06-30-2017, 12:44 PM   #14
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Here's the block off plates I cutout for the old unit and blower. I also had a rusted out plate on the drivers side wiper area I went ahead and made.



Painted up and bolted on along with the slightly cleaned up firewall (still have to clean hinges):



[




Last edited by blueday; 07-21-2017 at 03:05 PM.
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Old 06-30-2017, 12:47 PM   #15
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I'm also redoing the wiring in the engine bay with some braided loom. I think this will last a little while and look nice.



new 79 engine harness with braid loom:

Last edited by blueday; 07-21-2017 at 03:06 PM.
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