To Big Bore or not?
Former Sponsor
Joined: Jan 2009
Posts: 19,364
Likes: 40
From: Los Angeles, CA
If you are going to bother to do a big bore, you might as well do cams at the same time. That way you get the most bang for your buck. Get a friend, a service manual and build it yourself. It's more fun and you learn something too, not to mention save all that money on labor.
Drew
Drew
Outstanding HDF Member
Joined: May 2007
Posts: 2,754
Likes: 4
From: GA
My experience on the 96" motors. I had a Street Glide that we did a build on - 103", head work, TW6-6 cams, shaved the heads (10.2/1 compression), air cleaner, exhaust, etc., and it came off the dyno at 105/118. Cost about $5k.
For about half of that, we put Andrews 26 cams, a Big Sucker and Rinehart duals on my wife's Street Glide - came off the dyno at 88/98.
If we were at a dead stop and hammered them, I could walk away from her, but in real riding if I jumped on the throttle, she would be right there with me. You really had to pound it to see the difference. Basically, it changed my mind completely about chasing hp with big displacement. For my FLTRU (103"), we are just doing TW-555 cams and changing out the exhaust.
And, as somebody else said, anybody on a 600 class sport bike will blow you away any way.
For about half of that, we put Andrews 26 cams, a Big Sucker and Rinehart duals on my wife's Street Glide - came off the dyno at 88/98.
If we were at a dead stop and hammered them, I could walk away from her, but in real riding if I jumped on the throttle, she would be right there with me. You really had to pound it to see the difference. Basically, it changed my mind completely about chasing hp with big displacement. For my FLTRU (103"), we are just doing TW-555 cams and changing out the exhaust.
And, as somebody else said, anybody on a 600 class sport bike will blow you away any way.
Stellar HDF Member
Joined: Nov 2004
Posts: 3,156
Likes: 41
From: So Cal
Big Bore alone vs cams alone, cams give you a better Hp/Tq increase. But if you can do both together you benefit more if you select the correct cams.
If you are going to use HD parts go with the Se 204 cams and up grade to the SE Hyd Tensioners and oil pump.
If you are going to use HD parts go with the Se 204 cams and up grade to the SE Hyd Tensioners and oil pump.
Club Member
Joined: May 2007
Posts: 145,895
Likes: 821
From: 40 miles Northeast of Indy..
Heres my 07 heritage with stg1, sert, andrews 26h's dyno sheets.
ones stock and the other after work done.
Ur 88 wont be very much different from the 96er on TQ or HP..
Cams and new lifters, labor and dyno for $935 two yrs ago..
ones stock and the other after work done.
Ur 88 wont be very much different from the 96er on TQ or HP..
Cams and new lifters, labor and dyno for $935 two yrs ago..
Last edited by oct1949; Feb 14, 2018 at 03:57 AM.
Outstanding HDF Member
Joined: May 2009
Posts: 2,932
Likes: 32
From: Broomfield, CO
Don't forget that you'll also want to have some head work done to increase the size of the intake and exhaust valves for improved airflow/combustion in the chambers. That along with cams and bored to 95" will give you all the torque and power you will need.
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