Sonomajoe

So I have a Rebuilt LQ9 with a carb intake and no EFI gear right now...

Is it possible to install a CTS V Supercharger onto a LQ9 if I switch to EFi?

If so What would I need besides throttle body, Harness, ECU and injectors, which accessory drive would be needed and could I fit it In a 72 El Camino/Chevelle?

Also would it work fine with a LS6 cam or would I need to do a cam swap and would it be compatible with 317 heads?

Also is there a real issue with them shy of "annoying noise" and is it really that bad on a old school muscle car, or just annoying on a high end luxury car?

And last but not least what kind of power do you think I'd make with a LQ9 with appropriate mods to make it work right?

Thanks yall

garys 68

iTrader: (1)

Kinda looked at the same thing in the past.
Issues, LQ9 has kinda high compression for optimal boost.
The 317 heads are cathedral, LSA is rectangle. Not sure what the ramifications of that would be, but probably makes that a no go.
The LS1 (LQ9) or 6 cam would be great with boost (wide LSA).
Accessories will need to be changed but that's doable.
Long story short, your LSA project will cost more than you already have in the motor.
You might consider an aftermarket 5.3/6.0 truck blower especially if you can find used with a lot of the other stuff included. That package should still fit under your hood.

moeZ28

iTrader: (7)

Low compression for boost is a myth. You can run boost on higher compression with a good tune as long as you can control timing and detonation.

gnx7

iTrader: (28)

some info for you:
https://ls1tech.com/forums/forced-in...ort-heads.html

garys 68

iTrader: (1)

Agreed in one respect, especially in reference to old carbed, roots blower motors.
But given street octane ratings, blower size/speed/and efficiency, there's a reason the 6.2 LSA has 9.1:1 CR. Put that blower on top of a smaller 6.0 LQ9 with 10.5:1 CR you would probably be losing efficiency. A smaller blower might be a better combination with an LQ9.
Regardless, I doubt the OP will go that direction.

moeZ28

iTrader: (7)

The reason is because its safer for the general public that way.

moeZ28

iTrader: (7)

My Iron 6.2L is 11.2:1 and is setup for a procharger. As soon as I can fund it, it'll be on there.

A friend of mine has a 12:1 Turbo 347ci LS1 that makes 1073hp around 23psi with an 80mm S480, and a 231/227 cam. This is through a stalled auto. Car ran 8.92 @ 159.6 mph on 18psi last year.

I have another friend running a stock bottom end L99 (auto LS3) 2010 Camaro SS with a D1SC Procharger, 224/230 cam, stock heads, stock intake, that makes 690hp and turns low 10's, and has ever since the car had 3k miles on it. Its got over 40K now. he drives it pretty often and when he goes to the track he beats the **** out of it. 12-20 passes every weekend between april and November.

All Im trying to say is a stock LS motor is fine for boost. whatever motor, whatever compression. it doesn't have to be a low compression motor.

garys 68

iTrader: (1)

moe,
I agree with you.
Looking at it in terms of generating the same cylinder pressure with low compression/high boost vs. high compression low boost. Given a single blower size, you can end up with blower too big in the latter situation, with little boost in lower rpms. Same is true for turbos, right?
And given the OP questions, I don't think a 23psi is realistic for his intro to blowers.

moeZ28

iTrader: (7)

Im not saying it is...What Im saying is for what hes doing, a stock motor with stock compression would be just fine.