belowfire

hey guys building my first ls motor and im going big for the hell of this plus gotta shut up everyone around me with there stock supras who think there gods.

Well lets see got a 2004 lq4 iron block looking to stroker out to a 408
crank,rods, pistons. Ive only found one company that sells them for this set up(link below)
http://www.summitracing.com/parts/ESP-B13402E030/

Heads i was thinking ported ls3 heads

cam( really have no idea what to get)

lastly the roots style supercharger( i want to run 9lb lb of boost and have this motor reliable)
http://www.hawksthirdgenparts.com/pr...-LS3-6.2L.html


this is gonna be my first fuel injected motor, and im looking for anywhere between 600-650 rwhp yes that means roughly 800 at the fly getting bolted two a tremec 6 which has been built to hold all the beating and power of this build
its going in an 84 Trans Am dont worry about the car thats built(30k put into the body all it needs is a motor, also car ways 2884 wit no one in it and no motor)

please dont bust my ***** im just looking for knowledge.

I8UR4RD

iTrader: (16)

you should get parts from a sponsor on the site. why build a 408 and only run 9lbs? good luck.

itsslow98

iTrader: (18)

Please do some reading regarding the right parts for the build. That rotating assembly is completely wrong for what your looking to do. Start with the stickies in a bunch of sections and then come back and ask questions.

Jontall

You can't use that rotating assembly. You will need one with 6.125" rods and a 4" stroke. I would not bore it more the 0.005" (4.005" bore) unless it needs it (boost balloons cylinders so thicker is better), but you'll need to know this before you can order the assembly (have the block checked/machined first). (You can have a good machine shop machine and put it together or buying a crate engine is even easier.)

The TVS that you use will be dependent upon the accessories that you are using and port shape. Since it's a LQ4 it probably has truck accessories so you'll need truck pulley spacing. The one you listed is Corvette spacing and LS3 ports. You need to learn a lot before you can move forward with this project so keep reading. Everyone has to start like this.