gary ,, for a guy that posted he knew nothing about blowers or tuning them suddenly you are a wealth of info.
Bull ****. You have no clue and a a flat lier and or your cruiser buddy cannot tune an engine.
All of what you posted would be the result of a very poor poor engine tune fron someone who has no clue.
Getting a year ouf of a street cruiser that mabe gets driven up to the cruise night and parked, once a week.
And the motor and blower are finished after 1 year. Give it up.
More BS is the BS abut external balance cranks and blowers. First blower motor I did was a 400SBC with a stock cast 400crank.
The crank is still prestine.
Many many 400's and 454's are blown with no problems at all.
You and your cruiser club friends just have no clue how to tune an engine.
Everything you posted is just pure garbage... spule...