Hi all

I have Lumina coupe 2003 same as GTO 2004 exactly. i want to modify my car completely so i need custom ls1 long block or complete with 550HP minimum custom 4l60 that can handle this engine also differential & axles and don't forget the suspension parts that should be changed because i need all this power go to the tire perfectly without a lot of wheel hop.

What you recommend no problem for big names or not but a good price for value

Thanks

 

my car is DD

 

I'm guessing you're in Australia, so I would definitely work with someone there. As for your goals, it's gonna be hard to reach 550 crank hp on a stock displacement ls1 and still be DD friendly. Go with a 400+ inch stroker and good heads (AFR, TrickFlow, etc), and you can hit that pretty easy.

 

if you are going to build a motor get more cubes.

if you are in Australia- get the APS kit to go with the new motor and you will have 550+ reliable HP.

Then all you have to worry about is getting it to the ground.

 

DD and 550 RWHP? that is a tall order.

Yes LS6 motors can achive 550 rwhp on NA but not as a daily driver. a pure race engine, with light wt rotating assemblies, great heads, cam, dry sump system. Light wt clutch and drive shaft. Heavey duty trans and diff.

Plus a coil over suppension system to help.

Might as well take out one of the engines out of Holden Super V8 race cars.

 

DD LS1 factory displacement and 550rwhp?
Not happening it would have to be a race motor!
Now if you take an LS1 hone it out to 3.903" and stroke it to 4.000" to get 383ci might get you there N/A but i dought it.

 

If you didn't rule it out, I'd look into superchargers. That'd be the best way to make it 550 hp and still daily driveable.

 

550 rwhp NA, DD, and stock cube...forget about it...

You didn't mention the $ you want to throw in it!!!

Christian

 

Where did he say RWHP?? 550fwhp souldnt be a problem at all..everyone on this site makes that..well, almost everyone.

 

Hi guys

am not in Australia also i didn't say that i need heads or cam, i want long block or complete engine and i didn't said stock displacement any engine but i need it ls1 so it will fit my car without modifications
so what shops or company's can do it and what is there sites

thanks for replaying

 

heads/cam and some spray should get u 550rwhp!! but you would definitely need to beef up that tranny before trying to push that much power.

 

Location: SA

saudi arabia????? btw unless you already have a good set of flowing heads and a big cam you might just want to supercharge it

 

Thanks for replaying

but i don't like spray and as i told u i need long block or complete engine ls1 ready to install

 

the car al ready has 415rwhp with heads cam & 42injectors but i need a new long block & complete engine other than mine of course with big stroker heads & cam but i want a custom shop that install all parts & guarantee the HP

 

speedinc...........

 

to hard without power adder or big ci

 

wow these threads get started at least once a week..

we should just make them all stickies

 

i know it will not come without big cubic so what u advice me to get long block ls1 wtih more than 550hp natural aspirated no matter of size ci

 

Thanks for this site but do u have any info about 4l60 & differitial modifications

 

We can set you up with a mild manner'd 402+ inch motor.

for built 4l60e's check out FLT's transmissions that we sell.

http://www.ls1speed.com/catagory.cfm...y=Transmission