BUILD THREAD 84 Hurst Olds - TechG8

techg8

techg8

Master Mechanic
Feb 29, 2012
403
143
43
replaced the 6 1.5" freeze plugs with new brass. coated the edges with rtv. should seal up nice.

whats a good set of header gaskets for this 307? Looks like the papery ones in use previously had some pretty significant leaks at the center ports
 
olds307 and 403

olds307 and 403

Comic Book Super Hero
Oct 14, 2008
3,626
1,537
113
Melville,Saskatchewan
TURNA

TURNA

Geezer
Jul 24, 2009
5,964
7,334
113
Socialist NY
olds307 and 403

olds307 and 403

Comic Book Super Hero
Oct 14, 2008
3,626
1,537
113
Melville,Saskatchewan
The picture isn't right but those should be right according applications.
 
TURNA

TURNA

Geezer
Jul 24, 2009
5,964
7,334
113
Socialist NY
olds307 and 403

olds307 and 403

Comic Book Super Hero
Oct 14, 2008
3,626
1,537
113
Melville,Saskatchewan
They have the same bolt pattern. His 5A heads have similar sized ports with a very recessed center crossover port. Your 7A heads have smaller round ports but I believe regular gaskets will seal.
 
DRIVEN

DRIVEN

Geezer
Apr 25, 2009
5,085
3,896
113
Owyhee County
Wow! Just binged the whole thread. Very cool car.
Sounds like you're putting it back together with headers. I vote for Thortons and dual exhaust.
 

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