[jer66nova]

Anybody here have experience with 4-7 firing order swap cams thinking about one for my stroker combo also small base circle around 580-600 lift solid roller

 

[1quik69]

Check with "the big al". I believe he has done this.

 

[D-Man]

I was considering the swap when I got the custom roller for my 406. After talking with Earl, Harold and several others it was decided that it was a waste of my money that could be better used somewhere else in the build.
Earl even spoke of making the swap to the LS1 firing order on a build that didn't find any more power.

From what I gathered, on an "ALL OUT" build (especially heavy nitrous) the 4-7 swap might get you better cylinder-to-cylinder fuel distribution, but nothing 99% of the builds out there will ever get into.

 

[bowtie0069]

I did dyno testing a few years back on my 414" with 2 Lunati's--it wasn't worth much, but since I got a lot of free stuff..........
Warren Johnson will tell you the dyno will show nothing, but the car will go down the track a little faster...?? It seems to be ever so slightly smoother, but if it costs more, don't bother.