Originally Posted by BradH
Originally Posted by Bad340fish
Originally Posted by BradH
Originally Posted by BradH
Maybe I haven't searched in the right places, but I haven't found consistent or conclusive benefits documented from firing order changes. It seems to fall under the "it depends" category...

Follow-up...
1. Read this: https://www.enginelabs.com/engine-tech/engine/firing-order-swaps-whats-best-for-your-engine/
2. Save your $$$


I can't do any back to back but my current engine has a 4-7 swap and it is the smoothest running engine I have had. Comp suggested the swap because it was easier on the rear most crank journal and it moves the hot spot of two neighboring cylinders firing closer to the water exit.

Not saying that you won't see ANY benefits. However, for the cost estimates being mentioned above, it doesn't sound like a good "bang for the buck" for the caliber of engines most of us on here build.

I'm as guilty as anyone at spending money on the wrong things.


I don't know that we would have paid extra for it but comp didn't charge any extra on top of the custom grind.

68 Barracuda Formula S 340