09-22-2016, 08:01 PM
Quote:comments by Steve Welte,
Be advised that the 300 Mac saw is 1.5 stroke not a 1.375 like a 49 or like it says on Bob's.
If you are running a 300 in the 49 class it is a no no.
300 and 380 are the same stroke.
If you have a 250, it is a great choice to work with and one of the easist.
You need to spend a couple dollars on the intake and stuffer but why skimp.
It still won't break your wallet.
There are several different approaches to the stepped shaft. Most of them are explained further in the post.
Once you get it correct it can fly.