Carbureted LSX forum - What will a stock LQ9 do? Here's what.

A little disclaimer: this motor's internals are 100% stock, and as a matter of fact, has never even been apart. The only mods are bolt ons: headers and a carb and intake.
http://i40.tinypic.com/3467wwx.jpg

Nice :) Change the cam and you should be able to get into the 11's :)

What does the car weigh? Great results, congrats. Eric L

What does the car weigh? Great results, congrats. Eric L

Stock I think they were about 3500-3600 lbs curb weight.... plus driver... Not sure the difference between the 3.8 with turbo and the lq9....

Bruce

So I guess you got that transmission problem worked out?

Just curious what you did with the turbo 3.8?

It is a fairly heavy car - I've got it down to 3500 or so (with me in it).

Tax refund = race 700R4. A new pair of drag radials helps A LOT too.

Before you spend money on a 700R4, look into a 200 4R, My opinion is that when built, they are the superior OD auto.
If you dont need the OD, just build a th400 and save yourself alot of greif.
My LY6 6.0 (I know, different heads...) in stock form with the carb/headers, ran 12.59 @ 109 in my 3425 camaro, so your results are very much in-line. I am sure there is more in your with fine tuning.
Barrett

I'm with 3pedals on the tranz unless you making a ton of power or want something to take a punishment then go 4l80e.

Wow 3500 with you in it either you have lightened things a lot or your a pretty light guy ;) (Most are light compared to me..... and my 290-300lbs)

Bruce

Cool, if my LQ9 runs good in my fox body, I'm thinking of putting one in my T Type. It weighs 3550 with me and turbo v6.

As far as trans goes, I would look at a 4l80e. I'm on my third 200-4r, built by reputable builders. It's on its way out now. Only a mid 11 second car. Since I never drive the GN, its going to get a th350, next time.

Good luck

Thanks guys, the 700R is done and in. I did a LOT of research because I had a 200 4R here in my garage. The 200 will go into OD at WOT, and has a closer spacing of 1st and 2nd gear. Based on what I learned, neither is strong, both can be built strong. Tossup.

i've also been told that a 200 4R will be stronger, built.

When I put the car together last summer, I made a crossmember for the 700 and had the driveshaft cut for the 700. Now the exhaust goes around that crossmember (long story).

To change trannys would have meant getting three other components changed, so that factored into my decision.

It will be fine if it's built well.
You have any plans for the engine?

Well, you all know that some people fixate on peak HP on dyno pulls. I am more interested in ET and torque. I don't want to overpower the suspension/traction the car gets.

Future plans include a stronger rear end (Strange?) and a cam and valve springs. I will keep the 317s because of the torque and velocity they offer. I think I will be happy running one 11.99 once.

11.99, lol, w/ a reasonable cam it will go low 11's at about 117.
You will not be disappointed if 11.99 is the goal:-)

congrats....

Very nice, and you will blow 11.99 away with a cam!

Hot damn I can't wait to get my Lq9 running, gonna have to take it easy on the Saginaw 4spd, with these things putting down numbers like this in stock form.

Sweet car by the way i'ma huge GN/T-Type fan

what converter? i had a 3600 stall. headers stock ls1 in malibu wagon ran 12.09 It had a lot of weight out though.

Very nice man, I really like your ride, but damn, make a old small block guy jelous all day, junkyard long block, mid 12s? Lovely. To compare, my stock lq4, heads milled .030, trex, t56, at 3450 w me in, 7.1 at 97, so a 10 mph gain over yours in the 1/8th, cam only with a manual, wish I knew what it would do with a auto, Trans brake equipped and the right converter? I cannot out shift a auto, so there is surely more to be had with a setup like yours, make sure you keep us posted!

I'm on a budget so I got the tranny rebuilt locally and they said they could include a new, stock convertor in the price. The stall is 1800-2200.

Grats on the time. But a stall alone should get you close to that 11.99 :). Cam AND a stall....low 11s easy like barret said.

12.3 @ about 109 at the track tonight.

Was matched up against a modified 2002 Trans Am - no problem
then
Was matched up against a brand new ZR1 Corvette - PROBLEM! He must have had juice - he ran a mid 11 @ 126
(video below)

12.3 @ about 109 at the track tonight.

Was matched up against a modified 2002 Trans Am - no problem
then
Was matched up against a brand new ZR1 Corvette - PROBLEM! He must have had juice - he ran a mid 11 @ 126

Your car is really getting it done. I just love these engines. As for Vette, if it is an actual ZR1, he does not need "juice". They are just that fast.

There's a stock zr1 on here that went 10.49 with drag radials. Cam ,converter, and a little spray you can be there with him.

http://youtu.be/SCwZoIXeFCI

http://youtu.be/SCwZoIXeFCI

Those GN's have 8.5" rears correct ?....built, they are strong as a 12 bolt.

Get an Eaton posi, some Yukon gears, and a pair of Moser axles.....all said and done.... cheaper than a Currie/Moser/other rear.

Good to see the GN pick up some more!

A 8.5 10 bolt is not as strong as a 12 bolt, but it is not much weaker.

But a cold day in hell a 640 HP supercharged ls9 cannot beat a carb only 6.0 in a car that is equil weight with competant drivers, you still gave him hell off the line!

