1966 Pontiac GTO engine

Tiny
PONTCHEV6370
  • MEMBER
  • 1966 PONTIAC GTO
  • V8
  • 2WD
  • AUTOMATIC
Will using 67 pont. 400 heads on a 66 389 help cooling problems
Friday, July 17th, 2015 AT 12:39 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The heads may not be correct. Pontiac changed the block sometime around then because it went to a 400 from a 389 I forget when they did it. Your only option is to check flow into radiator and try to check a 389 gasket against a 400 one they may be different. Also check your radiator for cold spots with engine off after an overheat. If you feel any cold spots the radiator is bad as it should be the same temp all over and no loose or corroded fins.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, July 18th, 2015 AT 6:29 AM

Please login or register to post a reply.

Related Cylinder Head Content

Blown Head Gasket Test Video
VIDEO
Blown Head Gasket Test Video
Instructional repair video
Cylinder Head Gasket Replacement
GUIDE
Cylinder Head Gasket Replacement
A cylinder head gasket is used to seal the combustion charge between the cylinder head the engine block, this gasket also controls the flow of coolant between the two as...

Sponsored links