slagburn
11-12-2005, 08:18 PM
I'm trying to find info about 993 heads, or 321993-1 to be specific. I have a set that's been gone through but can't find any flowbench numbers for them.
Are they a good flowing casting?
also. These heads, at 61cc after porting, with a flattop piston with valve reliefs should be 12.5 or so in a 401 right?
Are they a good flowing casting?
also. These heads, at 61cc after porting, with a flattop piston with valve reliefs should be 12.5 or so in a 401 right?