Best clutch for my application

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RT Machine
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Best clutch for my application

Post by RT Machine » Wed Nov 22, 2017 11:33 pm

Looking for advice on which clutch size to use on street car 1450kg 400 SBC 550 HP, Autogear M23Z 4 speed, 3.5 - 9 inch rear.
I have a NASCAR Tilton 10.5 inch bellhousing pn. 53 - 501 - 1, also I have an 11 inch 621 GM repro bellhousing, I have not purchased a flywheel or clutch.
I am keen on the better throttle response if using a 10.5 inch flywheel [15kg steel ] with Centerforce Duel Friction clutch assy.
Or am I better off using a 11inch lightened flywheel [ 11kg ] and 11 inch CF clutch
Also can the Tilton housing mentioned above accommodate a conventional 10.5 flywheel ?, and if so, what is the preferred hydraulic release bearing to use with it ?, Tilton or Mcleod type ?
I like the quality manufacture of the Tilton housing, whereas the aftermarket GM housing is super thin and poorly machined [ gearbox pilot hole not concentric ] .
Car wont see much track work only occasional drag racing.
Thanks in advance .

cuisinartvette
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Re: Best clutch for my application

Post by cuisinartvette » Tue Nov 28, 2017 9:54 am

have been using a Centerforce DF for yrs love it.
Smooth engagement holds power well, acts stockish.

RT Machine
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Re: Best clutch for my application

Post by RT Machine » Wed Nov 29, 2017 8:58 pm

Yeah, I have had good results with Centerforce clutches, in different cars, just need to decide on flywheel spec now, I leaning towards the 11 inch

hsv434
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Re: Best clutch for my application

Post by hsv434 » Sat Dec 02, 2017 7:23 pm

Hi. Using a similar setup as you. Street driven SBC gen1 Tilton bellhousing # 53-601. same as yours but in alloy. Richmond 6speed ROD,
Fact…No way a stock type 10.4 press plate going to fit in that bell. This is what I used….McLeod 153T alloy flywheel 560300 with a McLeod RST twin disc clutch 6913-07. Minor grinding required to bottom of the housing of relief and clearance for the ring gear. First used a Howe TOB but didn’t enough air gap, Made 4mm plate between housing and the box. Only managed to have 040’ air gap…..Still not enough but got the car on the road…couple of years later (10plus) updated the TOB to a RAM 78125HD, removed the spacer plate. Purchased a Quick-time block/bell spacer RM6013. Overall pleased how it worked out. Lite compact bell, dead on dialled parallel and concentric. Stock pedal feel and a clutch that will holdup to abuse N/A 434 on street rubber. Good luck with yours. :D

RT Machine
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Re: Best clutch for my application

Post by RT Machine » Mon Dec 04, 2017 6:09 am

hsv434 wrote:
Sat Dec 02, 2017 7:23 pm
Hi. Using a similar setup as you. Street driven SBC gen1 Tilton bellhousing # 53-601. same as yours but in alloy. Richmond 6speed ROD,
Fact…No way a stock type 10.4 press plate going to fit in that bell. This is what I used….McLeod 153T alloy flywheel 560300 with a McLeod RST twin disc clutch 6913-07. Minor grinding required to bottom of the housing of relief and clearance for the ring gear. First used a Howe TOB but didn’t enough air gap, Made 4mm plate between housing and the box. Only managed to have 040’ air gap…..Still not enough but got the car on the road…couple of years later (10plus) updated the TOB to a RAM 78125HD, removed the spacer plate. Purchased a Quick-time block/bell spacer RM6013. Overall pleased how it worked out. Lite compact bell, dead on dialled parallel and concentric. Stock pedal feel and a clutch that will holdup to abuse N/A 434 on street rubber. Good luck with yours. :D
Thanks for info HSV, especially with the clutch fitment issue into Tilton Bellhousing etc , cheers

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