04-12-2007, 05:16 AM
|
 |
CC Member
|
|
|
Join Date: Oct 2002
Location: Fairfield,
CT
Cobra Make, Engine: HM-2027 / 427 SO
Posts: 817
|
|
Not Ranked
You can knock out the 6 freeze plugs on the block and see what size drill bit shank fits between the cyl walls inside. That will give you a good idea what you have until you get it to the shop for a sonic. A 13/64" drill bit shank is a snug fit in 428 wallcores. 17/64" for 360/390 wall cores. Check at the top, middle and bottom of the cyls. Clean away and crap or crud with a knife so you get a good gauge reading.
G.
|
Threaded Mode
