Erson Cams Catalog Page 204 - E270321 Hi-Flow AH & TQ20H Camshaft Specs

This is page 204 of an Erson Cams / PBM Performance Products camshaft catalog, showing part of a camshaft specification table. The fully legible row describes camshaft part number E270321 "Hi-Flow AH": recommended RPM range 2000-5000, advertised duration 284° intake and exhaust, duration at.050" of 220° intake and exhaust, valve lift of.504" intake and.504" exhaust, 110° lobe separation angle, and 4° (advance). The application note states it "works great in slightly modified engines with up to 9.5:1 compression" and that its high-lift, short-duration design builds good torque and mid-range performance. A partially cut-off row above shows "The Performer" grind (TQ20H, part number partially visible as E270…), RPM range 1500-4500, exhaust 292°/214°.478" lift, described as having superior low- and mid-range power, good idle, fuel efficiency and driveability, with a 4-barrel carburetor and headers recommended. The footer shows the Erson Cams and PBM Performance Products logos and tech line phone numbers: Erson 800-641-7920 and PBM 800-588-9608. The specific engine family this page covers is not visible in this crop.