74 and 80 inch cam choice same or different

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johnjzjz
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Bikes: 1926 Harley JD - 1948 Indian chief - 1942 WLD -
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74 and 80 inch cam choice same or different

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Post by johnjzjz »

its now march - i have 2 46 and one 48 chief motors and gear boxes to re do all the cams have damage from skidding it seems as none have needle rollers just steel roller on steel inner drum on steel pin and worn out lifter pads and lifters

so much crazy info about 40s indian cams out and around you can get dizzy reading it -

some even say ONLY using bonnie on the exhaust will make an Ollie cam pull harder < cant rap my head around that idea as i see that as backwards

Modern ollie cam with std rockers Intake .396 lift 229.5 duration / exhaust .391 lift 229.5 duration lobe center 117 / 115

Modern ollie cam w/ bonnie rockers intake .418 lift 231 duration / exhaust .417 lift 232 duration lobe center 107 / 105

i am liking the ollie with the bonnie for the motors 48 will convert to an 80 inch < am i wrong anyone used both set ups

Note - original ollie w/ bonnie had .422 lift and 234 duration for both lobe center 105 both as well < i believe starklites cam

what do i want --- smooth idle, gearing it up all of them so more midrange to compensate for the taller gearing
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