headers to suit D port heads in 69

[toddoky]

Originally Posted by 3_z28camaro

I believe I used this set for the LT1 swap in my '71 Camaro. They are listed as fitting first gens as well. Although they have a 1-5/8 primary.

http://www.jegs.com/i/Hedman/500/66609/10002/-1

Summit Racing has a large selection of headers under the Gen II small block engine family.

Yep, those appear to be a proper D-port design although they are a mid-length header that will be sufficient for some and not for others.

[Sieg]

Doug's makes a 1-3/4" primary SAP-port part #D368 that I used with my AFR heads on my '69.

This appears to be the Gen 2 version. The SAP port design didn't create any interference on the AFR ports.

http://www.summitracing.com/parts/do...t/model/camaro

[toddoky]

Originally Posted by Sieg

Doug's makes a 1-3/4" primary SAP-port part #D368 that I used with my AFR heads on my '69.

This appears to be the Gen 2 version. The SAP port design didn't create any interference on the AFR ports.

http://www.summitracing.com/parts/do...t/model/camaro

The folks at AFR were thinking clearly when they designed the large sealing surface into that cylinder head as it greatly helps minimize the sealing issues that arise when you put stock port headers on D-port GM heads. Because the machined sealing land is raised off of the cast surface of the heads and have a narrow margin, stock port design headers/gaskets commonly leak and/or blow out at the bottom of the ports. D-Port specific headers eliminate the leak/sealing issues on the GM L98/LT4/LT1 and Fastburn heads and also remove the step that forms at the top of the ports on those heads when stock port headers are used on them.

[Angry]

Ive over laid the gaskits & the old headers will NOT seal the new ports,
Theyre bordrr line now with std oval ports.