BUILD THREAD 84 Hurst Olds - TechG8

[techg8]

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

 

[TURNA]

https://www.summitracing.com/parts/rfl-11-001/overview/make/oldsmobile

 

[TURNA]

Cheaper

http://rover.ebay.com/rover/1/711-5...0001&campid=5335822911&icep_item=232355750130

 

[olds307 and 403]

I want to try these the next time, I really the aluminum collector gaskets.
https://www.summitracing.com/parts/mrg-7416g/?tab=Overview

 

[TURNA]

I want to try these the next time, I really the aluminum collector gaskets.
https://www.summitracing.com/parts/mrg-7416g/?tab=Overview

Are the center ports on your heads angled like the gaskets are? I don't believe 307's are.

 

[olds307 and 403]

The picture isn't right but those should be right according applications.

 

[TURNA]

The picture isn't right but those should be right according applications.

Applications say only up to 80? Are the 307 head ports the same?

 

[olds307 and 403]

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]

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.

 

[fleming442]

https://www.jegs.com/i/Percys/760/66039/10002/-1