[Matt TuneTime]

Originally Posted by z28camaro2471

So with baselines of 378 at the wheels and 426 at the crank, assuming the same % drivetrain loss, that works out to be 597hp. Work on that tune to get it up to an even 600 hp!!!

Yes I know dynos are just tools for tuning and internet racing but pretty cool nonetheless.

That would be 12% .. It's not possible. Esp when a C5 or C6 is 18% loss .The 2 piece drive shaft will eat up at least another 2% .. the bottom line is the gains are about right but the actual rwhp is way high but typical read from a dynojet dyno .. [ AKA inflatajet ] ..They are only a tuning tool .

Originally Posted by Camaro_Psycho

Wow! Now those are some numbers! That'll beat a GT500, and you'll save a couple thousand. But how do you guys think this will affect the MPG?

You should see a slight gain if the tune is on par ..

Originally Posted by Camarofan123

I have one question, why is the engine moving around so much? Are the motor mounts loose or something? That doesn't look normal to me.

Normal with that amount of tq .. No worries .

Originally Posted by Ninjak

I am more interested in how much the STOCK block can take. Sure, you can get well over 500 rwhp out of a mustang gt as well, but it sure hell is ill advise unless you build the bottom end up some..rods ect....I am sure that the maro engine, that was not built for F/I will have the same limitations....and we have not even gotten to the drivetrain yet.

All in all though good numbers. Expensive as all out, but good numbers. Heh you could buy a GT500 2010 for what it will cost to get you to those numbers.

Hmm on second thought...what I have seen SS's going for here in S. Fla after the mark ups..a GT500 is cheaper !

I have made 550 whp on a stock motor on our mustang dyno [ gives actual or closer to actual power basicly the math works based on engine dyno vs mustang dyno ] We have seen 600+ with a little Meth injection and a conservative tune .

Originally Posted by AH17708

forgive me for the dumb question...but those who dont ask dont learn...so whats the difference between rwhp and hp...how is it that you guys are able to calculate these numbers??

about 20% on a 6spd and 24% on an auto [ 6l80e has a higher power requirement to turn then a 4l60e ]

Originally Posted by classicam

The one big question, IS IT A FORGED MOTOR? I don't see the power going up or lasting with cast pistons.

at that level it will last at least 100K or more if the proper maintance is done .

Originally Posted by blaksabb

So which is it? I have seen on this forum in another thread (forgot which one) the stock RWHP of the LS3 listed as ~ 348. Here they say 376HP or so. That's a big difference. The other thread said 150 + HP increase resulted in about 480 RWHP @ 6 psi. Who am I to believe?

see above post .

Originally Posted by vladkgb

A good pro dyno Tune should be around $300-400

still doesnt even come close to the 2010 rustang gt500 price (32k base SS vs 46k base Gt500). And it makes 636HP (530rwhp+20% Drivetrain loss) vs gt500's 540hp, lol. Rustang = fail

EDIT: go with a procharger, since its pretty simple to bolt on u can save moneys on labor
EDIT #2: and u can bolt it off when its time for warranty work

while we make great power with a procharger the noise level at idle sucks IMO

Originally Posted by THE EVIL TW1N

20% driveline losses

driveline losses are closer to ~12% for manuals, ~15% for autos lil buddy.

see above post thats a little low for even 4th gen cars

Originally Posted by 383ss

I can't believe nobody has asked this... we'll on this site I can.

What are the wheels/tires on there? 18's or 19's with DR's??

1.8X 60' is pretty lame with 530rwhp. (although its not THAT bad as a 'street' setup)

With a good wheel/tire it should go low 11's, easy.

everyone will see once you cross that 1.65 thresh hold in the 60ft wheel hop will start to play a factor then it's time for some pedders action .. I have gone a best of 1.58 in my G8 but average 1.61 .. The maggie makes so much tq at 2600-2800 rpm it's hard to not spin any Drag radial [ I have 5 set's all with different dr's ]

Lastly Nice gains and a nice run the maggie are great as a double duty blower ..