I know the majority of the pro/cons of each motor but mod for mod which motor comes out on top? If you could somehow run 26psi through a f-body could it compete with a supra?

 

Forged internals... Ls1.

No replacement for displacement.

How many Ls1s have you seen @ 26#? How many Ls1s have you seen making stupid power?

An Ls1 on just 15# can see an easy 600-700Rwhp+.

 

dont even need that much....

LSx's are performance motors that actually perform..

the 2jz while it can produce well over 1000hp.. is just a dyno queen.


worlds fastest super runs mid 7's

theres a few camaros running 7's out there..


1000hp supra vs turbo camaro... video speaks for itself

 

I have seen many making stupid power up close and personal. I have also seen many of these monsters get totally dominated by a close friends 98 supra. I just don't see how they are making such ridiculous numbers out of such a small motor

A supra with BPU's makes 440-500HP depending on tune and of course shape of the car.

I guess basically what i am wanting to know is there any way to compete with these monster imports while keeping streetability?

 

Nice thanks for the vid. I guess the reason i thought they were so fast is due to seeing so many involved in roll races.

 

Don't be silly.

Supras can run hard, just depends on what the owner wants.

 

Absolutely.... More cubes and/or a power adder.

There is no replacement for displacement.

If you want 800Rwhp and keep it driving as close to tame as you can, do a turbo build.

 

And to top it all off there more streetable than most v8's with similar power.

 

I'm picking up my first f body next monday im getting a 2001 ws6 trans am 62k miles very sharp car. Some day down the road i would love to have it making stupid power either turbo or s/c. Hopefully with loads of careful planning i can build it up to be a snake slayer and supra smasher

 

Because they usually are built for two completely different things.

A larger d car can always make more power more streetable than a smaller cubed car.

You are comparing fbody cars chasing an ET (hurts driving manners) against supras after a mph/roll racers (that can retain driving manners).

 

Is it possible to pull off some good et's on a fbody and still walk away from most cars in a roll race?

 

Absolutely... You don't run 9/10s/etc without getting the mph to boot. A 150mph car is a 150mph car.

Larger displacement shines everywhere.. You get the torque down low and it doesn't run out of steam up top.

 

2JZ+fiddy shot a nas

 

You can get far better driveability/economy from a 1000 hp LS engine than a 1000 hp 3.0L. All depends on the camshaft/build. A small motor built to rev and only be under mad boost will not idle,drive or spool worth a damn compared to a similar hp 6.0. I have seen some of them barely run at all under 3500 rpm. With the massive hogged out heads and stupid profile camshafts some just break up and sputter until the motor starts pulling enough air through it to run. Did I mention the injector shortpulse tuning as well? Try tuning 1000cc injectors to idle on a 3.0 motor.

A 6-700 hp Supra IMO runs way better on the street than a 900-1khp one. Yeah it may make 1000 hp but for how long? What rpm? What gear does it actually load down and go? Unlike V8s those motors are boost dependent 100%. When not under efficient boost they are just 3 liters. In terms of useable/streetable HP, turbo V8 takes the cake.

Granted a small engine with an oversized turbo will shine in one spot. I would rather it hit hard and shine all over. Not just for 1 gear at the top of the powerband.

Bottom line more displacement + boost is always better as long as you are doing it efficiently. (proper size turbo for application) Most problems with turbo LS engines comes from not enough exhaust wheel on the turbo. Yeah it spools right up but falls on its face at 5k when it starts making decent power. It is really all about CFM not boost. Most people look at intake pressure as power when they need to be looking at CFM or pounds per minute that actually is going through the engine.

Speaking in these terms what is better air pump? A 6.0 at 7k rpm or a 3.0 at 8k?