firstvette99

03 coupe mn6 stock drivetrain can I run 6-7 psi safely with no alky and no other mods,to the drivetrain or engine.
thanks for any input.

Water_Walker

No. Stock clutch cannot hold.

itsslow98

I say yea, 6-7 psi wont make that power in all reality on a stock ls1. Clutch will last for a decent while if you dont try launching it all the time.

Water_Walker

If I am wrong, nothing happens. If the clutch doesn't hold, now you are into the car again parts, labor, and thousands you didn't plan to spend.

For reference, I made 438rwhp cam only car and the sub 20k clutch could not hold it.

StatmanRN

A lot depends n the milage and condition of the engine now. If it has been well maintained and the leak down is good, the engine is likely OK at that level. Valve springs may be a concern.

A stock clutch wont be long for the world. And isnt easy or cheap to do.

For most of us, one thing has lead to another- either more mods or repairs. Likley both.

Darion

Have some $$$$ put aside just in case, ask my 7 Cylinder! lol

PC

Turpid porpoise

Nothing is safe when you're talking about running 50-60% more power than stock on pump gas. So many things could go wrong or you could be one of the lucky ones who is able to keep a stock motor in one piece for 100,000 miles. There are just too many variables for anyone to predict what might happen.

Time for a C-5

My stock 01 clutch (non Z06) with 60,000 miles stopped holding and stuck to the floor IMMEDIATELY after a mild heads/cam build.

neutron82

regardless if the stock clutch can hold the power or not I'm fairly certain it won't allow you to shift properly at high rpm with the added power so I would plan on changing it either way

lilryan

Engine should live with no issues if you have a competent tuner. Everyone is correct suggesting upgrading the clutch. That will be on borrowed time.

RockyMtC5

I'm heads/cam/intake and 433/396 and my stock clutch still operates fine under normal and most spirited driving except shifting above 6k rpm and it starts to feel squishy and shifting at 7k rpm and it starts to stay close to the floor and needs to be pumped to get it back to normal feeling.

I'm having a supercharger installed in 2 weeks and I'm having a new clutch, brakes and shocks installed at the same time! NOT CHEAP but we all know you gotta pay to play

94 blackBeast

Rpm built rear. Diff. brace, rebuilt TT with billet couplers, rpm trans, dual disc clutch. Cartek stage 4 heads. Ati dampner, Full exhaust ..blah blah blah. The blower was the cheap part. I'm not running insane power. Always kept the mind set. Build drivetrain. That way by the time you spend $$$ on the motor. You got the rest. All this on a 100,000 mile bottom end. People always worry abput miles on a vette. It's an ls .....how many chevy trucks have quarter million miles good tune is a must.

_zebra

here's what my flywheel looked like at 73k mi with the stock clutch - 28k with the blower making 540/525 for the last 7yrs. a few weekends on road courses & plenty of street pulls - all rolling into the throttle & granny shifting.

_zebra

but 6-7psi is chump change on an LS1 vette - especially if you're using a centrifugal.