Hey Guys,

My car is a 350 with 10:1 compression, 480 lift cam. Holly 750 Double pumper carb, pete jackson timing gears.
I have a 411 rear end.

I believe the car is about 400 HP

My clutch is not grabbing, I've had it adjusted, but no good. the car winds out frequently.

I'm not sure which clutch to get with my setup. I've heard about 3 or 5 finger clutches etc... I'm not sure what the terminology means.

Any suggestions on a clutch?

Centerforce dual friction. The best out there IMO

I have a 406, 4:11 gear with a Centerforce Stage II clutch. Cluthc is great on the street - grabs fine - well over 400hp

I think I'm going to go for the few extra bucks with the Dual Friction. BTW, This is a street car, I take it to work occasionally etc.., any reason NOT to go with the Dual Friction?

Also, my tranny is a Muncie M21

One more thing, while I am doing this, do I need to replace anything else besides the clutch kit (pressure plate & clutch disc)?

Thanks again for your advice!

if it were me , I'd resurface the flywheel while you were in there...

No reason at all not to go with the CF dual friction. It is smooth on the street and grabs good at the track. I would also replace the throw out bearing and at a minimum inspect the pilot bearing (replace if worn). Never hurts to take a look at the front seal either.

CF dual friction has light pedal pressure but holds on very well. The borg and beck type 3 finger clutch carries high spring pressure and is known to chatter.

Thanks again guys, I will check all suggested parts & resurface the flywheel.

I came up with this part number from Summit Racing when looking up 1967 camaro
CTF-DF735552

This is the link

http://store.summitracing.com/default.asp?Ntt=centerforce+dual&Ntk=KeywordSearch&DDS=1&searchinresults=false&N=0&target=egnsearch.asp&x=26&y=12

I'm not sure how many inches my existing clutch is. Does it matter?

I just installed a CF II in my car, now it cherps the tires from 3rd to 4th, never ever did that before, even with my Hays set up!

Ok guys, I ordered the Centerforce Dual Friction cluth & throwout bearing.

One question, I noticed a post about people Centerforce clutches flattening the nuts on the flywheel & something about needing to have a heavy duty clutchfork.

I'm not mechanically inclined enough to put the clutch in myself, so I'm paying someone to do it. PLease let me know if there is anything else I need to check, as I don't want to have to pay someone twice.

Do I need a "Heavy Duty Clutch fork"? Anything else I should check?

Thanks,
Nick

Please consider getting a new pressure plate too b/c you might have "toasted" it already due to heat caused slippage.

How do I know?? Ask Travis.....

pdq67

PDQ - the dual friction is a complete matched set.

I'm not aware of any HD fork, just use the correct small block one. The HD I've seen is a second Gen by Lakwood and won't work. I didn't have any flywheel bolt issues and if there are any, I would say it's an install error.


I'd use new ARP or GM flywheel and pressure plate bolts.

Thanks Rick, I have what I believe to be a stock GM SBC flywheel (not sure which car it came from, as I got it at a swap meet when we first put my engine together...) I am going to have it resurfaced. Hope his is good enough.
I was almost going to order one of the performance ones, but I asked Summit if it would be any better, or give me any better performance & they didn't seem to think so... I figured if it wouldn't make much difference, I'd save the money...

Sorry, I meant to use new bolts - either ARP or GM.

Oh, thanks, I just figured that out after I re-read your post. :)
I'll take your advice & order the ARP bolts.

BTW, this is the name of the thread I was talking about with the Clutch Fork.

Question for people running Centerforce DF Clutch

I don't see why a HD fork, if it exists , would be needed. The pedal effort is low. It's a very nice item. Mine's been in 3 yrs and performs great.

Good Rick,

Good luck with your install.

pdq67

My 69 had a stock clutch with either a HD clutch fork or a clutch fork form a later gen camaro. My tranny is a ST-10 that came out of some gm car in 73. When i changed the clutch, I went with the Centerforce DF. I don't know how the guy before me got the HD fork to work because I had no luck. When I installed the new clutch, the fork kept hitting the firewall. I adjusted the clutch linkage and it still hit, so don't use a heavy duty clutch fork. I ordered the correct fork for a 69 camaro from a chevy dealer and no problems.

My DF clutch whines a little when the clutch pedel is not depressed and the car is idling. It usually does this when I start it up. The whine is not constant, but it happens every now and then. I was told this is normal because the counter weights cause this. This clutch hooks and doesn't require a lot of effort. Good luck.

I gotcha Den, I'm not sure which fork I have either, as my setup was put together from spare parts 15 years ago (I bought my RS/SS without a drive train) But I have had a stock clutch in the car since then & I haven't had any trouble with the fork since, so I guess I will be ok when I switch to the Centerforce setup...

Also, is there a big difference between the ARP High performance bolts & the PRO bolts?

My speed shop doesn't have the PRO bolts in stock....

Thanks,
Nick

I just installed the dual friction clutch in my car when i pulled the engine and tranny my clutch fork had been welded in two places so i went to GM and ordered the factory replacement for my tranny I think that this fork is plenty capable of dealing with the minimum of pressure that this clutch set-up requires .. this is really a sweet clutch requires no more release pressure than a stock set-up and with my 375 horse engine grips and holds tight no problem... I like this set-up alot and btw i think that the ARP bolts are just the ticket buy em and use them i think they will do just fine!

Thanks GreyShadows, if you don't mind, what did the Clutch Fork cost? Also, is it the same for 67-69

Again, I'm not sure which fork I have now, but it always worked fine with the stock setup....

I bought the ARP bolts, they didn't have the pro series in stock, I hope the Hi Performance series are strong enough.

Anyone have any issues using the high performance series of ARP bolts?

Oh yea, what is the part number for the clutch fork as well? ... just in case...