As far as I know the master bore is 11/16"

To the best of my knowledge, this is what we have come up with...

All Masters = 11/16"
Master throw = 1.5"

Getrag 5sp slave = 15/16"
Getrag 5sp slave throw = .75"

Muncie 4sp & Isuzu 5sp slaves = 13/16"
Muncie 4sp & Isuzu 5sp slave throw = 1"

NOTE: these are GM Parts (factory specs)
NOTE: these throws are approximate (arguement sake)

One thing I would like to know is, the aftermarket cast iron slave bore size.....

Aftermarket Getrag 5sp slave = ?"
Aftermarket Muncie 4sp & Isuzu 5sp slaves = ?"

And while were at it, might as well include the aftermarket master bore size as well.

Aftermarket early master = ?"
Aftermarket late master = ?"

They should be the same, but you never know.

[This message has been edited by Skybax (edited 03-24-2005).]

I just put an aftermarket slave and master on my car... it isn't working right now, but I'm not sure why. I sure would like to know those bore sizes though.

quote Originally posted by Skybax: As far as I know the master bore is 11/16" To the best of my knowledge, this is what we have come up with... All Masters = 11/16" Master throw = 1.5" Getrag 5sp slave = 15/16" Getrag 5sp slave throw = .75" Muncie 4sp & Isuzu 5sp slaves = 13/16" Muncie 4sp & Isuzu 5sp slave throw = 1" NOTE: these are GM Parts (factory specs) NOTE: these throws are approximate (arguement sake) One thing I would like to know is, the aftermarket cast iron slave bore size..... Aftermarket Getrag 5sp slave = ?" Aftermarket Muncie 4sp & Isuzu 5sp slaves = ?" And while were at it, might as well include the aftermarket master bore size as well. Aftermarket early master = ?" Aftermarket late master = ?" They should be the same, but you never know.