1935 Terraplane head problem!
I have a 1935 Terraplane built Jan 1935 where the head has deteriorated to the extent it needs replacing because the water holes are too corroded. The spare heads I have are of A DIFFERENT COMBUSTION CHAMBER- mine has a shallow chamber and marginally wider and longer and the replacements are deeper and narrower. Can anyone tell me the difference please? could the replacements be 1934 heads and will I lose too much power? Regards Ern.
In addition two part heads with aluminum lower head with combustion chamber and the upper with water jacket.