Hi I am considering purchasing a set of 289 C30E heads. The casting number refers to a 63 289 hip with 49.2cc however they don't look to have the spring perches. Anyone know what they may be? Anyone ever seen these before or have any ideas/opinions on them?
Those heads do not appear to have the machined spring pockets ,studs can be threaded so i wouldnt trust that alone .
Are there any other places on the heads with numbers ? There are actually several castings withe the prefix C30E , if there is any other letter past that they are not Hipo
those heads have been reworked, the exhaust ports have definitely been ported, and screw in studs have been installed. i doubt they are factory hipo heads.
Can you give us a photo of the combustion chambers?
Looking at the casting book, there were different C3OE casting variations for the 221, 260, 289, and 289 HP.