The Y block has about the best firing order there is. On a Chevy, it's the 4/7 swap which give it the Y block and flathead firing order. It requires a different cam. You can't just swap the plug wires. They have to do it to make more power.


Lawrenceville, GA

I have readed the Y block firing order change topic. If i remember right the question in the topic was how to change the firing order on the y block to the gm firing order (Later firing orders). Well, i have a question in the other direction. Does it work to change the firing order on gm engines to the Y firing order ? And in that case, how does it work out ? What have to be done ? Is there some where else on the web i can read more about this theme, it realy was interesting to read, and i want to learn more about it.



Best regards

Robin Norway