Firing order in sync with he cam?
I put a 351 Windsor cam in my 302 and had to change the firing order.
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What does the 4/7 swap cam do?
Image result for chevy 350 different firing orders due to cam?
If the engine gets a 4-7 swap cam, then #3 and #7 fire consecutively and go into the same collector and #2 and #4 fire consecutively and flow into the same collector. Therefore, a 4-7 swap changes the exhaust dynamics on both sides of the engine.Apr 25, 2017
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