Clutch size?

[429bossman]

On a 1970 440 6 pac GTX is the bell housing aluminum or cast iron and what is the clutch size in inches in a OEM car?

 

[cudajunction]

10 1/2 aluminum

 

[PurpleBeeper]

Cudajunction is correct. However, if you're not building a "correct" car, then you should consider the 11" clutch (more surface area holds better). I "stress cracked" my aluminum bellhousing twice before I went to a Lakewood, fyi