11-23-2010, 10:14 AM
|
|
Senior Club Cobra Member
|
|
|
Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
|
|
Not Ranked
Why it's important to know:
If your changing heads in the future the 427 block will accept valves larger than the 428 bore will allow. If the valves are to large, they simply won't clear with the smaller bore of a 428.
|
Threaded Mode
