DownSouthWS6

iTrader: (1)

under wot and quick shifting, i can go through first and into second fine, but when i press the clutch and take it out of second, it wont go into third without having to use hulk strength. if i leave it in neutral and pump the clutch about 3 times its completely fine. is my clutch fluid boiling or do i need a better clutch?

99NMB

iTrader: (7)

Same problem here. Ive replaced the master done the drill mod. cant figure out what the hell the problem is. thinking its either my slave or my Pressure plate.

DARK98Z

iTrader: (10)

I had the same problem also, I bled my clutch and that cured the problem goes through the gears more better now.

99NMB

iTrader: (7)

yes ive blead the living hell out of mine, makes little to no difference used a mighty vac on to.

DownSouthWS6

iTrader: (1)

so to start out i should bleed the lines?

2000_SS

iTrader: (24)

bleeding would be a good start. one thing i'm going to try is using a heat wrap, like people put on headers, around the clutch line going from the master to the slave. the fluid DOES get hot, and putting that wrap on it may help out....i just don't have a motor in the car yet, so i haven't tried it...

Choppers

iTrader: (60)

my dads mustang was doing that and the syncro was going out. don't know if thats your problem or not. just a thought that came to mind.

mondols1

iTrader: (2)

if you have clean fluid and have done the drill mod then its probably a pressure plate prob.

DownSouthWS6

iTrader: (1)

i have no idea how to bleed clutch lines or where they are to wrap them. not to sound like a "newbie" but wtf is a drill mod?

WS6R6

iTrader: (1)

Search it. You will find a lot of information and also a very good how-to.

twitchtwice

iTrader: (12)

i thought there was some sort of master cylinder "drill mod" on the hose that sends the fluid to the tranny. it stops you from shifting into third because of a lack of fluid. search for it. ive heard people talk about it.

edit: went and found you a link showing the "drill mod" https://ls1tech.com/forums/showthrea...=969651&page=2

DownSouthWS6

iTrader: (1)

so a drill mod is just larger lines for the fluid to go through? and why would GM put lines on a LS1 powered car that inhibits it from going as fast as possible in a straight line?

SpaZMaN

iTrader: (5)

Thats the same as to ask why would they put a weak 10-bolt in the car?

shoemike

iTrader: (25)

a better master cylinder (mcleod) helps tremendously with hard shifting.

OUTLAWZ RACING

iTrader: (9)

Switchig gears really fast sometimes wont allow the fluid to hit the slave fast enough and your not getting quick disengagement. If your having to pump the clutch up its time to upgrade the fluid and slave. I use valveoline brake fluid synthetic ****. I have a stock slave and master on a ram hd clutch and 7k rpm shifts I can glide through the gears.

wht01ws6ta

iTrader: (45)

Ha, some people say the restriction in the line was to help protect the 10 bolt from the M6!

I had the same problem for months with a new master, new slave, and the drill mod done. Bleeding the line didn't help either but then the problem just went a away and it's been shifting fine. Maybe an air bubble finally worked it's way up to the top. That probably doesn't help you much but just sharing what fixed mine (apparently doing nothing worked well lol).

noriceinside

iTrader: (6)

when i bought my car from the original owner 3 months ago the clutch fluid was blacker than the brand new tires. i did the drill mod and flushed it all out with DOT 4 and i still have a problem. it actually seems to be more present than before.

i believe sometimes once the fluid gets bad enough it will start to damage the seals and the master/slave are shot. i want to replace my master first cuz its the cheapest and easiest but i know if the master is bad the slave probably is too. and if im pulling the trans to do the slave i may as well do a clutch too...

ae13291

iTrader: (8)

i bled my slave and did the drill mod and wrapped the lines with like 3 layers of high heat tape. i also used dot 4 and my fluid stays fresh alot longer now. sometimes the pedel might go down at high rpms but it usually wont the way i drive

DownSouthWS6

iTrader: (1)

so basically, its either the master, the slave, the lines, or the fluid. so if i change all of those (and like noriceinside said, might as well get a new clutch while im at it) the problem should be fixed?

wht01ws6ta

iTrader: (45)

That would be everything so yeah that should fix it! Of course you would want to make sure the lines are bled after the install unless you get the master and slave as one piece and its already pre-bled and you don't break any seal.