TDP

iTrader: (23)

I have a lot of experience with just about everything else, but have never really messed with turbos, and have never had a turbo car until now.
Just picked up a Camaro SS with a 60mm STS turbo kit on it. Has the "small" spring, and the guy said I should upgrade it to the bigger one. I would like that cleared up for me...lol

Now, the main question that I have is if I have a good combination of parts to achieve my goal. The Camaro has a knocking 150k LS1 motor in it currently. So I need to change out the motor. I'm not planning to ever make over 500rwhp. I just want to keep it mild, so I don't have to go and spend a lot of money on forged internals, fuel system, etc... Basically, I don't want to waste money on doing an over-kill on everything like I usually do.
I found an LQ4 6.0 with low miles. I plan to simply change out the piston rings with plasma-moly ones, then install a Z06 cam (or maybe a bigger cam?). The old 5.7 LS1 in the car now already has a Z06 cam, chromoly pushrods, and 918 springs. The car made 462rwhp with stock heads and stock LS1 intake. Maybe the bigger 6.0 engine with the better 317 heads and a LS6 or L92 intake will get me to 500rwhp? I heard the LQ4 has 9.0:1 compression...is this true? Also will the 7.40in pushrods work with the LQ4?

Any suggestions? Does this sound like a good combo?

Ryans99ls1

iTrader: (16)

dont go turbo if you dont want 500+ whp.. get a rebuilt ls1 throw a nice set of heads on it with a matched cam and ported fast intake and youll see 460whp, all only needing walbro fuel pump and 42lb injectors for fuel. which could all be picked up for not too much more money if you sold the sts kit..

on another note, you could just throw the lq4 in there and play with boost.

LS1NOVA

iTrader: (12)

If your happy with the power it has now then just rebuild the LS1. If you want more power then upgrade to the 6.0 and also upgrade the turbo to something a little bigger. Its already about maxed on the 346.

lavoy

iTrader: (2)

what he meant is the waste gate has a small spring in it, like say 6 psi or so, putting a bigger spring in it refers to a spring that will make more boost. you can also just add a manual boost controller to turn it up. my bone stock ls1 made 510 whp on a conservative tune and 9.5 psi to give you a reference. not sure on the push rods or compression.

TDP

iTrader: (23)

That's not what I meant. The car already has the STS kit on it and I'm surely not going to take it off!

I just don't want to have to upgrade a bunch of other parts to handle the power. If I can safely make 550rw with the 6.0 then I'm all for it. I just want it to be reliable.
The car already has the Walbro fuel pump. The reason I want to go with the 6.0 is that I won't have to rebuild it. All I have to do is install some good piston rings. Also this 6.0 has lower compression which would work better with the turbo.
How much boost can I reliably get out of a 6.0 with 9:1 CR? and how much rwhp?

lavoy

iTrader: (2)

boost is irrelevant, psi is just a measure of a engines restriction, 10 psi on a 16 g turbo(small turbo) will make far less power then 10 psi on a gt35r(medium size turbo). so the real question is how much power can the stock rods and pistons handle and on what octane fuel. on a ls1 the general rule is 500-550 on stock stuff and pump gas. but there are freaks that go higher and lemons that break sooner. also the quality of the tune is going to be a factor. the bottom line is either motor you go with will make 500 on pump gas so just go with the one you want.

1fast bird

iTrader: (22)

Put the 6.0 LQ4 in it with upgraded springs,cam and injectors. Sell the 60mm for a mpt70 and have fun. Since the LS1 is knocking it sounds like a no brainer. If I had money for another car this is what I would build for the street. Simple and been in a 5600 lbs.+ truck with this combo and it was alot of fun! A car with 2000 lbs. (1ton) less weight would be enough power at less than 10#'s IMHO...

Oh, this combo lasted a long time in my buddy's truck on a good tune

Busy Mopper

iTrader: (4)

hell ya i didnt knw u got daniels car im happy for ya

MeanYellowZ

iTrader: (19)

Forget about the rings. The stock pistons will go before you have any issues with the rings. At the power level you are aiming for, install the engine, Z06 cam isn't a bad idea....throw it in and go

TDP

iTrader: (23)

I just picked up the LQ4 yesterday and now I'm debating whether or not to get the heads resurfaced, block decked, cylinders bored out, etc. Then I'd need new over-sized pistons. Might as well do all new bearings while I'm at it.
Dammit, the money pit starts again. This is my 10th "fun" car (8th f-body) in the last 10yrs...lol..

I know right where this is headed.

TDP

iTrader: (23)

Yup I ended up trading the 03 CTS for it. The SS went to a good home