big bore kit ?????
Tourer
Joined: Jan 2008
Posts: 278
Likes: 5
From: Glenmora,La
HD Cams with big bore kit
I did the HD 1550 big bore on my FLHT. They had a good motor guy then,and he told me that they normally,recommended replacing your stock cam's with SE-203.or SE-204.have you already committed to HD for your kit? If not you might consider shopping around for it,if nothing else just to educate yourself a little bit bout this.Take the cams spoken about,a SE-204 produces peak ponies around 5800 rpm. That's a rpm range that is high;who want's to run around at 5800?.On the other hand andrew's offer's a cam "TW 21" that is designed to run with stock compression ratio at rpm's range (1700-5200) which means it helps with torque all along that range.Also there are alot of kit's out there that are matched.Edelbrock offers a 95" kit that can get you up to 103 HP/97 ft lbs,also S+S has a good kit also,just piston's,and jugs,ring's,pin's for around $834.00,so just look around,and you can really get the build you want
Ultimate HDF Member
Joined: Feb 2007
Posts: 7,663
Likes: 7
From: Northeast Ohio
Tough question to answer without knowing more. What is the CR you will be at after the install of the pistons. Are you doing headwork or buying HD heads? What is your riding style - single/two up/short hops/long trips?
All these must be factored into the cam selection as some cams come on early, some late, some pull better than others at particular rpms. The cams are ground to interact with a specific compression ratio or range. Some are ground to work well with a certain design head, size of valve, etc.
For anyone just to say "use this one" is not giving you good advice without knowing all the particulars.
All these must be factored into the cam selection as some cams come on early, some late, some pull better than others at particular rpms. The cams are ground to interact with a specific compression ratio or range. Some are ground to work well with a certain design head, size of valve, etc.
For anyone just to say "use this one" is not giving you good advice without knowing all the particulars.
Last edited by Dalton; Dec 14, 2008 at 09:25 AM.
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