Erson Cams was a brand sold by the Mr. Gasket company, and this brand specialized in cams and camshafts for different vehicles, including Pontiac and Chevrolet. As of 2010, Mr. Gasket is no longer selling camshafts under this brand, but you can still purchase these cams from third party vendors, including online vendors. A cam is a rotating component that changes linear motion into rotary motion and vice versa, and it is attached to the camshaft. The model of camshaft that you need depends on your vehicle.
This camshaft is for Pontiac, and it features a HFT lifter. This camshaft has a revolutions per minute (RPM) range of between 1,200 and 4,500 RPMs. It has an advanced intake duration and advanced exhaust duration of 292 degrees each. The internal lift of the 1.5 rockers is 0.449 inches, and the external lift of these rockers is 0.449 inches. The external lift of the 1.65 rockers is 0.494 inches, and the internal lift is 0.494. The internal and external duration at 0.05 inches is 214 degrees, and the lobe separation angle is 110 degrees.
The E17001 camshaft is for six cylinder, 292 CID Chevrolet truck engines, and it has a RPM range of 1,000 to 4,000 RPM. The internal duration is 274 degrees, and the external duration is 280 degrees. It features a gross lift of 0.478 inches internally and 0.490 inches externally. The duration at 0.05 inches is 202 degrees internally and 208 degrees externally. The lope separation angle is 110 degrees.
This is another type of Pontiac camshaft, and it features a SR lifter. It has an internal duration at 0.05 inches of 284 degrees, and an external duration at 0.05 inches of 288 degrees. The advanced intake duration is 314 degrees, and the advanced exhaust duration is 318 degrees. The internal lift of 1.65 rockers is 0.783 inches, and the external lift of the 1.65 rockers is 0.8. The external lift of the 1.5 rockers is 0.712 inches, and the internal lift of these rockers is 0.727. The lobe separation angle is 108 degrees.
This Chevrolet camshaft is for 200 through 229 CID engines made between 1978 and 1984. It offers you between 1,500 and 4,500 RPMs, and it has a lobe separation angle of 110 degrees. The internal duration is 274 degrees, and the external duration is 280 degrees. The duration at 0.05 inches is 208 degrees internally and 214 degrees externally. It has a gross lift of 0.420 inches internally and 0.429 inches externally.