What manifolds are you talking about in your "news flash"? I was hoping to do an aftermarket header, something with more flow. Is that possible?
After I posted the Ebay auction, I found another manifold on the same site with a part number of 3836968 (right side only, but it will bolt onto the left), listed as 55-56 Chevy passenger car. It was a single manifold, not a pair, but the price was right- - - -$29.00 plus $15.00 shipping. That one's going into the "possibles" stash!
Using headers on anything driven on the street is an exercise in stupidity- - - -If you plan on running the engine fast enough to benefit from the power gain very often, you'll have to sell the vehicle to pay the speeding and reckless driving tickets. Of course, a nice-looking set of eye candy headers will impress the mouth breathers at the car show who don't know any better! The only headers worth having are equal-length tubes for every port, and the tube diameter and length has to be tuned for a gain at a specific RPM. The headers I built for a 440 Dodge tractor pull engine some time ago needed tubes 8 feet long going into a 6" diameter collector to get the low end torque we wanted to get the sled moving well. That engine made a temperature and humidity corrected dyno run of 714 HP at 6500 RPM- - -on one carburetor and gasoline. It cost $15,000.00 to build, and made approximately 50 300-foot pulls before it hand-grenaded. "Going fast costs money- - - - - -how fast can you afford to go?"
Jerry
