are these heads worth anything? i read some other posts and people are saying compression ratio is hurt swaping from early 289 heads to these 302 heads?
they make great boat anchors. they are among the worst factory small block heads out there. putting them on a 289 will definitely kill your compression. even going to a 69-70 351 windsor head is going to drop it about 1/2 to 1 full point and the d80 head will be close to points and possible more.