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#2452600 - 02/16/18 12:37 PM What clutch for t56 with higher hp in quicktime bell?
Silver70 Offline
I Live Here

Registered: 02/01/03
Posts: 18220
Loc: Rust Belt, SW PA
What clutch are people running with t56s behind higher hp gen 3 hemis using quicktime bells?

I know they require a 130t flywheel and recommend a 10.5 gm clutch, but what about people running engines like a hellcat with 700+ hp? My understanding from my research is a twin disc will not fit... but I would think a smaller 9.5ish size twin would. What about single disc options?

I was looking at a mcleod street extreme ceramic disc, anyone ever run this clutch?
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#2452612 - 02/16/18 01:00 PM Re: What clutch for t56 with higher hp in quicktime bell? [Re: Silver70]
RylisPro Offline


Registered: 06/18/07
Posts: 2328
Loc: NorCal
I don't make Hellcat power so no actual feedback from me. Looking at a hellcat forum I found the BadBoyzz twin or triple disc setup.
http://bbgspeed.com/type/bbghcclutchkits/
Maybe worth looking into
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#2452753 - 02/16/18 05:13 PM Re: What clutch for t56 with higher hp in quicktime bell? [Re: Silver70]
Silver70 Offline
I Live Here

Registered: 02/01/03
Posts: 18220
Loc: Rust Belt, SW PA
Those definitely won't fit a quicktime. I looked around and found blowproof bells for hellcats and they are much bigger than the ones quicktime sells.

Guess if you have to cut the floor, wouldn't matter to cut the firewall too. But someone out there has to know of a proven smaller clutch that would work by now.

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#2452776 - 02/16/18 05:59 PM Re: What clutch for t56 with higher hp in quicktime bell? [Re: Silver70]
RylisPro Offline


Registered: 06/18/07
Posts: 2328
Loc: NorCal
Which Quicktime bellhousing are you using? There are a few diffrent part numbers that fit Gen3 Hemi to T56.

RM-8074 fits small block to T56 Magnum and is behind my Gen 3. Height = 6.465

RM-6076 small mopar to LS1 T56 height = 5.93"

RM-8077 Gen3 to Viper T56 height = 6.465"

RM-8081 Gen3 to Hydraulic T56 height = 7.339

RM-8078 Gen3 to Mechanical T56
height = 5.525

You may need to get a different bell?
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#2452830 - 02/16/18 08:09 PM Re: What clutch for t56 with higher hp in quicktime bell? [Re: Silver70]
Silver70 Offline
I Live Here

Registered: 02/01/03
Posts: 18220
Loc: Rust Belt, SW PA
I have the 8077, it's rh starter location, but my headers will be facing forward, so no issue there.

Found this pic:

http://www.speedysgarage.net/challengerw...date_02_web.jpg

I think that's why I read previously a twin disc wouldn't work... cause the post was about using a twin built for a challenger thats on the left of the pic and they use a different style flywheel. I was thinking a 6913-07 mcleod would work and from that pic, it sure looks like it'd fit.

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#2453031 - 02/17/18 10:40 AM Re: What clutch for t56 with higher hp in quicktime bell? [Re: Silver70]
72Swinger Offline
master

Registered: 02/23/11
Posts: 4302
Loc: Nebraska
The 6913-07 is what I use with an 8074 bell. The bell you have may need the thicker new Challenger style flywheel because of the depth.
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#2453081 - 02/17/18 12:47 PM Re: What clutch for t56 with higher hp in quicktime bell? [Re: Silver70]
Silver70 Offline
I Live Here

Registered: 02/01/03
Posts: 18220
Loc: Rust Belt, SW PA
Big thing was knowing if that clutch will fit helps me a lot. I read about the challenger specific clutch being too tall and would need an additional spacer cause of the splined part of the input shaft would bottom out on the disc.

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#2453821 - 02/19/18 07:53 AM Re: What clutch for t56 with higher hp in quicktime bell? [Re: Silver70]
BlakDak71 Offline
member

Registered: 10/13/13
Posts: 25
Loc: Michigan
I'll be running a McLeod RXT Twin Disc Part number 6923-07. This is good for 1000hp and bolts onto a 130t flywheel, fits inside a the QuickTime RM8074 and 8077.

I had good luck with the a lower cost McLeod behind my 392 as well, but a twin disc is definitely needed for the power level I'll be at now.

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#2454150 - 02/19/18 06:35 PM Re: What clutch for t56 with higher hp in quicktime bell? [Re: Silver70]
Silver70 Offline
I Live Here

Registered: 02/01/03
Posts: 18220
Loc: Rust Belt, SW PA
I may go with the rtx also.

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#2457109 - 02/24/18 10:51 PM Re: What clutch for t56 with higher hp in quicktime bell? [Re: RylisPro]
RylisPro Offline


Registered: 06/18/07
Posts: 2328
Loc: NorCal
I was doing research and found that
RM-8081 fits Gen3 Hemi to hydraulic T56. height = 7.339

RM-8078 fits Gen3 to Mechanical T56
height = 5.525

These bells are deesigned for late model Challengers and have the starter on opposite side of earlier small block Mopars

I wrote the wrong spec on my post above and updated it
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#2457131 - 02/24/18 11:45 PM Re: What clutch for t56 with higher hp in quicktime bell? [Re: Silver70]
Silver70 Offline
I Live Here

Registered: 02/01/03
Posts: 18220
Loc: Rust Belt, SW PA
I see those are the numbers shown on the holley website. Which I assume would be the correct ones. I looked at jegs before and they had different numbers.

I believe you typed the 8087 wrong and it should be rm-8078. 8078 says for gen 3 hemi to ford t56.

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#2457135 - 02/25/18 12:09 AM Re: What clutch for t56 with higher hp in quicktime bell? [Re: Silver70]
RylisPro Offline


Registered: 06/18/07
Posts: 2328
Loc: NorCal
Whoops my bad haha! Typo switching back and forth on the webpages
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www.rylispro.com
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Tremec T56 Magnums & Quick Time bells
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