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  #21  
Old 08-06-2024, 12:24 PM
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Thats what has happened to me since 80's with this car. Started off putting cheap parts store clutches in and went through them in no time. Eventually went with a B&B type hayes I believe and had to reenforce some brackets because there was so much peddle pressure. Then finally ended up with the centerforce which has been great compared to all those. Now its time for a new kit to go with the tkx. Even though I didnt have any problems with the weights and vibration Im leaning towards something else this time other than CF.. I just dont need those problems if they did happen to occur. Just want something that can take some play time and last ,,,and not have a stiff peddle.

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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007
(cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD
1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.45 @ 88.1 mph on slippery street tires.Bad 2.19 60ft.Owned since 86'
  #22  
Old 08-06-2024, 12:52 PM
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Could be worse I82, you might not have a car to drive like a sissy.
My clutch pedal isn't the only thing that isn't as stiff as it used to be ...

  #23  
Old 08-06-2024, 01:53 PM
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My clutch pedal isn't the only thing that isn't as stiff as it used to be ...
Nice

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  #24  
Old 08-06-2024, 02:14 PM
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LOL

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  #25  
Old 08-06-2024, 07:29 PM
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Sildenafil 100 mg is your friend I82, it'll put lead in your pencil.

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1967 Firechicken, 499", Edl heads, 262/[email protected]" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. [email protected] mph with a 1.45 60'. Still WAY under the rollbar rule.
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  #26  
Old 08-06-2024, 07:38 PM
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I use a 2400 B&B in my street cars,have a 2800 in my 63 Lemans which I raced in the early years.Keep it as it helps keep my new knee in shape.Tom

  #27  
Old 08-06-2024, 07:44 PM
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I have a McLeod setup. I have a factory mechanical system, no hydraulics. Pedal feel is good, not too stiff, pretty soft actually. No complaints about it.

https://www.summitracing.com/parts/m...mber+Ad+Groups

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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear

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  #28  
Old 08-06-2024, 09:36 PM
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I have a McLeod setup. I have a factory mechanical system, no hydraulics. Pedal feel is good, not too stiff, pretty soft actually. No complaints about it.

https://www.summitracing.com/parts/m...mber+Ad+Groups
Did I read earlier that you had a 221 and went to the 321? What were the characteristics of the 2 and why do you like the 321 better?

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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007
(cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD
1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.45 @ 88.1 mph on slippery street tires.Bad 2.19 60ft.Owned since 86'
  #29  
Old 08-06-2024, 11:30 PM
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Did I read earlier that you had a 221 and went to the 321? What were the characteristics of the 2 and why do you like the 321 better?
I never actually had the 221 in the car. It's hard to remember the details all of that but I think I had the 221 and sent it back for the 321 before it all came together in the car. So, I can't give any comparison between the two. But, my impression of the 321 is that it handles my engine well and with a stock linkage, the pedal feel is very good and I go out of my way to drive on steep, windy roads with a lot of shifting.

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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear

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  #30  
Old 08-07-2024, 07:02 AM
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Ok thanks. Looking at the specs I might get the 221. Looks like their version of the “ dual friction “. If it’s at least as good as the centerforce ll I’ve been using with a equally good pedal feel I should be happy with it.
You ever try your car at the drag strip?

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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007
(cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD
1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.45 @ 88.1 mph on slippery street tires.Bad 2.19 60ft.Owned since 86'
  #31  
Old 08-07-2024, 10:16 AM
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Never had it to the strip. I'd love to but it's a bit too far.

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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear

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  #32  
Old 08-07-2024, 11:11 AM
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Common now

We drive ours to the track all the time over 4 hours of drive time and 250 miles.

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Old 08-07-2024, 12:37 PM
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Never had it to the strip. I'd love to but it's a bit too far.
Jeff at SS recommends the 321 by my driving habits

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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007
(cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD
1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.45 @ 88.1 mph on slippery street tires.Bad 2.19 60ft.Owned since 86'
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  #34  
Old 08-07-2024, 01:00 PM
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That McLeod 321 setup uses the legacy type arched fingers, which are the ones that tend to hang. Also, it has ceramic material, which is more aggressive wear on the flywheel. Just to comment.

If you slip the clutch a lot, you will notice the flywheel wear. If you don't do any higher RPM shifts, then a hang situation is generally not a concern.

SPEC uses a combo of different materials, carbon fiber, kevlar, etc, which is more 'advanced' that 'legacy' materials. And the PP is a more modern design as well. Being only like $35 more than the McLeod, it's a deal.

Summit carries them at a lower price as I recall.

If you wonder about the quality, homework it, I did. A lot of modern muscle people use them and swear by them.

Just saying. I don't get any money from the sale of them either.

I have never tried any of the newer McLeod diaphragm PPs, but know a few years ago they did update their' offerings & quality.



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  #35  
Old 08-07-2024, 02:33 PM
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I've never experienced any "clutch hanging" with those bent finger style pressure plates. That's all I've ever used and raced those for many years.

Usually when you have a clutch that hangs it's a sign of mal adjustment, pushing the pressure plate too far passed center and it won't spring back. Most I've worked on come in with not enough free play, people adjusting them too tight likely trying to shorten the throw or just not wanting to press the clutch that far, and they also show signs of wearing those fingers as a result, which also shortens the life of the throw out bearing as well because it's just riding the fingers all the time.

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  #36  
Old 08-07-2024, 03:12 PM
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Quote:
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Common now

We drive ours to the track all the time over 4 hours of drive time and 250 miles.

You're a much more fearsome road warrior than I!


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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear

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  #37  
Old 08-07-2024, 03:17 PM
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Quote:
Originally Posted by HWYSTR455 View Post
That McLeod 321 setup uses the legacy type arched fingers, which are the ones that tend to hang. Also, it has ceramic material, which is more aggressive wear on the flywheel. Just to comment.

If you slip the clutch a lot, you will notice the flywheel wear. If you don't do any higher RPM shifts, then a hang situation is generally not a concern.

SPEC uses a combo of different materials, carbon fiber, kevlar, etc, which is more 'advanced' that 'legacy' materials. And the PP is a more modern design as well. Being only like $35 more than the McLeod, it's a deal.

Summit carries them at a lower price as I recall.

If you wonder about the quality, homework it, I did. A lot of modern muscle people use them and swear by them.

Just saying. I don't get any money from the sale of them either.

I have never tried any of the newer McLeod diaphragm PPs, but know a few years ago they did update their' offerings & quality.

.
I haven't noticed hanging up so far. I don't do much slipping. As far as shift points, I aim for 5000 but it gets to 5500 at times.

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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear

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  #38  
Old 08-07-2024, 04:56 PM
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What about the discs that are Kevlar? MDLs offer their Kevlar but don’t know how they are on the street and how they take abuse .

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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007
(cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD
1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.45 @ 88.1 mph on slippery street tires.Bad 2.19 60ft.Owned since 86'
  #39  
Old 08-07-2024, 06:48 PM
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I got Kevlar once for a street car,never again.Tom

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  #40  
Old 08-07-2024, 09:28 PM
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What happened Tom?

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1967 Firechicken, 499", Edl heads, 262/[email protected]" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. [email protected] mph with a 1.45 60'. Still WAY under the rollbar rule.
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