00tals1

iTrader: (4)

My dad and I finally got to put the LS7 clutch in. At the same time replaced my Mcleod Adjustable Master Cylinder with new stock one. Also got a new slave. One note I must add on this install is that the stock clutch bolts did not go into my LS2 Flywheel. I went to Lowes and bought Grade 8 3/8 bolts with lock washers. Thats the only issue I had. Now that its installed I have a couple of questions.
1. How do I make my stock master cylinder adjustable?
2. How long is break in for a clutch?

CaliboyTA

iTrader: (2)

hmm thats wierd. I reuse my stock bolts and it bolted up fine. With breakin it in, the shop told me 500 miles taking it easy. Change fluid and then drive like u nomally do.

ArcticZ28

iTrader: (14)

1. Buy a master cylinder that's adjustable
2. 500 miles of city driving/short trips (not too much highway driving staying in one gear for long periods of time).

mrhzk35404

iTrader: (7)

Flash99

iTrader: (48)

I'm going to be installing this clutch in a few weeks, so I'm reading up as much info as I can. How does the clutch engagement feel with this system?

glennhl

Why do you want an adjustable master, my LS7 clutch engagement point was a little low, but it's moved up after 600 miles.

00tals1

iTrader: (4)

I had an adjustable one before and im not used to the pedal being that high up. So far the clutch feels great. No high rpm shift changes yet.

HavATampa

iTrader: (49)

Is this normal for the stock pressure plate bolts not to work on the LS2 flywheel? First I've heard of this and would like to know. I'll be installing this setup soon. Is it worth it replacing the stock bolts with ARP?

00tals1

iTrader: (4)

The reason the stock ones didnt work was because the stock one have kind of like a built in washer that got in the way.

steve-d

iTrader: (7)

"..... the stock clutch bolts did not go into my LS2 Flywheel. I went to Lowes and bought Grade 8 3/8 bolts with lock washers."


Given all of GM OE stuff in their kingdom is metric (except GMPP crate motors) how in the He** did you get SAE Bolts to work? The OE bolts you couldn't get to work were metric. How did the SAE go in? Hopefully, the answer isn't lots of force.

sTeve

sgarnett

iTrader: (1)

The holes are 10mm, and a 3/8" bolt is 9.5mm. The pitch is probably close enough to allow it for a short distance, given that the threads are going to be a little loose.

The bolt holes in the flywheel are supposed to be snug for 10mm (there are actually different classes of "fit" for different applications) and it isn't unusual for the bolts to be difficult to thread in very far with your fingertips.

Even if the 3/8 bolts held when they were torqued, they are hanging on by a thread, so to speak, and it really isn't safe to keep driving it that way. The legs your pressure plate removes could be yours

Hate to say it, but I'd park it and put in the proper bolts NOW. Check the bolt holes carefully, and if the threads are damaged bite the bullet and get a new flywheel (but you MIGHT get lucky and still find good threads). It sucks, but not as much as it's going to suck WHEN it fails.

steve-d

iTrader: (7)

Sean

Thanks for clarifying my foggy math conversions. I had the 3/8 bolt as being slightly larger. You're right. It's slightly smaller and is NOT a good match for such an item. Too much potential for disaster.