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which zippers heads do you have, the 2" intake or the 1.9" ?
I'm using the 400 in my 113 and like them, no real hit just gobs of smooth torque. I would like to see what the TW-5 would do. Rosa's has used the 5 cam on big motors with impressive tq.
<<the heads are 2" intake ,thanks pete>>you have high output heads and IMHO you should make your 120 a high ouput build. but if you had those heads on your 106 with a tw5 then you were really wasting the mid/top potential of your heads. the tw408 on a 120 is probably comparable to the tw5 on a 106 and would probably be right for you. if i was doing a 120 with high output heads i would be looking at woods tw9fg, tman 650 or S&S 640. Raise the CR to pick up the bottom and let the cams work with the heads to produce the power.
Pete,Either a 9B or 408, and hang on. Scott
Quote from: Hillsidecyclecom on Thursday, September 10, 2009. 04:16:23 AM.Pete,Either a 9B or 408, and hang on. Scott scott what would the 408 need for compression and what spring pressure do they need ?thanks pete
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