Originally Posted by derass

As I mentioned in the other thread, S3's or Tomei 260s would be a better match for the 2871. The S4's push the power band even further to the right; they would be getting into their optimal power band as the 2871 is running out of steam. The S4 or Tomei 270 would be a better match for something like a 3076 and 400+whp



Having now run both extensivly, I'd suggest it in this way



S3's for a nice daily driver - great torque, a little better response, yet still power to redline



S4's for a track oriented/higher RPM setup. While they still respond well, they really have that 5000+ shine, which in my case on track is where I'm at most of the time as it is. (5000 to 8000 rpm)







That's with anything on these cars though, obviously not the fault of the cam. And with that said, to find a wore out set is VERY uncommon. The stock spring seat pressure is very low, and with a relatively easy valvetrain (abuse wise) you don't come across them failing or weakning that often...but with these things, not all metal is the same, so you can't rule out anything!



One thing I am a fan of though, is using JWT springs with JWT cams, and or Tomei Springs with Tomei Cams, etc etc. Not to say you can't mix and match, but at least yo uknow with those two examples, that JWT/Tomei tested their springs with their cams, and know how they react.



With it all considered, the JWT still make a nicer powerband, but i'd take JWT or Tomei over HKS any day.









In the *ultimate* setup, where people have a way to to replicate a good lash (aka: solid lifters), then I'd agree cam gears are the ultimate way to go, albiet through testing. In the real world, the JWT/Tomei/HKS work awesome installed as OEM. Could you maybe get 5 more whp? could you maybe get 3-4 more hp average? Sure...but at what cost of dyno time and parts (for a street car)











Solid is overkill for 99% of SR20 owners



Run newer B15 Roller Rocker Lifters, run dual guides, and call it a day. 8500 rpm with aftermarket springs no worries.