Over the years how many sets of 670's, 16's 48's etc., have been butchered up, blown up, cracked from overheating or freezing, piston kissed, valve sank, well you get the idea!
They ain't making these ever again! If you have a nice set, you might consider putting them away and running these modern replacements.
It's time to start saving those original heads for restoration projects.
My dragster has 62's on it that are pretty close to maxed out for d-ports at around 260 CFM. These out of the box as cast street heads flow 289/202 CFM at .600 lift and weigh a bunch less (I'll be weighing them later today).
Let's help keep the past alive as we move into the future.
|