1986 E350 exhuast headers?
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I didn't want to spend a ton of money on headers if they didn't end up fitting, but I'd like to be able to get some performance headers for the van. Worst case scenario, I'll just get a header kit and make a set myself. I just wanted to avoid that if possible since that would take much longer to ensure that it fit properly.
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You've got stock heads so hedders will most likely not be worth the expense and trouble..
I don't know what your current exhaust consists of but there are major gains to be discovered just by removing the secondary cat and using a low-restriction muffler..
I see you are using a HEI distributor so setting the curve would be my next step..
curve kit with springs and weights and a pocket scale and a grinder and file along with a dial back to zero timing light, get er done..
http://www.superchevy.com/how-to/97438/




