Right on Dave.
Bring the squeeze up on that .640, and some cylinder head mods, along with a 62mm HPI for the cable-drawn models, or a 66mm S&S T/Hog for the tbw bikes, and a D&D Borezilla.
That turns those 124"ers on!!
Scott

 

I see nothing wrong with wanting more. I would love to have one of the chevy 572 ci 720 hp motors in my truck. If I had the scratch I would do it tomorrow. I have a cbr 1000rr with 180 hp at the rw on a dyno and sometime wish it was more. Get after it op with the big motor and come back and give us some stories so we can live vicariously through you.

 

I will do just that however I'm going to wait a few more months for the riding season to be over

 

Dyno day this Thursday comith......Finally...... Not a big inch motor but it sure does feel like one.....will post results then.

 

I agree. Furthermore, I've found that most abrasive people on the internet are lambs when you meet them in person.

 

Sometimes OldEnuf2NoBtr can be a little harsh but rarely wrong. I laugh at his comments because most of the time it's the truth and what others are thinking but not saying. Plus if i had a 103" HO I would want more than the stock output of 81 TQ and 70 HP.

 

Dudes!! You all need to re-read the Ops post, before jumping on the S&S drop ins and ragging on others. The OP wants to know how to make his 103 into a 131 via a stage 1. Whatever he means by 103 & 131... It ain't gonna happen via a stage 1. Let's keep focused!

 

I agree that his post is a bit hard to understand but the way I read (inturpreted) his post, he already has a 103 with stage 1 fitted and he wants to get to a larger capacity. Somehow

He can take it to a 131 cube engine with a lot of work, case boring, new crank, pistons, barrels, better heads etc etc.... Axtells Mountain Motor kits for one will get him there, as could any decent shop do in house, buying in what they need and doing there own machining.

But there is nothing wrong with people suggesting other options, like the s&s 124 for example, which has proven to be reliable and a solid performer, weather it be mild or wild.

So I stand by my 2 cents worth of recommending the 124 as that's what I will do when I tire of my gutsy little 106

 

Took my 2010 Ultra Limited from 103 to 107. 107 CU IN. Revolution Performance Jugs and pistons, Woods Cams, PP Heads with Ceramic coating, SE Tuner, BUB TDX Headers, BUB Stealth mufflers. Dyno I have HP 113, 113 Ft Pounds of Torque. I pull a trailer 2up so I wanted a mid range power band. If you want I can show the dyno results.

 

There have been several focused responses to the OP. The OP was a bit confusing but the OPs question has been answered as well as some suggestions that the S&S 124 be considered as well. I think the OP h as sufficient information to think about what he wants to do now. I did notice that you offered neither an answer or an alternative.