Hydraulic slaves, big block and small block

[boffer8]

Hi all,

Was wondering if anyone knew what the internal measurement (clutch shaft hole) for a big block gearbox hydraulic slave was and if said slave had the same mounting hole dimensions as a small block (f13) hydraulic slave?

Not sure what big blocks have a hydraulic slave? F18/20?

Cheers
Ben

[blue_peg_16v]

Don't know the sizes but know they aren't interchangeable big block to small block as I had a new big block one gave it to Dave to run on his combo diesel but was different so he had to order a small block one

The slave I had came on a new f18 I got for peanuts that's never been run so is sat in the garage waiting to go in the loon

[boffer8]

Hmmm that's a shame as my clutch shaft won't fit through a small block (F13 etc) hydraulic slave as the fold of the metal in its construction means it won't fit, I had planned to open it up but with the seal behind this Im not able to and it doesn't seem possible to take the seal out, open it up and then refit or fit a new seal, speaking I said seal anyone know if it's possible to get a replacement without having to get the slave?