SBC Flywheel Options - Thickness

[Ducs]

I am working on installing a Super T10 behind a SBC in my Malibu and I've ran into a bit of an issue. I need about 0.25" more space between my clutch pressure plate fingers and my hydraulic throw out bearing. My setup is:

- two piece main rear SBC
- GM 3973456 N flywheel - Measured thickness from crank mounting flange to friction surface = 0.97"
- McLeod RST Twin Disc 6911-07
- Howe Throwout Bearing 82870
- 79 F body Super T10
- GM 464697 Bellhousing

Considering all my options, I am pretty sure I need to look into a 'thinner' flywheel or reduced height throwout bearing. The Howe piece I have is 1.688". There is also Howe 82876 which is listed for T5 and compressed height on it is 1.513".

Does anyone have real world knowledge on 'thinner' flywheels or Howe throwout bearings ?

I can't find any 'thickness' info on McLeod 460122, their tech support didn't t back to my inquiry.

RAM 1501 is .850" and 1501LW is .735"

 

[UC645]

If I’m understanding your numbers correctly, if you need a 1/4 inch (0.250):

https://www.summitracing.com/parts/icb-551820-250/make/chevrolet

Bellhousing spacer from ICT Billet. They also make a 1/8 inch (0.125) spacer if you can tighten your setup up (close up the gap) in case I’m reading your numbers wrong.

 

[Rt Jam]

If the problem is throwout bearing preload. I'd talk to McLeod about that. I had a McLeod in a T56 Foxbody. I'm pretty sure it was threaded to set preload.

 

[bracketchev1221]

I would talk to Mcleod about what throwout bearing they recommend for their clutch. But secondly, I would reconsider putting all that money into a High hp clutch and using a stock bellhousing and flywheel.

 

[ELCAM]

If you look at Howe's website it says the 82870 is "Designed for racing classes that require a stock type clutch."

 

[Sweet_Johnny]

I agree. I can also personally vouch for ICT Billet products and service- I work right down the street from them and have made several purchases.