Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

Has anyone tried Summit Pro Twin Clutch Kits

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Old 10-30-2020, 08:26 PM
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Originally Posted by ddnspider
I'll be shifting north of 7k so I can let you know.....teaser.....
Looking forward to it!
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Old 11-06-2020, 07:16 PM
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@Summitracing clutch is in and the car is moving time for break in.
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Old 11-06-2020, 09:01 PM
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I was thinking of trying out the metallic clutch on my 2000 S10 with LSA supercharged LY6 and TR6060, The Trans came out of a 2013 Camaro 1LE but your fitment guide doesn't show a 2013?
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Old 11-08-2020, 01:26 PM
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A clutch is a clutch is a clutch really. Main thing for actual fitment with be the hydraulic release bearing height and hooking the lines up. You can make spacers to get that **** right.

Tilton makes a 6000 series adjustable hydraulic release bearing that's super nice. I convert stuff to an-3 or an-4 too hook them up.
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Old 11-09-2020, 11:05 AM
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Originally Posted by ddnspider
@Summitracing clutch is in and the car is moving time for break in.
That is some great news. Thanks for the update.

Originally Posted by LLLosingit
I was thinking of trying out the metallic clutch on my 2000 S10 with LSA supercharged LY6 and TR6060, The Trans came out of a 2013 Camaro 1LE but your fitment guide doesn't show a 2013?
Either of our LS Pro Twin Clutch Kits will fit your combo.

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Old 11-24-2020, 02:23 PM
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Originally Posted by jybravo70
My only issue with the McLeod is shim distance, I put in a Street Extreme and had a hard time determining the correct shim(s) to use as I don't have the equipment to measure the gap correctly. I have seen this with other brands too (not Summit).
I used harbor freight digital calipers and a straight edge. Less than $30, and they are handier than pockets. Measurements came out within what the threads here said was fine without shimming, and the instructions with the McLeod said not to worry about shimming also.
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Old 11-24-2020, 05:00 PM
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Originally Posted by Turtle Bite
I used harbor freight digital calipers and a straight edge. Less than $30, and they are handier than pockets. Measurements came out within what the threads here said was fine without shimming, and the instructions with the McLeod said not to worry about shimming also.
Apparently something went wrong as my clutch seems to have eaten my flywheel and pressure plate. The shop working on it has had to pull the transmission 4 times to add shims and finally try to see why it isn't releasing. Will see how good the after sales support is as the shop couldn't measure the pressure plate release as well as they did for the shim gap.
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Old 11-29-2020, 03:52 PM
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Originally Posted by ddnspider
@Summitracing clutch is in and the car is moving time for break in.
Any update, really interested in this clutch setup. Are you running the organic or ceramic metallic disk version?
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Old 11-29-2020, 04:32 PM
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Originally Posted by Surewhynot
Any update, really interested in this clutch setup. Are you running the organic or ceramic metallic disk version?
Im using the organic. Almost done with break in. Being in FL, we don't really have a "winter" so I'll be able to drive it basically whenever I get time or want to. Once break in is done and I get some WOT pulls I'll have an update.
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Old 11-29-2020, 08:57 PM
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Originally Posted by ddnspider
Im using the organic. Almost done with break in. Being in FL, we don't really have a "winter" so I'll be able to drive it basically whenever I get time or want to. Once break in is done and I get some WOT pulls I'll have an update.

Awsome, thank you! How is the pedal effort so far? I am contemplating the ceramic metallic version as I'll be borderline on the organic power wise but dont want a very heavy pedal.
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Old 11-30-2020, 07:14 AM
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Originally Posted by Surewhynot
Awsome, thank you! How is the pedal effort so far? I am contemplating the ceramic metallic version as I'll be borderline on the organic power wise but dont want a very heavy pedal.
The organic is stiffer than stock and stiffer than the RAM PowerGrip I had. I am glad I didn't go with the metallic version as I don't think I'd want the pedal any stiffer than it is, but it is still very DD friendly as it is right now. I have stock hydraulics with the drill mod.
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Old 11-30-2020, 08:37 AM
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Originally Posted by ddnspider
Im using the organic. Almost done with break in. Being in FL, we don't really have a "winter" so I'll be able to drive it basically whenever I get time or want to. Once break in is done and I get some WOT pulls I'll have an update.
Organic 700ft/lb clutch in a full weight turbo LS car? Hopefully it lasts longer than my organic monster rated at 700 that couldn't hold a SBE 5.3L on wastegate.
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Old 11-30-2020, 09:05 AM
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Originally Posted by SLOW SEDAN
Organic 700ft/lb clutch in a full weight turbo LS car? Hopefully it lasts longer than my organic monster rated at 700 that couldn't hold a SBE 5.3L on wastegate.
I haven't seen the Monster and have never ran 1 so I can't speak to that, but this @Summitracing twin disc is probably the nicest clutch I've put in an Fbody lol. Anxious to get through the break-in period so I can give it boost.
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Old 11-30-2020, 11:36 AM
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Originally Posted by ddnspider
The organic is stiffer than stock and stiffer than the RAM PowerGrip I had. I am glad I didn't go with the metallic version as I don't think I'd want the pedal any stiffer than it is, but it is still very DD friendly as it is right now. I have stock hydraulics with the drill mod.
Friction disc material has no bearing on pedal weight.
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Old 11-30-2020, 11:45 AM
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Originally Posted by stevieturbo
Friction disc material has no bearing on pedal weight.
But it does on drivability. I should have been more explicit. With an already firmer pedal, I wouldn't want to give up any more drivability that typically comes with the metallic disc over an organic.
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Old 11-30-2020, 11:57 AM
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Definitely, an organic these days can hold huge amounts, there really is far less need to go to any aggressive clutch especially for road use. Obviously if you're launching very hard on glued tracks with slicks etc....organic can struggle more.
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Old 11-30-2020, 12:06 PM
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Originally Posted by stevieturbo
Definitely, an organic these days can hold huge amounts, there really is far less need to go to any aggressive clutch especially for road use. Obviously if you're launching very hard on glued tracks with slicks etc....organic can struggle more.
Yup. I was 50/50 on which disc to get and after talking with them I decided to try and push the organic and see how it does.
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Old 11-30-2020, 12:18 PM
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Originally Posted by stevieturbo
Friction disc material has no bearing on pedal weight.
Yes, but generally as the material gets more aggressive, so do the springs in the clutch. That's what I was getting at.
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Old 12-03-2020, 12:58 PM
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Yes direct pedal pressure is one thing but the disks grabbiness definitely plays into how quickly we release our leg. One that's grabby requires a physical and mental adjustment to let out low and smooth. One that's not grabby makes it a little less critical. We're getting into nuance here but trying to slip an 8.5 dual Quartermaster lightswitch for instance requires a workout under the same conditions where the Pro Twin feels more at ease. Hope this makes sense.
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Last edited by Summitracing; 12-03-2020 at 01:03 PM.
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Old 12-04-2020, 08:42 PM
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You can slip 7.25 and 5.5 inch clutches. I see no reason you can't slip a 8.5" one. Pedal effort isn't a big deal either....hell the "stock clutch feel" that erryone strives for is ****. It has no feel....that's part of its problem. Put some damn springs in the pp already. People that don't like a clutch with good feel shouldn't be driving a stick at all.

Master cylinder plays a large part on how the clutch engages as does the pedal ratio.

Tuning is also huge in getting a light clutch to drive better. Throttle crackers and followers should be dumbed down alot or even turned off. With a quick reacting clutch the last thing you need is the car feeling like it's trying to control the throttle on it's own.
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