How much BOOST on a LQ9??

Reply Subscribe

Thread Tools

Search this Thread

Dec 26, 2012 | 07:56 PM

#11

Beatdown Z

Laid Back

iTrader: (18)

Joined: Jan 2007

Posts: 2,389

Likes: 10

From: Newark, DE

Turbo or Supercharger?
What cam do you have in mind?
E85 or Gasoline?
Meth injection?
Mileage on the shortblock?

Dec 26, 2012 | 08:00 PM

#12

kyle's v

Thread Starter

Launching!

iTrader: (4)

Joined: Apr 2011

Posts: 285

Likes: 1

From: Arkansas

Quote:

Originally Posted by Beatdown Z

Turbo or Supercharger? Turbo
What cam do you have in mind? Nothing crazy really
E85 or Gasoline? Gas
Meth injection? Possibly
Mileage on the shortblock? If your reffering to my LQ9 it has 7,000 miles on it.

..........

Dec 26, 2012 | 08:05 PM

#13

TurboBerserker

I AM A MOTHERF*CKER

iTrader: (1)

Joined: Aug 2004

Posts: 7,132

Likes: 1

Quote:

Originally Posted by kyle's v

That's why I was thinking some stock 317 heads. I see that people boost LQ9's so with stock CR I should be in better shape.

You will need to run 317's to do any boost at all.

With stock 317s and LQ9 pistons, your CR will be 10.1:1.

The most you can probably safely run will be 12-13 psi, assuming: meth, no FMIC, awsome in person / dyno tune.

I'd run 10psi personally and have some fun.

You could always have the heads opened up a bit, but running the flattops will always be the limiting factor.

Dec 26, 2012 | 08:24 PM

#14

kyle's v

Thread Starter

Launching!

iTrader: (4)

Joined: Apr 2011

Posts: 285

Likes: 1

From: Arkansas

Quote:

Originally Posted by TurboBerserker

I figured 10psi would be good with stock 317's BUT that doesn't give me any room to grow down the road

Dec 27, 2012 | 07:09 PM

#15

silver-mod-o

Hunt&Fisherator

iTrader: (15)

Joined: Nov 2005

Posts: 14,314

Likes: 17

From: SETx

If you want more you're having the chambers opened up and/or swapping pistons... Just reality with flat tops.

Dec 29, 2012 | 09:51 AM

#16

Beatdown Z

Laid Back

iTrader: (18)

Joined: Jan 2007

Posts: 2,389

Likes: 10

From: Newark, DE

10:1 6.0 + Ported heads + FAST intake + good cam + good flowing turbo(s) + 11psi = 800rwhp...

Quiks twin turbo silverado on 11psi = 767.7rwhp - YouTube

Jan 2, 2013 | 03:53 PM

#17

RedRover

Staging Lane

Joined: Sep 2012

Posts: 91

Likes: 0

From: Longview, TX

i would look into maybe tradin your lq9 shortblock for an lq4 shortblock, but keep your arp rod bolts. so you don't have to do the work of swapping pistons