Cam opinions

[ssfirefighter]

I am getting ready for the 95'' and have the SE 203 cams in hand. But I am thinking about the S&S 570G gear drives. My mechanic is a real fan of them, but they seem pretty big. I am a 2006 Night Train EFI, single rider around town, and the occasional weekend trip. I am just a big fan of big power and always looking for more.

As far as tunning, I am really considering the Dayton Twin Tec with the new dual O2 sensor setup, or maybe just doing the PCIII with custom MAP.

I am new to all of this EFI, and cams for the 88, so any opinions would be appreciated.

[xxxflhrci]

IMO, throw out the 203's and spring for a gear drive. I tell that to anyone who plans on keeping a bike and racking up the mile and especially tell it to someone who doesn't work on bikes themselves. With that said, the 570's are not bolt-in cams. You are gonna have to at least change your valve springs to run them. You will likely have to do some headwork to take full advantage of a set of 570's. Do you plan on doing any headwork? If not, you may want to consider a lower lift set of cams.

[ssfirefighter]

Would the 570's be a good choice for stock heads for now? I am thinking about porting, but it is later down the road. And I am reading that they will work with stock springs too. (I believe I read that from the S&S website.)

[xxxflhrci]

Would the 570's be a good choice for stock heads for now? I am thinking about porting, but it is later down the road. And I am reading that they will work with stock springs too. (I believe I read that from the S&S website.)

There are better cams for stock heads, IMO. In the S&S line, the 510's would be better. In Andrews, the 26's. Go back and check the S&S site, you will see that the only "bolt-in" cam that they have to use with stock springs is the 510's.

[ssfirefighter]

So with the 570's would I just need the pushrods, and springs? And how would it perform untill the head port?

[FATBACK]

503g's is what my mech suggested good all round he said

[xxxflhrci]

503g's is what my mech suggested good all round he said

The may be fine if he were riding an EVO.

[xxxflhrci]

So with the 570's would I just need the pushrods, and springs? And how would it perform untill the head port?

You don't need adjustable pushrods since you are pulling the heads to put in springs. I have no clue how the cams will perform without a port job. However, the general rule of cam selection is read the literature, pick out the cam that you think you need, and then get the next size down.

[FATBACK]

these were for twin cam im thinking of buying i may the number wrong but im sure thats whay we discussed

[xxxflhrci]

these were for twin cam im thinking of buying i may the number wrong but im sure thats whay we discussed

Never heard of a 503 TC cam. S&S makes a 510. HD makes a 203.