SE 204 cams

[Colorabee]

I have the 203's in my 95" ultra and I love them.  FYI, I put some Wood tw-6 cams in a 95" 203 Fatboy, and it pulled like a freight train.

[dave brode]

Hi Hoss- How much of a difference is the se 204 to the se 203?

nutshell: not much, imo.

Talking to a smart fellow, the subject of 203 vs 204s came up. He had the opinion that the 203s were for carb'd and the 204 were for efi. Makes sense with the 203s 101.25* LSA and the 204s 104* LSA.

It states in the descript of the 204s that max horse would occur at 5800. Imo, hardly a top end grind, and I think anyone looking for that will be disappointed. I have experience with 203s and 204s in mild 95" carb'd bikes with flat tops and stock heads. Both heavy touring, similar exhaust, stock heads. The curves and peaks were very similar, although the 204s held on a little longer on the dyno.

The 204 bike was mine, and imo, the 9.3-1 CR 95" was an excellent two up touring cam for my style, but I never lug an engine.  Later, the same 204s were used in a 10-1 CR 95' with some port work. Huge torque, but still peaked well below 6000. Fwiw, this tells me that 236* is not enough duration even for a 95" if you want to be anywhere near square.

Fwiw, the 204s are ground on 96/112 centers, [+8*]. I've always wondered what they would do backed off to 100/108. Close would still be early at 38* after. I wanted to try it, but I moved up to a 10.3-1 ported 1.94" head with 251 cams [huge wide curve and 6200 max with fatcat - excellent do not lug it heavy bike combo imo]

Dave