View Full Version : Headers for small block 1976 K20?
06-13-2012, 02:24 PM
I've been having trouble trying to find headers for my truck. Used to have 400 small block but now has 5.7 350. I've looked on Summitracing but it seems like their making it harder then it needs to be. Trying to find Hooker if I could. Also, what exactly is the difference between the 3-bolt flange compared to the ball and socket flange like what Heddman uses on their headers?
06-13-2012, 03:08 PM
http://m.summitracing.com/search/year/1976/make/chevrolet/model/k10/department/exhaust/part-type/headers/engine-size/6-6l-400/drivetrain/4wd 69 results...
6 from hooker...
06-13-2012, 03:26 PM
Those are all for the 400 small block..I have a 350
06-13-2012, 03:27 PM
I bought mine from summit. Headmans.
06-13-2012, 03:30 PM
I was looking at heddmans but what is the difference between 3-bolt flange and the ball and socket flange. I've heard people say that the ball and socket flanges are no good. I don't know how true that is but that's just what I've heard.
06-13-2012, 06:48 PM
400, 350, 283, all same. A small block is a small block. Just get the correct headers for straight or angle spark plugs and you are good.
Three bolt flanges have flat mating surfaces and use a gasket to seal them together. Ball and socket is just what is sounds like. The tangents of the ball and socket coming together make the seal, nothing extra required.
06-14-2012, 02:36 PM
Ball and socket is a better fit, and less likely to leak. And just like BasicBlack said, 400, 350, 305, 283 are all the same. The only difference comes in the years, is the new 350 you have an 87+ or 86 down. The heads changed, but I can't remember if the manifold mounting bolts changed.
I'd call heddman headers and deal with them direct and they will send you the exact headers you need.
06-26-2012, 11:34 AM
... I'd call headman headers and deal with them direct and they will send you the exact headers you need.
I agree with calling the company you want. It's actually surprising, some companies still have real customer service and they will help you find the right part that will work for you. It's always worth a try. The worst they will say is, sorry, you have to contact a distributing shop of our products. Then you have your next step (they may even locate a local dealer for you that can help you with fitment questions) :D
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