602 exhaust

[Fox_hunter42]

Do the 602 motor prefer smaller tube and collector headers. We have 1 3/4 tube, 3 1/2 collector headers, would I benefit from mufflers

[Fox_hunter42]

Someone must have some knowledge

[brad hibbard]

I have seen the big tube big collector stuff be successful but usually only on a track where you don't have to get out of the gas

watching how the power works in these engines from a dyno standpoint---the smaller header is much better

1 5/8 to 1 3/4 step does work well with a 3 inch collector

mufflers will only be a band-aide and could easily be worse without testing

hope that helps some
Brad

https://www.race-1.com

[Fox_hunter42]

thanks brad, that's what I thought