Okay I've been debating quite a bit on which of the two cams I would like to purchase yet I keep hearing different stories..

Current turbo I have is a greddy 50trim, is it better to get the Kelford 272s or the GSC S1 268s? I think the 274/272 S2s are designed for the GT35r turbo so not sure if those cams are too aggressive..

I do have more bolt on's yet I think the cams are based more so on the turbo itself, right?

Any thoughts or ideas?

 

you probably would be fine either way but i would go with s2's. you should get valvesprings with them but there isnt much (if any) disadvantage of having larger cams with a smaller turbo plus it will give you room to grow. I have m3's with a stock turbo and it still spools awesome and makes good power.

 

Thanks for the advise, what valvesprings are good with either cams?

 

i have the supertech duals and have no complaints. theres plenty of others though like GSC, Kiggly, Ferrea, etc. I dont know that any one is a whole lot better than others. I would prob just get the GSC ones to match the cams

 

Awesome, thanks for the help!

 

People seem to make more power with the gsc...

In the same situation as you

 

GSC S1's or S2's?

 

I have gsc s2's with kiggly beehive springs. I have a 2.3 stroker and hta fp green. Ive not complained yet with the cams as with this turbo setup its near perfect.

 

I really like my GSC S2's. They lope pretty nicely but power wise I can't really say. I always do "batches" of parts at a time. I've heard that Kelford and GSC are very similar so either way I wouldn't be too worried. I think GSC's are cheaper though so that might be a factor for you. I would go with at least the S2 or Kelford equivalent. The dynos I have seen show minimal to no loss in low end and better gains midrange and up top from what I can remember. S1's just seemed like a waste of money to me. But I also did alot of other stuff at the same time. GTX3071R, ported IM/TB, injectors, etc. Whatever you pick I hope your satisfied with your choice.