Join Date: Jun 2001
Location: austin, TX, 78704
When I still had the Systemax II intake feeding my 185's, I called a few companies once I'd procured my S-Trim to ask about blower cam suggestions... The duration #'s they recommended were 224/232, same as the 274. Also the lift #'s they suggested were inline, the only difference was that they preferred a 114° ls to the 112 on the XE274HR. I wound up with a lunati custom right in line w/ these specs and had GREAT results, but that was a few motors back. I currently have a friend running the nitrous version of this cam (on a 114° ls) who posts up UNREAL #'s-> 10.04 @ 137 w/ a 331, 6037's, Systemax, and a MAXXED dry kit. This is in Seguin at RiverCity Raceway outside of San Antonio.
Diesel Boy: Yep, there are similarities btw the two cams, but I'd bet that you're paying for a better camshaft w/ the comp. Lift, duration and lobe seperation are significant, but so are the ramp designs, which is what you are paying for... i guess... Also, the TFS cam is well advertised, but try to find someone w/ it in stock. I kick myself that I sold this cam for $80 bucks 4 months before I realized that the XE274hr had the specs that I was looking for... DOH!