snakeskinner1984

I have a 99 trans am with a LS1 with mid-length header VIG 3600 stall. But I got a LQ4 6.0 I want to make around 425hp to 450hp on motor what do I need to do to get there can anyone help me?

Madellous

which engine are you trying to make the power on?

70LS1Nova

heads, cam, headers, intake, injectors, done.

AndyIsLost

iTrader: (1)

LQ4 has less HP than LS1 I believe...due to lower compression. anyone correct me if I'm wrong

V68Sweep

I could be wrong in my rebuttle, but I thought they made the same power, only the LQ4 is iron and heavier?

thunderstruck507

iTrader: (18)

lq4 is low compression, lq9 is higher compression

ls1 will make 425-450 hp just as easy and be lighter, but tq will be just a little lower

are=or

V68Sweep

The iron block has more strength for higher hp numbers compared to the aluminium LS1, right?

snakeskinner1984

Yea the lq9 is around 9.5.1 compression I may be wrong. Are would I be better to put heads intake and injectors on the ls? I got mid-length header are do I need long tubes

snakeskinner1984

H/C/I on the ls1

snakeskinner1984

Are can I just put pistons in the LQ4 to get the compression up to like 10.5.1 which would b better?

Zbinkley

Take your lq4, put some ls6 (243 casting) heads not it. The 243 heads have a 64 cc chamber which will give you around 10.5 to 1 compression. Then ls6 intake and cam and say hello to 425 wheel.

thunderstruck507

iTrader: (18)

Have you priced pistons, rings, machining etc? Rebuilding a lsx isn't really cheap IMO.

I would do a mid size cam, some ported 243/799 (or aftermarket heads), long tubes, ls6 intake on the ls1. Save weight and make the power you want. You would still have to do heads/cam/intake on the lq4 to get to your hp goals.

The iron block is stronger but at power levels of a NA build that doesn't matter. You keep about 80#s off the nose of the car by staying aluminum block and you don't have to tear the engine all the way down, pay machining costs, etc.


ls1> lq4 (unless you a buying pullout engines and building them from scratch)

Head Hunter

iTrader: (14)

425-450 N/A to the wheels with a LS1 is H/C/I/E - not sure about the LQ4

dstappity

iTrader: (2)

http://en.wikipedia.org/wiki/GM_LS_engine


all the info you'll need. lol

snakeskinner1984

All I'm looking for is around 425hp 450hp on motor and put about 150 shot on it. I had a 2000 Camaro with a T-Rex cam long tube headers build transmission with a PTC 3500 stall with 4.10 gears stock ls1 intake and heads and it put down 350hp to the tires. So if I do the h/c/I/e on my t/a it should put me were I want to be. I was thinking of going with the raptor cam this time ls6 stage 2.5 heads if I can do that without flycutting my pistons what you guys think?

firebird99

iTrader: (2)

If your last car put down 350 to the tire then with a 18% drive train loss you were making 413 at the motor and now your planning on modding your new car even futher? You should put over 400hp to the tire with your planned mods good luck

thunderstruck507

iTrader: (18)

Something was bad bad bad wrong with that car.

That combo should have made an EASY 420rwhp and possibly 450+.

LSGUNSS

iTrader: (41)

His 2000 camaro had a huge cam in it with stock 241's and a LS1 intake...limiting factors in that setup. That same motor with better heads and intake is about 425HP at the tires through that stalled auto. That's just my thoughts.

snakeskinner1984

Do you guy know how the Raptor cam will do with stage 2.5 ls6 heads and ls6 intake?

Raptor_WS6

iTrader: (23)

LS1 or lq4