I don't have the tools to accurately measure chamber volume, I was hoping someone on this site could tell me if these are 75 cc or ?

Thanks
Craig

If they’re as from Ede(no extra milling), those are the 88cc head.

They start out as the 84cc casting, then grow 4cc’a when they get machined into the open chamber.

Thank you, that is what I was hoping for... I got a set of nearly new L2295 pistons, rings & rods for a great deal, and was worried that the CR would be way out 91 octane range if they were 75 cc.

Go to a feed store or drug store and buy a 50CC syringe and use it to measure the CC in the chambers, level the head front to rear and side to side and fill it with alcohol until it starts to run over the sides of the chambers with the same spark plug you're going to run in the motor
If you can find a small (5.0x5.0 inches) flat piece of thin plastic to use to seal the chamber with chassis grease you can drill a small hole on one side to use it to fill the chambers without worrying about it spilling over

For those interested Jegs sells a CC measuring kit for about 15 bucks IIRC.