Discussion in 'High Tech for Old Iron' started by midwestgs, Apr 17, 2017.
What is the reason for this better CC?72 455 with 67 430 heads
I'm not sure I have seen any logical reason to swap older 400-430 heads on (as long as they are stock vs stock). 430 heads would have additional oiling for solid rockers that isn't needed on a 455 with hollow pushrods.
If you purchased the engine like this, it may be a few things.
1. Previous owner had these heads worked on and they are not stock.
2. Previous owner trashed the stock heads and needed replacements.
3. Previous owner lost a race to a guy who had a 430
Didn't you ask this already?