Originally Posted By greendart408
His motor has slowed a bunch, something is up, be it parts in the motor worn, which as little as you use it I find that hard to believe, or your tune up is off. Mike, do you loosen rockers in your yrs of no use or atleast turn motor over frequently?

I think the valve springs are the culprit, there have been some times I have not backed the rockers off but I have always turned the motor over
tune has always been a couple jets either way since day 1
motor will be out on Monday to take a look

footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105