I’ll start off with a few facts , to end all the ‘why would you want to do that’ type of responses.
I’m doing a restoration on an 85 Mustang, the stock iron heads and numbers matching block matter to me visually.
The rotating assembly will be a 331. I could do a 306, but the price is almost the same, so I’ll take the extra cubes.
It’s not budget based, so if it’s as expensive to port/build E-5/E7 cores but not have the same power as AFR or Trickflows that’s ok.
Pedestal rockers will be retained, the stock 4v intake will be ported as well.
So, the question, who actually does CNC porting on stock iron heads anymore, and has a legitimate reputation for quality work?
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