Pontiac 455 Questions

[87PontiacGP]

The HO/RA exhaust manifolds are scarce but reproductions are made that flow even better than the originals. The stock log type are not very good but a big car 455 manifold would be better than a 301 manifold. Those Edelbrock heads are round port, so round port exhaust would be indicated. Plenty of cams are available, from mild to wild. My last 400 had a Crane 278HMV and was very strong. It needed a vacuum can for the brakes and full manifold vacuum to the vacuum advance to idle well. But it pulled like an ox.

Ok, I'll have to look into HO/RA exhaust, or even reproduction manifolds. Thanks much for all the help Bonnewagon! Much appreciated. :wink:

 

[db4767]

maddogheaders.net for Pontiac G Body headers d-port or round port

 

[87PontiacGP]

maddogheaders.net for Pontiac G Body headers d-port or round port

Thanks much for the site. :wink: