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HDWRENCH · Dec 31st, 2011, 06:05 PM

I posted about the dynamic compression on another post. I have pulled several 255 cams out of the dealer installed 103 kit. Many other cams that are a much better choice. The 255 puts the dynamic comp ratio well over what you can really get at the pump today. I know that many think it works but once we get done pulling timing on a custom tune the power you gained up front is lost when the bike is really ready for the street. Not to mention the 255 cam lack duration to the 103 inch engine. Its just ait pump nothing more.

Here is a 103 255 dealer built engine as it came to me. I installed a 54 cam and the gains are right where it should be. And it will run on 91 octane fuel with 10% E, in 115 temps. Not bad for a stock head engine.

Dec 31st, 2011, 06:05 PM	#7
HDWRENCH Start The Engine Join Date: Dec 16th, 2011 Location: Prescott AZ Posts: 25 My Mood:	Re: SE 255 Cams in a 96 CI Softail I posted about the dynamic compression on another post. I have pulled several 255 cams out of the dealer installed 103 kit. Many other cams that are a much better choice. The 255 puts the dynamic comp ratio well over what you can really get at the pump today. I know that many think it works but once we get done pulling timing on a custom tune the power you gained up front is lost when the bike is really ready for the street. Not to mention the 255 cam lack duration to the 103 inch engine. Its just ait pump nothing more. Here is a 103 255 dealer built engine as it came to me. I installed a 54 cam and the gains are right where it should be. And it will run on 91 octane fuel with 10% E, in 115 temps. Not bad for a stock head engine. Attached Thumbnails