I have heard recently from several people about the ef-1 valvetrain and cams, etc, and Im wondering how many people have experience with them. I did a quick search but came up empty. From what Ive heard so far, their cams have been seen to dyno more than JUN3s (on the same car?? that Im not sure of), they have a guarantee or warranty against breakage (valvetrain, what about cams?), and they are priced considerably less than much of the competition. Just thought I would get some opinions from you guys on the company since I am thinking about replacing my current valvetrain setup.

 

Yeah, I was kinda doubtful of their stuff too.....

But I have a local buddy who's been running the ef-1 valvetrain for a LONG time... AND revving over 10k repeatedly in his b16 with skunk stage 1 cams..... AND he's had NO problems!

I think I'm gonna try the ef-1 valvetrain and Ti retainers too... he has guarantees about them being better than just about any valvespring set out there. AND guarantee's against galling of the retainers.

 

i would wonder how they can gaurantee this kind of stuff at this sort of rpm.