Its a clone so it actually has a 7.5 in it :eek2:

I've got to wait until I save $$$$ to get a rear - prob a Strange S60

A S60 is overkill, I like the moser or strange 12, the 9 inch is better but not worth talking about for a street car, hell, LMR was running 7.5 in the 1/4 with a 12 bolt so I do get rather tired of the 9 inch is so much stronger than a 12 arguement. Lol

GNCLONE, tell us more about your car. Is it stock suspension? I'd say your car runs very well in the quarter mile. Just wondering if your engine has any help. :)

I like the Dana 60. I run 1 in my camaro, and it has been indestructible.

My car is mostly junkyard parts - it is an extreme budget build.

It has the stock 7.5 rear (this is a clone car)
it has 3.23:1 gears from an early 3rd gen T/A with factory Auburn posi
it has upper control arm relocators (people call them anti hop bars)
it has Mickey Thompson 255 50 16 Drag Radials
it has a fresh TH700R4, with Corvette Servo, better bands and sun shell
very mild new converter 1800-2200

The engine has a Holley 670 single pump dual feed
an Edelbrock/MSD Performer RPM combo
Pacesetter long tubes
3" X pipe down to 2.5" dumps
165 deg thermostat
overkill fuel supply and overkill electrical system

It runs where it should if you ask me. Between the weight, deep first gear inthe Trans, that motor is a torque monster as is, then you aded superior flowing induction, better exhaust, and it will only get faster from here.

It runs where it should if you ask me.

I agree. And it sure is impressive. I owned 2 Grand Nationals. They are a legend, yet here he is with a stock truck motor going every bit as fast as a full bolt on and chipped GN did. LS FTW!

I had an empty engine compartment for about a year, after scrapping the n/a v6.

I narrowed my choices down to a SBC 383 stroker, a Buick 455, or an LQ4/LQ9.

I did a LOT of reading/research and came to the no-brainer conclusion that everyone else here already knew - these engines make crazy power for cheap. A know a guy with a BUILT big block Chevy (big $$$) in a car similar to mine. He is not too happy that I am running faster than him :nono:

I know a guy with a BUILT big block Chevy (big $$$) in a car similar to mine. He is not too happy that I am running faster than him :nono:
Lol, that sounds familiar

Maybe it runs where it should but I find this amazing. Gives me the itch to get started on my 69 Camaro LY6 conversion. My car is set up more as a handling cruiser than a quarter miler but this is encouraging. Hope mine runs this good! :hail:

Lucked out and found a wrecked Escalade about 20 miles from me.

The LQ9 is a bit beefier than the other 3rd gen truck motors. Better rods, higher compression.

Yep, upside to the common lq4 is the dish helps for PTV clearance.

Hey GNClone what county are ya in....i'm over in Lakeland.

I'm in Volusia - takes about an hour to get down to Speedworld. You guys have an eighth mile track in Lakeland, right?

Apparently there is a new 1/8 mile track right near the Orlando Airport, mostly imports there?

I have never been to the lakeland track, but I hear they are fixing it up right now. I might make the drive to check it out.

I can make the drive down to the Lakeland track one of these days - I know its open b/c I saw some promotional stuff recently.

yeah the 8th mile is still a little rough but they are cleaning it up a bit. Actually seen some decent cars recently. Cool thing about it is you get to make as many runs as you want basically.....

The problem is if my 7.5 decides to grenade while I'm in Lakeland............

7.5 in a gn??? should be a 8.5 if it's stock....

Its a clone car. Eric L

I'm going to save up and get a cam and springs for it this summer.

I'll probably not do a stall for a while, I had such a hard time getting the exhaust in and out last time I had the tranny out. When got the exhaust system, I told the guy at the shop "Use some flanges and bolts somewhere so I can get it out later." He did, but the joints are not on a parallel portion so picture me laying on my garage floor using a hammer and 3 cans of PB blaster!!!:bang:

Do a small cam, like a hot cam, ect, you would love it, unless you are really going after some maxim performance and time slips, otherwise, a larger converter will be a must, ect ect. Sure you cannot wait!!!

Yep, upside to the common lq4 is the dish helps for PTV clearance.

dish on the LQ4 does not help with PTV. the outside of the piston head is still the same height as an LQ9 piston, and will still hit the valve.

dish on the LQ4 does not help with PTV. the outside of the piston head is still the same height as an LQ9 piston, and will still hit the valve.

I have that problem with my L92 heads and thier large intake valves, but would the small valves of an LQ9 cylinder head (317 im assuming) have that problem as well? Eric L

dish on the LQ4 does not help with PTV. the outside of the piston head is still the same height as an LQ9 piston, and will still hit the valve.



Yes and no, from my experience checking ptv with my cathedral heads, yes, from seeing the mammoth ls3/l92 head valves, not so much.

Yes and no, from my experience checking ptv with my cathedral heads, yes, from seeing the mammoth ls3/l92 head valves, not so much.

True that. My Piston to valve clay check on my L92 heads showed the valve ALMOST to the edge of the piston. Eric L

If you are on a serious budget, I would go with an 8.5 10 bolt. just weld the axle tubes(use hi nickle rods or wire) a set of summit axles, factory style limited slip( make sure it is good. they dont make rebuilt parts YET) and gear it for your intentions and you are ready to go. Should hold 500+HP at the wheels with no problem and they free up a little HP to the wheels. Just my .02.
By the way GREAT NUMBERS!!!!!