1972 Dart Swinger Header

62toad said
I’m thinking of going with a stock cast iron exhaust manifold. Would the following casting numbers fit this engine, 3830204-2 and 3870055. They have a date code of 1976.
View attachment 1716115576

Looks to be center and rear exit like my 1973 340 ones.
The head pipes on my 1973 ones are flat and cone on other.
Here's a,shot of them slight port and surfaced by a friends machine shop. For comparison.

Yeah i messed up ported and then coated, then decided to have surface cut so i knew they would be leak free. As you can see hit them on a few passes. But is on back side where finish is cut off. I am an idiot. Was kinda hard to jig it up to cut.

Just make sure you give TTI or Accurate the numbers so they cam make the head pipes right. They should know for sure