07-25-2005, 07:41 AM

Rholmes

Senior Member

Join Date: Nov 2001

Location: Salisbury,NC

Posts: 221

RR67GTO have the heads cc'd,or check the casting date.I believe there were 2 different casting dates for the 15's.1968(an advertised 10.5:1 on a 400) and again in 1970(an advertised 10.5:1 on a 455).In both application they were considered "Big Car" and possibly small valve heads.Maybe someone can shed some additional light,but have them cc nonetheless.The 9778822(9773322) presents more of a challenge.Do you have a casting date?Wild guess???64-66 vintage,Roger.

Reply With Quote

« Previous Thread | Next Thread »

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules

Forum Jump

All times are GMT -4. The time now is 05:26 PM.

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

Menu

About Us