76mm turbo lq4 69 Camaro

[snowhunter87]

Ok Fellas, updated post:


I finished up the 70 LS1 Swap, turned out pretty good.





Now I am on to my 69 that I had planned on putting a 60K mile 5.3 in but i broke the balancer bolt off in the crank shaft, so now it's got my 130k mile 6.0 in it. I need your guys thoughts on a couple things, here's what I currently have done:


1969 SS Camaro
fresh 12 bolt posi w/ 3:73, welded axel tubes, bigger axels.
beefed up driveshaft and u joints


2004 LQ4
stock 317's with fresh valve job
LS6 243 .550 valve springs
trunion upgraded stock rockers
04 LS6 5308 Camshaft
trick flow 7.425 pushrods
ARP head bolts
LQ9 Headgaskets
Melling 10296 oil pump
Holley 550-602 HP Efi
LS1 intake manfold, stock tb
60# injectors
LS2 timing chain




Stock t56
Stock clutch


I need advice on whether or not my 76mm On3 turbo is going to work for this motor. I have been told that it will be too small for my displacement and will make a bunch of noise but no power. My HP goal is 500-600 to the rear wheels and daily driver compatible.


I will be making my own turbo manifolds out of stock ls manifolds, probably a stock LS1 f-body drivers side for pas side up and forward, and a trailblazer ss passenger side down and forward(drivers side) because it has to go under my remote power steering pump pulley.


I also need advice on what turbo parts would be a good fit for my build:
Intercooler
hotside and coldside piping diameter
wastegate
bov
what clutch to run
build or don't build trans now?
anything else i might be forgetting?? thanks fellas.
here is the car as it sits now.



























'69 ran 9.10 @ 82 mph in 8th mile on NItto Invo street tires at Sturgis SD Speedway the last weekend of June 2015.

[snowhunter87]

anyone?

[ejh532]

Got a very similar build I am working on at the moment. Just curious if you ended up going with the set up you posted? and how well did it work out? any info would be awesome.

thanks man!

[snowhunter87]

Got a very similar build I am working on at the moment. Just curious if you ended up going with the set up you posted? and how well did it work out? any info would be awesome.

thanks man!

Yeah dude, actually under way with the turbo build. Took me a minute to aquire parts for the build. I've got a build thread going over on LS1 tech right now. Basically, at this point I've got my hotside all tacked up, turbo mounted, ic set in the car tonight. Waiting on fuel lines, coldside piping, and other misc parts. I'll try to keep this post updated. Here's some pics of the progress.
https://goo.gl/photos/doHGr3zxJ1frWuFU6

Hit me up if you have any questions. Next I need to get my wg mounted in the merge, get the coldside built, redo the fuel lines, rails, and regulator, put in my new clutch... basically I've got alot left

[F-Body International]

If it's too small, you could pick up another turbo.

From what I've looked at with regard to these turbo's, it's mainly the exhaust side that's "small" for V8 engines but don't take my word for advice. I'm not a turbo professional. A lot of people say stuff that spreads like wildfire on the internet like it's actual fact. These On3 turbos were mainly designed for mustangs and camaro so you should be fine.

[snowhunter87]

If it's too small, you could pick up another turbo.

From what I've looked at with regard to these turbo's, it's mainly the exhaust side that's "small" for V8 engines but don't take my word for advice. I'm not a turbo professional. A lot of people say stuff that spreads like wildfire on the internet like it's actual fact. These On3 turbos were mainly designed for mustangs and camaro so you should be fine.

Right!? So true!

Question for anyone following: I am running the Holley Hp Efi 550-602 standalone setup and am wondering what I need to get from Holley to utilize the built in boost control function? Is there a boost solenoid, aux harness, ect. Thanks in advance!

[Centerforce]

Progress looks great! What A/R is the hot side of your turbo? Also what clutch setup did you end up going with?

[snowhunter87]

.96ar hotside, .80 coldside I believe, I ended up snagging a cermaic Monster clutch off the forums with 300 miles on it. Single disk rated at 850hp so it's probably gonna chatter like a mo fo, but I'll make due until I can afford a twin disk.

[Centerforce]

.96ar hotside, .80 coldside I believe, I ended up snagging a cermaic Monster clutch off the forums with 300 miles on it. Single disk rated at 850hp so it's probably gonna chatter like a mo fo, but I'll make due until I can afford a twin disk.

If you decide to go dual in the future, give us a shout!