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Stock 305 clutch size?

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Old 07-21-2002, 09:18 PM
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Stock 305 clutch size?

Does anyone know what the stock clutch size is for a 305? I can't find it in my manual, and I've noticed that there are 10.0", 10.5" and 11" versions available. I THINK it's 10.5" but I'd like to verify that....

Thanks!
Old 07-21-2002, 09:32 PM
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My '83 Z W/LG4 had a 10.4" disc and a 153 tooth flywheel.
Old 07-21-2002, 09:39 PM
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Just to be safe, you could do like I did and buy clutch kits for
the 10.4" and 11" and return the kit you don't use. It is
possible that your H.O. might take the 11" unit.
Old 07-22-2002, 07:25 AM
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Car: 4
Engine: 6
Transmission: 5
It's 10.4", often called 10½"... no improvement in the HO cars unfortunately
Old 07-23-2002, 02:06 AM
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Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
McLeod makes an 11" version that works great. The others are 10.5"...
http://www.mcleodind.com/
Old 07-23-2002, 06:50 AM
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Hmm- sounds like I'd be better off waiting to pull the engine first... but chances are I've got the 10.5", right?

I did wonder if the HO option would've given me a larger clutch- guess not....
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