OutToWinPAHC

iTrader: (10)

Gathering parts not for my boost build.

5.4 Iron LSX (LQ4 block, 4.8 Crank). Current in the collection are LS3 heads, TSP rockers, block, Lunati 6.300 rods, arp main kit, custom turbo cam, LSA oil pump, timing set and 1/2 head studs.

Blocks being machined now and we will place the order for the pistons based on the specs of the block (naturally). Pistons will be RaceTech and then coated by swain tech. Target compression with my heads will be 9.1.

I dont live in corn country so I cant e85 so 93 octane with boostane it is.

The question:
What are the 1000WHP gas guys running for turbos. I am thinking something similar to a pair of 6468's T4's 1.10ar or similar. Perhaps some of the smaller BWS300 line to keep that cost down, The plan is a China special pair of ebay turbo manifold, but jet hotted. Or should I just single it and be done. Would like to be hard into boostunder 4Krpm

Blown06

iTrader: (32)

I'd give lil john or jose at forced inductions for a recommendation on a setup like that. Being that it is a little different than your run of the mill ls stuff, very short stroke, big bore, long rod deal. Cam selection will be important as will the tune up with the increased dwell time at BDC and TDC.

OutToWinPAHC

iTrader: (10)

I actually think I'm going to lower my power goal for a maximum 1100 but normal boo setting in the 800s. I'm going to be running it on aem infinity. For twins I like something in the area of 6264 or 6468 but Borg Warner does have a 6368 on the inexpensive side. However I'm uncertain on single turbo set up I like the idea of the simplicity and the cost savings but I'm very unsure of when it comes to usable used boost. Lag monster is not what i want.

rkreigh

are they the mast small bore LS3 style heads?

I though the LS3 valves were too big for the 3.78 bore?

2002camaroSS

iTrader: (8)

He said lq4 block not sure where you got the 3.78 bore for that block.

OutToWinPAHC

iTrader: (10)

4.030 bore, 3.267 stroke, 6.300 rod The Pistons will be custom ordered after the block and heads are back from the machine shop

stevieturbo

And what transmission ?

Asking for 1200hp potential on a smaller motor and hard boost under 4k is asking a lot from cheap turbos.

A pair of BW SXE362's might be close, or if the lower rpm really is more important, a pair of the SXE257's might be better with perhaps a little less top end ability

http://www.agpturbo.com/borg-warner-...1-12769095003/

OutToWinPAHC

iTrader: (10)

2500 for turbo or turbos would be nice a pair of 360 jb s363 t4 or a single 88-95mm unit. Hard boost at 4k is target. Currently making 600whp on a 2.5 liter with a 5858 at 21psi

stevieturbo

You still havent stated what trans ? That will have a big impact on whether boost before 4k is even needed or not

OutToWinPAHC

iTrader: (10)

A nissan FS5R30A
1st - 3.214
2nd - 1.925
3rd - 1.302
4th - 1.000
5th - .752
Reverse - 3.369

Diff is 4.089

JoeNova

Someone did this exact same build already, with roughly the results you're looking for. His name was Jackson, called it hundred headed screamer. Look it up here on the forums.

stevieturbo

I'd probably go for the smaller turbos then, and definitely need a taller diff than that. Unless it's for burnouts or similar.

transam69230

iTrader: (49)

https://ls1tech.com/forums/forced-in...lated-t56.html

OutToWinPAHC

iTrader: (10)

he did a high comp e85 build, I did read a good bit of it, but I dont live in an e85 area so I need to adjust the scope

OutToWinPAHC

iTrader: (10)

fyi this is the car

JoeNova

So lower the compression and run gas.

The high compression version was the 2nd phase of the build. He did a low compression smaller cam version too.

His build gives you a great idea of what works, and answers your turbo sizing questions.

stevieturbo

Just dont get greedy trying to run a high CR, and pump fuel or pump+meth will be fine.

stock48

iTrader: (17)

If it were me Id stick with the stock stroke and run a pair of basic S366's or 64's or a billet 76. The short stroke deals are cool and rev high and will make a good pk number but you will make more power on the lower octane with the longer stroke. It will spool better, make better use out of the sq heads, and have a lot better power under the curve.

SpeedJunkee

Have you considered the use of meth injection in place of the octane booster? With the help of an intercooler, similar results of E85 can be found simply by using meth injection (and its a LOT cheaper).

Sounds like you are trying to save $. You likely would have less into a large good quality BW like an S400 rather than going with a set of China ebay twins I would think.

OutToWinPAHC

iTrader: (10)

Cheap turbos are bw to me, the S363s would be the cheapest I would go, but I have been talking to my tuner who is trying to talk me into a procharger F1-x. Going to be using a valve spring with a 175 seat pressure and .685 lift, rockers will be connecting by hydros, looking at options now.

Unlike the 240 there is room under stock hoods for more activites. about 6 inches of forward space.

As for the stroke I'm gonna run the short, cost more year, but it will be fun in the revs