Snyper

iTrader: (27)

Heres my setup.

LS2
Stock crank
callies rods
wiseco pistons 4.005 -11cc
ARP Main/head studs
H bearings
228/228 .588/.588
LS2 gaskets
Fully cncd 317s (72cc)
FAST LSXR
SLP Double roller
LS7 lifters/hardend pushrods
PT88 turbo.
And direct port meth.

What rpm/boost/power do you think this setup will be good to? I want to run 16-20psi. My original plan was 20psi using stock 317s and a stock intake..but im figuring with the heads/intake I can make the same power on less boost.

gnx7

iTrader: (28)

whatever the limits of a 4 bolt head design are. Around 1000rwhp..... with a good tune.

Your heads will only take soo many heat cycles before you will need something else I imagine.

nodrok

+1 from what we are seeing from other members around 1000 if it done right. Now the rest of your set up thats a different story.

CarsandWomen

iTrader: (19)

without O-rings Im with him^^^ the limit will be pushing water. from what ive seen of the limits of the crank its too erratic (anywhere from 800 to 1400), tune it well and i think itall hold till the water starts pushing.

Snyper

iTrader: (27)

Well I think im gonna push for 850whp. I think it will be more than enough to get me to 150mph in the 1/4.

ChevyChad

iTrader: (50)

Good luck man.. I wouldnt push stock casting heads that far, but heads are easy enough to change if you start pushing water. The rest of your setup should be good for 900-1000 comfortably if the tune is good. Again, I agree that the weakest link will be 4 bolt heads, and especially stock casting ones pushing water.

Snyper

iTrader: (27)

Yeah, AFRs or TFSs will come next winter. I don't see why the stock castings wont get me another 12mph with the whole new setup safely. (I hope)

Hank Peabody

iTrader: (2)

138mph to 150mph is a big hp difference, but I bet it is doable, especially with that PT88! How much does your car weigh? I bet you can do with headstuds like you are using, stock TTY head bolts can go real fast, studs would have to add more to the outer limits of what is going to use water. Even if you use a little water does that ever hurt anything? I have a turbo bike that uses up a ton of water, so much that it is losing alot of power, I am redoing it, but Ive never had any ill effects from the "pushing" of water other than not going as fast as it should, Ive got about 20 passes on it doing that. Let us know how it does.

Snyper

iTrader: (27)

My car is 3188 full weight. Its a little heavier now with the chromoly roll cage but ill lighten it up on track days like taking the passenger seat out and other stuff.(my new driver seat is MUCH lighter than the stock one as well as my 18" wheels are MUCH lighter than my old factory 18" wheels.) I went 138 with STOCK heads/intake/suspension 1.88 60', 103* weather, pump gas(no meth) and a very safe tune.

CarsandWomen

iTrader: (19)

Mark theres a pretty good bunch of guys pushing 900+ to the wheels with 317's, they can take it. Mr. Big is doing it with an F series procharger so hes really making probably 1200 ish at the flywheel. Like i said, I think pushing water is the limit

Hank Peabody

iTrader: (2)

Thats pretty light, 150mph should be pretty easy with your setup, Im almost the same weight and went 145mph with a way crappier setup.

What "direct port meth" are you using? I am very interested in different ways of spraying it, what is that? Thanks!

Snyper

iTrader: (27)

Im making the kit. haha. Its going to be a little over done but it will be done in a way where I won't ever have to worry about it. Im running twin pumps(they are internally regulated) so if one goes out the other will keep pumping..in time for me to abort the run. With a running LED light for each on my dash. And up front Im going to be running a dist. block with 8-2 gallon nozzles drilled and tapped in the direct port nitrous provisions on my FAST intake manifold.

CarsandWomen

iTrader: (19)

totally off subject but does your T56 have a pump?

brokeTA

iTrader: (9)

My ls2 setup never had water issues, but when I pulled it apart after the 3rd season the bottoms of the main caps were pretty chewed up. It was making just shy of 700 rwhp in a 3700 lb car and ran 9.60s. I would say your problem won't be with the heads, but maybe the block without the main caps pinned. Thats if you have any problems at all.

bad6as

iTrader: (17)

i see a few things to keep an eye on. you should be around 1k flywheel
the block will start to flex, and also the deck on the 317 heads,

Snyper

iTrader: (27)

Have a pump? And as far as all the power goes..the only time ill ever run boost that high is at the track or on the dyno to break in and tune the engine. Ill go to the track maybe twice this year..or until I reach my goal.

FMX05

iTrader: (3)

The new cool thing to do is to rig an external pump set up on the T56 to spray trans fluid directly on the gears under the premise that upon a hard launch all of the fluid runs to the back of the trans.

This is the first thread I ever saw about it:

https://ls1tech.com/forums/manual-tr...h-hp-cars.html


This is also how the huge HP standing mile guys are making TR6060's live behind 1500-2000hp.

CarsandWomen

iTrader: (19)

^^^yes sir. I dunno much about it but i figure its worth lookin into

Snyper

iTrader: (27)

Hrmmmmmmm..I kind of like that idea. If I end up staying 6 speed I might have to try that.