Twin Turbo LS1
 

Can a stock TT LS1 support approximately 550rwhp?

I've seen several make that much power. That is at the upper limit however with a stock engine.

Jody

...and even at that power level I'd be slightly worried about the possibility of pinching a ring with stock ring end gaps.

I seen them support nearly that much Naturally Aspirated ;)

Trick is the tuning. If it rattles, #7 will take a dump on you.

As mentioned a lot has to do with tuning. I have a few 550 RWHP SC and TT cars out there running well on stock engines. Get to the 575 area and it seems I run into the ringland breaking between the top and second ring.

Now keep in mind that most of these cars are drivers with occasional WOT on the street or track. If you are a hard driver a lot of the time, then you can expect issues such as pinched rings and burnt pistons at the 550 level from what I have seen.

I would also install a good set of valve springs on a stock LS to be safe.

Hope this helps.

Mike Norris

yes it can take that much power but like said if its driven really hard all the time, might want to back it down to say 500rwhp. i would definetely add valve springs to a boosted LS1. make sure your tuning is right and you have enough fuel for the amount of boost you will run.

:mad: Don't forget that big boost combined with factory high compression will eat up bearings if driven hard and often. I just smoked my bottom end after 12k miles on my 520rwhp MagnaCharged LS2.......I'm PISSED!!!

Dude that sucks!!! :mad:

engine
 

A top of what was mentioned by jason, make sure your AFR's are on the nose. I have done a lot of work on turbo srt-4's an I really push the AFR subject wehn they wanted to add more boost, or bigger turbos.
With the stock bottom ends of all modern engine being built with tighter tolerances, you have to be really carefull about beating them up to much with keeping your stock high compression.
One thing you could do is, change the cam that will have a little more over lap. Or get some head gaskets that will lower you comp by a point.

There is much more you can do without going to far in the eingine to make live at the HP level you want.

Jason, you know what it means when this happens right? Now you have an excuss to build something with more power.:thumbsup:

YUP!! I tried to cheat it by using thicker head gaskets and a cam with more overlap to effectively reduce dynamic compression.....

Guess I might have to get a stroker kit: crank, rods, dished pistons and then run more boost? OH NO, maybe I am gonna have to have a little more giddyup under the hood now? :rolleyes:

Reccomendations anyone???