Hi all.

Ive not been on here for a while but I have decided to drag my C4 out of the shed and get it back on the road after it has been sitting there for about 6 years lol and as soon I I get all the bits together I will start a build thread.

I am using an LT1 engine that I have picked up and going to mod the manifold and put a small cap dizzy on it and use the speed denisity ECM that is already in the car.
Basic story I am converting it to manual and I am using a 6 speed ZF box that is used in the BMW 330d and Jaguar F type 2.7 tdv6 diesel they are supposed to handle torque of up to 500lbft ( according to people on the BMW forums ) and I am going to keep the engine mostly stock so it should live for a while lol

Yes I know that it would be easier to get a used ZF6 and all of the assoiated stuff required .....BUT ........I cant find what is needed for much less than $2500 and thats even before I add shipping costs to the UK.
The Jag / BMW box are plentiful and cheep here in the UK I have already sourced one which I paid $200 for and if I break it I can soon grab another one lol, it is very similar to the ZF6 used in the 89 to 96 it even shares the same splines on the input shaft, spigot bearing and even the location dowles on the bellhousing are in the same place as the Chevy

I am going to be using a Fidanza flywheel that I had left over from my 383 build from my 1990 but I would like to use a push style clutch as the Jag gearbox has a concentric slave cylinder, so I want to use a pressure plate / clutch from an 84 to 88 ( which I believe is 10.75" ) what I am trying to find out is what is the PCD of the bolt holes on the pressure plate to see if it will bolt onto my Fidanza flywheel, any help here would be much appreciated.

Many thanks
Adi4

 

So what I can say, 84 uses a 10.5 clutch and pressure plate. 85 or 86 and up uses an 11. I am not 100% certain but I would think it should still bolt up to the flywheel....

I can measure my old pressure plate if you'd like.

 

If you could measure your old pressure plate I would be most grateful, and was yours a 10.5 or 11
Many thanks
Adrian

 

mine was a 10.5 but the bolt spacing between the two should be the same.

 

The flywheel I have will support an 11 inch clutch but I want to check the pcd on an early 11 inch before I order one because of the postage cost it's not worth sending it back if it doesn't fit.
Many thanks

 

Hey Adrian, I’d be happy to send you an old one from my ‘86 so you’ll know for sure. Let me know.

 

Hi Ray.
Its been a long time, and if I remember correctly we spoke at the Nationals at Huntingdon .........wow that was a while ago now.

If you could send me your old one that would be awesome, ( I will pm you my address ) and let me know your paypal address so that I can at least send you some money for postage.

Many thanks
Adrian