L6's with Offenhauser 4 barrel

['68OrangeSunshine]

Originally Posted by old51sedan

Just curious how many of us are running a 250/292 with an Offenhauser intake and a 4 barrel carb along with cast iron headers. Mine is cold blooded as can be so I just ordered a plate to mount under the carb. It talks about running water through it to warm things up. My idea is to run the exhaust vapors through to do the same thing. Would appreciate any input.

On my 292, I have the Offy intake and Clifford Headers. Four Bbl Edelbrock Performer EDL-1404, 500 CFM. I have no carb heat set up.
Running in Southern AZ, I don't think I need it. But it does perform better in high summer -- when the Snowbirds are longgone.

[old51sedan]

Originally Posted by '68OrangeSunshine

On my 292, I have the Offy intake and Clifford Headers. Four Bbl Edelbrock Performer EDL-1404, 500 CFM. I have no carb heat set up.
Running in Southern AZ, I don't think I need it. But it does perform better in high summer -- when the Snowbirds are longgone.

I received the plate, now I believe I'm going to drill a hole in each one of the exhaust pipes just below the headers and weld a nut on similar to the way they install an oxygen sensor , then run some 3/8 copper to the plate. This is what I used on my 51 sedan and it worked well.

[MikeB]

Originally Posted by old51sedan

I received the plate, now I believe I'm going to drill a hole in each one of the exhaust pipes just below the headers and weld a nut on similar to the way they install an oxygen sensor , then run some 3/8 copper to the plate. This is what I used on my 51 sedan and it worked well.

Have you thought about a way to block-off that tubing when the engine warms up? Might be something out there that would work, like one of the 80s emission control doo-dads.