Right headers for a 67 pontiac
I just bought a 1967 Pontiac Lemans from a neighbor that has Edelbrock performer RPM heads, Pontiac 400. My neighbor said he paid over $1000 for the headers (that are rusted now) . The headers that are on there now have an odd layout because of the clearance issue with the heads.
Cylinders 1 and 2 pipes go forward and under the cross member frame.
Cylinders 4, 6 3, and 5 are routed the normal way you would expect headers.
Cylinders 7 and 8 are routed into the wheel well then back to join the others.
Because 7 and 8 are routed Ridiculously through the wheel well most tires today (other than skinny 14") will hit the header pipes from cylinder 7 and 8.
My neighbor said he had these pipes made (9 years ago) beacuse of the Edelbrock head and the limited options.
Can anyone recommend an option for new headers?
My experience with big block SS 69's Camaro & Chevelleproved the bigger dia. tube headers aren't alwats better. 2"dia. Hooker headers on the Camaro & only 1 & 3/4" dia. on the Chevelle, but the Chevelle made more hp.! So some back pressure is better for scavaging (street). And on the drag strip with open exhaust through the collector only is a different story. Look for "chambered exhaust pipe" too they are like sausage crimped every 12" with a perforated baffle inside. Some co. are starting to make them again. High heat header paint them & clean prep them with lacquer thinner first AND hang them up & DONT touch them!!! You fingers have oil on them & will cause rust spots. If $$$ is in your budget have them Jet Hot Ceramic coated.
Oh & fender well headers for track,or no room. And or clearance problems with steering box or clutch linkage. Between the frame rail headers look cleaner & out of the way, (street). Beware hot fender well headers burn you & spark plug wires. Spark plug stays & separators or burn proof wires or braided sleeves are needed.
Have new custom headers made. It's not that difficult by an exhaust or speed shop with a tubing bender. Start with a pair of thick exhaust flanges.
James thanks for your replies. I think having them made would be the surest way of getting something that will fit.
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