ss performance

iTrader: (17)

I'm thinking about changing direction.

I am wondering how much boost/hp a stock LS1 bottom end can take.

I'm thinking of going turbo charged. I would be changing the heads so I would upgrade the head gaskets. (Reccomendation on head gaskets would help as well.) I will be going with ARP Head studs as well.

I have a FAST 92/102 intake but would most likely sell that and go with a LS6 intake.

Any input would be helpful.

HCI2000SS

iTrader: (2)

Seems like everywhere I read it's around 550 rwhp or so. Of course some run a bit more and get away with it, and some don't lol. I wouldn't feel too comfortable going much beyond that personally

Beanslsxnova

iTrader: (1)

Nothing wrong with the fast intake, so keep that. Ls9 head gaskets. From my own personal experience 15lbs and a good tune and it will live for a good while. As long as you respect it and don't beat the snot out of it all the time. If your running e85 you'll be fine. If your on pump gas I would recommend a meth kit for anything over 10lbs

607motorsports

iTrader: (6)

Ran 13psi and meth all last season through a TC78 with zero issues and currently running 15psi with meth this season. I have not had the car on the rollers yet but at the current boost level on this setup the car should be in the 650-700whp range.

As mentioned a good tune is key and meth will certainly help keep things cool while bumping the octane rating if running pump gas.

ss performance

iTrader: (17)

Do you have any track times?

I was planning to run meth injection, the nearest E85 station is about 70 miles away.

Ryans99ls1

iTrader: (16)

numbers in sig (~10lbs).. going for a lil more this year. Its more about the power its making than the boost. if your tune is good it will live for a longggg time under 650whp. anything over that and the rods will eventually start to bend. another key is keeping the rpms within reason, i only spin mine to 6200rpm (if that) on the street.

E85 is the **** too.

BMF_Racing

iTrader: (6)

Not ls1, but I ran my stock LQ4 all year last year at 15 psi with 88mm and it netted 10.20's in my GN (650whp). Race weight was 4255lbs. With good fuel and cool AIT's and it should live for a while with good tune. It bent 3 rods at 740whp.

MUSTANGBRKR02

iTrader: (91)

https://ls1tech.com/forums/forced-in...lity-list.html

607motorsports

iTrader: (6)

No sorry no track times, where I live in NY the closest 1/4 mile track is a good 1.5-2 hours away. My car is more a street car than a track car, i'm not easy on it but I also do not beat the living hell out of it either.

99WS6_

iTrader: (1)

Safe tune...but what I heard that is a variable to killing the engine is rpm so watch it while its stock

607motorsports

iTrader: (6)

My current tune has the car sitting at 15psi, 11.2-3afr, 18 degrees of timing with A LOT of meth, and rev limiter set to 6500 but I normally shift around 6300-6400, my block is a stock bottom end LS6 that came in the 02 SS. I have heard rumors the sleeves were slightly thicker on the LS6 block but I cannot confirm that?

yelo04goat

iTrader: (11)

i know a guy that was at 750 hp when a factory rod let go and took the block with it


if you need some ls9 gaskets let me know i have a set i need to get rid of PM me

Twin turbo c5

I've had 670hp and 623 tq for 2 years in my c5 with no issues at all. It's all in the tune and use methanol to keep it alive. I also have a fairmont with a 6.0 with 182,000 miles with a 80mm turbo and never had the valve coves off I pulled it out and stuck it in the fairmont and I beat the snot out of it.

Nitroused383

iTrader: (10)

I wouldn't consider that a safe tune on pump gas at all. That's more of an all out tune in my opinion.

Sarg

iTrader: (6)

Tune has to be spot on, but so does the octane of your fuel! Meth or E85 are pretty much a necessity I think in helping things stay together.

sweet99ss

iTrader: (41)

Like said above 550 is max and it could blow at 500 you just never know. Mine blew with 50k miles and it wasn't even boosted yet!

The Alchemist

iTrader: (19)

18 degrees is a good bit of timing to be considered safe for a stock bottom end.

From personal experience and doing quite a bit of research on here, I think the key to keeping a stock shortblock alive is keeping the heat out of the pistons and rings. Either run lower boost and no long highway runs in 4th to wot, or run 50/50 meoh/water. I know, people are going to scream that 100% meth is what so-and-so recommends, but water pulls out more heat from the combustion chamber than meoh alone. Heat in the top of the pistons causes the rings to butt together, and then you snap a ringland or two, and take out the rod and block with it.

JAX04

iTrader: (17)

You would swear that yellow upper portion of this section doesnt exist....

607motorsports

iTrader: (6)

I didn't say it was a safe tune but it is a very good tune, i've spent alot of time making sure the timing and air fuel are spot on throughout. I know i'm pushing the limits of the stock bottom end but I also have a 6.0 iron block build in the works so I have the luxury of doing so.

I run a lot of meth at a 50/50 meth/water mixture and have the coolant flowing to the rear of the heads as well to keep things as cool as possible. I agree the key is keeping combustion temps down as much as possible.

If you don't have the funds or ability to fix/replace your motor if it breaks I definitely recommend being more conservative than I am.

higgsfbody

iTrader: (1)

ive known to take stock bottom end lq4s with arp stuff to 1000 but im also curious about an ls1,im doing the same right now I have all arp rod bolts/mains/head studs/everything has been freshened up but i wonder how far i can really take this thing compared to the lq motors?