The motor goes into reverse with a DOWN motion of the shift rod.-----The shift rod needs to go down right where the gearcase was smashed.----Hence it will not go all the way down to get reverse.----Time for another gearcase I think.----Your location ?
Perhaps a case of " they look the same , but are not " --------And I believe you might have the wrong distributor cap.----Carefully examine this new one and compare to the old one.
?????----The ignition on a " Fat Fifty "----Was a belt driven , self contained magneto.-----A completely different ignition is found on a 69 model V-4.
Agreed-----Motor RPM / holeshot changes.----Just more proof that many folks to not understand the concept of POWER and LOAD.-----And electric car power consumption.-----
did a test 40 years ago.-----Same boat / motor.----Same day within an hour.-------A 19 " RPM 5800 , speed 54 MPH.----21" speed 54 MPH at 5300 RPM----23" speed 54 MPH and 4900 RPM.
That would be a carbureted engine.-----How did it run for you last season ?----They sound good on 5 of 6 cylinders.----Post actual compression values here.---Does spark jump a gap of 3/8" pm each lead?