80" 80HP ( Winter thread)
Stellar HDF Member
Joined: Aug 2018
Posts: 2,353
Likes: 2,568
From: Milwaukee, WI
they know my bike, I was drag racing ( for fun) locally, a Springer turning 12.3 is a pretty quick bike
Thread Starter
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Seasoned HDF Member
Joined: Oct 2019
Posts: 10,668
Likes: 7,259
From: OH
[QUOTE=98hotrodfatboy;20369577]Not sure the crank pin will hold up that long... I had mine at 97/97 and it sheared the crank pin..
No matter how many times I see that pic, I still cringe ..
No matter how many times I see that pic, I still cringe ..
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,008
Likes: 7,541
From: Poolville
[QUOTE=eighteight;20369728] Yeah me too.. good thing I was drunk when it happened. A little easier to accept..
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
Ouch, that hurts. Drunk or not that hurts! 97/97 in an 80 is rockin. Part of me would like to have an 80 to build. Always wanted to do a hard tail chopper around one just for fun. My achin' *** body wouldn't be able to ride that horse for long but... be fun to build and hot rod around town on once in awhile.
Our local law tends to look the other way within reason when it comes to that sorta thing.
Our local law tends to look the other way within reason when it comes to that sorta thing.
Road Warrior
Joined: Mar 2013
Posts: 1,923
Likes: 587
From: Alorton, Illinois
I would reconsider your build. If you want a 5500 redline. I would focus on a cam not for top end hp but mid range tq that wont fall off until right after redline. No reason to pick a cam that will pull to 6800.
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Seasoned HDF Member
Joined: Mar 2010
Posts: 21,008
Likes: 7,541
From: Poolville
This is why I suggested the EVL 3010. Smooth power transition that still holds it's own to 5200 rpm,
Road Warrior
Joined: Dec 2015
Posts: 1,826
Likes: 1,046
From: Southwest Desert
Your build parameters can definitely include new heads, adjustable aluminum pushrods, (saves valve train weight) and lifters. You don't need roller rockers yet. A good investment in case you want to build more in the future. I would go with a flattop piston with minor reliefs. You won't need to shave the old heads, and you don't need the compression for your expectations, and it will go easier on your bottom end. Let the engine flow better with aftermarket heads, cam and pistons, air cleaner, exhaust and ignition. (Don't overcam this setup!) Keep your jugs. Get Jims lifters to buy cheap insurance. And change the cam bearing too. A carb jet change for sure. The CV will handle that HP all day long, and its reliable, and will start right up. Less tuning issues whether you are in the mountains or the lowlands. That was the standard build in the 90's and it ran pretty well and reliably. 
Last edited by SirHarley; Jan 6, 2022 at 07:33 PM. Reason: info addition