DarkHorse

iTrader: (1)

Looking for either an LQ4 or an LQ9 for my Fox body project, what can I expect from either of these engines with mild mods - cam, bolt ons, exhaust?

Will they make 350rwhp with these mods?

Stock heads, intake, etc...

Thanks

Tunink

iTrader: (3)

I'm more than certain wig bolt one and exhaust you would make over the 350 mark. Cam should put you over 400 or better.

Ravenous T\A

iTrader: (12)

POWER.....nuff said

Joshiedoom

iTrader: (4)

400rwhp with a cam for sure.

DarkHorse

iTrader: (1)

Thanks guys

Here's the deal - ready to buy now and I have a few options

2003 6.0 out of GMC Sierra and 2003 6.0 out of Silverado - i'm guessing these are LQ4's?

Both have 122k and 114k respectively

The other option is a 54k 2005 6.0 from an Escalade - this is the LQ9 correct?

the 2k3 engines are $850 and the 2k5 engine is $1000

LQ4 has lower compression because of dished pistons versus the higher compression LQ9?

Which engine? Are the truck intakes sufficient for the time being or do I need to invest in an intake ASAP?

Sorry for the confusing (newb) questions but i'm completely in the dark on these engines.

Thanks

Jimbo1367

I'd go 2005 if a turbo isn't in the future.

zipster

iTrader: (5)

If you can swing the LQ9, do it, if you are worried about the intake get a used LS1 intake, the truck one is very tall and wont fit under the stock hood. I got a LS1 intake for $30.00, then modified the fuel rail to work. See my Photobucket for info.

Lanaue

iTrader: (3)

2k5 motor all day are these complete motors? Do they come with ecu's?

DarkHorse

iTrader: (1)

Both engines are complete and come with the truck wiring harness. The ECM's I have access to as 2 of my very closest friends are Bryan Herter and Keith who own PCMForLess, so the tune and ECM part is no problem.

This engine is going into my 86 Mustang - currently has a 2 1/2 or 3" cowl hood on it so I should be ok with a taller intake.

The car was previously a turbo 306 and future plans are to go back to running a turbo - however, the pistons and rods would be replaced regardless. I want as much power as I can put out n/a in the meantime so it looks like the LQ9 is going to be the best route - according to what i've been reading.

Stock block 306 w/ 67mm Precision turbo, Redneck C4 with 15lbs boost the car made 525/626 and ran low 10's all day

Here's the car as it sat this year prior to SBF/C4/Turbo removal

DarkHorse

iTrader: (1)

And thanks again for the help guys

Any other input would be greatly appreciated!

knievel

iTrader: (11)

Cam/heads 6.0 and you should be able to easily run 10's

Jim_PA

iTrader: (9)

I just got mine running a week ago, so it still has a long way to go for tuning.

LS2 heads - 243 castings (bumped up CR to 10.5)
Lunati cam 227/231 .651 lift
42lb injectors
stock LQ4 everything else with 78,000 miles on bottom end

It's a BEAST! Puts my previous 350 to shame (around 400/425 hp/tq at the flywheel)

still puts out 35PSI oil pressure at hot idle, and at cruising speed is up around 55PSI

71ANTICARB

iTrader: (23)

What kinda tune do you have in it now those numbers seem kinda low to me for at the fly. I would expect atleast those at the tire with a fairly mild tune.

chuckd71

iTrader: (23)

If you are swapping pistons then you could save your money and get the lq4.

Jim_PA

iTrader: (9)

400/425 is what the old 350 was at the flywheel. I dont know what the lq4 is putting out, but I know it's a lot more.

JMitch19

iTrader: (1)

My LQ9 made 401rwhp 380rwtq. This was with 1 3/4 headers, LS6 intake, and a SLP crank pulley. Other than the listed items it is a stock LQ9. These numbers are through a T56. Cam specs are 228/232 .588/.574 on a 112.

71ANTICARB

iTrader: (23)

Oh got ya.