Heads 66&68

[green56]

I would like to know if the water jackets are different from a 66 and 68 heads with a 289 eng just wondering if that is whey i am over heatin g in summer when tem p is high and humidity is high i put in another fan to help cool it down

 

[sportyworty]

The water passage configuration is the same. Possibly you put one gasket on upside down. This is a common mistake as there is a front and back. A reverse install will cover the water jackets on one end.

 

[green56]

heads

What if the weather is 60 out and you don't over heat does it still mean that the gasket are wrong?