Clutch recommendation - Chevelle Tech
Transmission & Driveline Transmissions and Differentials

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post #1 of 21 (permalink) Old Apr 22nd, 19, 3:48 PM Thread Starter
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Clutch recommendation

Hi all! As I am getting nearer to ordering the transmission/clutch I am wanting some feedback on the clutch that SST has recommended for my set up. They are wanting to use a single ceramic sprung hub disk. I am wanting something that is easy to drive and has decent street manners. The clutch is rated to hold up to 650lbs of torque, which is roughly 50 more than I currently make. I don't want to spend 1200 on a clutch so their's might be a good compromise.

What are your thoughts?

Car is 3680lbs and has 3.73s in the back with a 489 making roughly 630hp with 600lbs of torque.
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post #2 of 21 (permalink) Old Apr 22nd, 19, 5:07 PM
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Re: Clutch recommendation

Hey, Tacoma. About an hour and 15 north of you I'm running an 11-inch Centerforce Dual Friction bolted to a Hays SFI billet wheel. But you're pumping out about 130 more HP than me.
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post #3 of 21 (permalink) Old Apr 22nd, 19, 6:30 PM Thread Starter
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Originally Posted by Saltherring View Post
Hey, Tacoma. About an hour and 15 north of you I'm running an 11-inch Centerforce Dual Friction bolted to a Hays SFI billet wheel. But you're pumping out about 130 more HP than me.
Probably a little more than an hour! That sad from my truck, I am down in California.

How do you like the clutch? Silver sport said it would be fine and wouldn't notice a difference between the ceramic and organic if set up right
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post #4 of 21 (permalink) Old Apr 23rd, 19, 1:16 AM
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Re: Clutch recommendation

Yeah, now I remember. You're not from Tacoma, you drive one.

This is the second CF DF I've run. The first was a 10.5" setup behind a hot little 327 in a '65 SS Malibu. The present one is an 11 incher behind an upgraded L78 396 in a '69 SS Chevelle. I raced the '65 a bit but the '69 hasn't been down the track yet. Both clutches have hooked up well and operate smoothly with what I would call moderate foot pedal pressure. Never had slicks on either, however, but both have been 3.73 gears with C/R Muncie transmissions.
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post #5 of 21 (permalink) Old Apr 23rd, 19, 1:17 AM Thread Starter
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Originally Posted by Saltherring View Post
This is the second CF DF I've run. The first was a 10.5" setup behind a hot little 327 in a '65 SS Malibu. The present one is an 11 incher behind an upgraded L78 396 in a '69 SS Chevelle. I raced the '65 a bit but the '69 hasn't been down the track yet. Both clutches have hooked up well and operate smoothly with what I would call moderate foot pedal pressure. Never had slicks on either, however, but both have been 3.73 gears with C/R Muncie transmissions.
Are you using hydraulic or mechanical?
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post #6 of 21 (permalink) Old Apr 23rd, 19, 1:19 AM
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Re: Clutch recommendation

All stock mechanical linkage.
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post #7 of 21 (permalink) Old Apr 23rd, 19, 1:29 AM Thread Starter
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All stock mechanical linkage.
How is the 11 inch on the street? Is it grabby?
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post #8 of 21 (permalink) Old Apr 23rd, 19, 1:48 AM
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Re: Clutch recommendation

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Originally Posted by tacomatrd View Post
How is the 11 inch on the street? Is it grabby?
Not at all in my opinion. Most of my driving is paved back roads and clutch operation is smooth and precise, but the present car will burn off a fair chunk of rubber with a 7 grand 1-2 hard (non-power) shift.

I should possibly amend the "moderate" pedal pressure remark at bit, as I have very strong legs and what is moderate to me might seem a bit heavy to other folks.
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post #9 of 21 (permalink) Old Apr 23rd, 19, 6:45 AM
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Re: Clutch recommendation

I just ordered a new disc for my Centerforce DF. Rated for 620 ft lbs, so my new 600 pounder should let it live a year or two. Never had issue with CF DF. 20 years running. But I am putting another 100+ ft lbs on it now.

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post #10 of 21 (permalink) Old Apr 23rd, 19, 2:02 PM
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Re: Clutch recommendation

I just put the CF DF in my 68. Itís an 11Ē behind 454 thatís built up a little with a muncie, all mechanical stock style linkage. I think the pedal feel is super light! Way lighter than I was expecting. Iím still trying to break it in (motor and clutch) and going easy, but it seems to be holding excellent; tires are breaking loose before the clutch slips. Iím definitely happy with my choice.

No car yet; currently looking for 66-69 project/driver.
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post #11 of 21 (permalink) Old Apr 23rd, 19, 3:09 PM
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Re: Clutch recommendation

I ran CF DF in my 69 behind big and small blocks. Never any issue. Pedal pressure is easy for driving with mechanical linkage. Grabbed like glue at the drag strip adjusted for the street.
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post #12 of 21 (permalink) Old Apr 23rd, 19, 4:32 PM
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Re: Clutch recommendation

I would still consider twin disc if I were you. Though I'd seriously consider mechanical linkage if using stock linkage.

The McLeod RST can absolutely handle the power, the RXT will handle more abuse without overheating. Either of those clutches are noisy.

Maybe there's something from Hayes, RAM, Centerforce, or Monster that have dampening springs which will make the clutch much quieter.

Or go all in and get a Mantec clutch for $$$$.

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post #13 of 21 (permalink) Old Apr 24th, 19, 2:41 PM
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Re: Clutch recommendation

What I REALLY covet is a Long Shifter....... had one mounted to the Richmond 5 I ran for a while. loved it vs the Hurst. Maybe the reason I opted to replace the CF DF disc and run my old clutch.
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post #14 of 21 (permalink) Old Apr 24th, 19, 3:54 PM
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Re: Clutch recommendation

Quote:
Originally Posted by 427L88 View Post
What I REALLY covet is a Long Shifter....... had one mounted to the Richmond 5 I ran for a while. loved it vs the Hurst. Maybe the reason I opted to replace the CF DF disc and run my old clutch.
They are a nice shifter, and well worth the extra few bucks
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post #15 of 21 (permalink) Old Apr 24th, 19, 5:14 PM
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Re: Clutch recommendation

Not sure Long makes linkage and mounting plate variants to fit all the popular apps. I'm next to certain they don't adapt to a factory '68-'72 chevelle tunnel.
I personally have no gripes when it comes to a well prepped hurst shifter.
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