84 Grand National lq4 turbo swap

Rodknok

Greasemonkey
Jun 14, 2022
210
577
93
Starting my build on my 84 nash. Running the holley mounts and oil pan combo with a lq4 and 4l80e. I'm looking to have boost and keep the ac and heat. I've done some research and it seems most builds delete the ac and couldn't find info on off the shelf turbo manifold options that allow ac. I borrowed a trick Performance t4 log for nbs trucks for some test fitting. Just had a chance to test fit the motor in today. Love the looks of a bug single turbo setup.
20220706_204957.jpg
20220706_205109.jpg
Seems to fit well and the waste gate location seems like it will work out with some cutting of the inner fender well. Also trick make them with v band waste gates as well as the 2 bolt style. I'm thinking the v band will be better as it give you more angle adjustments.
20220706_205133.jpg
. As for hood clearance it's going to be close. I'll test fit that this weekend. Also I found out that a 2nd gen ctsv driver's side exhaust manifold fits nicely in our g bodies
20220706_205551.jpg
20220706_205601.jpg
 
  • Like
Reactions: 9 users

Rodknok

Greasemonkey
Jun 14, 2022
210
577
93
Also another problem I found is that the holley pan is too thin the front to accept a turbo drain. I ended up getting a timing cover with a 10an bung welded on
20220701_152629.jpg
20220701_152635.jpg
added a 90 and 45 degree fittings to make something that will clear the trucks lower ac compressor and put the drain near the turbo. Did require some cutting of the oem ac bracket for the clearance.
 
  • Like
Reactions: 8 users

mclellan83

Comic Book Super Hero
Jun 27, 2017
4,227
9,357
113
Pgh, PA
Looks like you are gonna be having a lot of fun soon
 
  • Like
Reactions: 2 users

64nailhead

Goat Herder
Dec 1, 2014
5,691
1
12,145
113
Upstate NY
Are you aware that you have to rotate the turbo housing? In the one photo the drain is up and and the supply is down.
 
  • Like
Reactions: 1 users

Rodknok

Greasemonkey
Jun 14, 2022
210
577
93
Are you aware that you have to rotate the turbo housing? In the one photo the drain is up and and the supply is down.
Yeah I'm just mocking it up at the moment. Feed up and drain down.
 
  • Like
Reactions: 1 user

64nailhead

Goat Herder
Dec 1, 2014
5,691
1
12,145
113
Upstate NY
I think the fun is a long way down the street unless you mean work=fun then I will be having a ton of that
That's the fun of it. Drives are short distances usually, makes you cherish the time it took to get there ;)
 
  • Like
Reactions: 2 users

Rodknok

Greasemonkey
Jun 14, 2022
210
577
93
That's the fun of it. Drives are short distances usually, makes you cherish the time it took to get there ;)
True true. Months of work for a 1/2 mile test drive. Definitely Deen there before with my nova.
 
  • Like
Reactions: 1 user

Rodknok

Greasemonkey
Jun 14, 2022
210
577
93
Well this might be a problem. The down pipe is going to be ridiculous tight.
20220707_201247.jpg


20220707_201237.jpg
 
  • Wow
Reactions: 1 user

GBodyForum is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates.

Please support GBodyForum Sponsors

Classic Truck Consoles Dixie Restoration Depot UMI Performance

Contact [email protected] for info on becoming a sponsor