New 4-7 Swap FXR Series Flat Tappet Cams fit 1955-1998 262-400 cid small block chevys with stock .842 in lifters.

Good 2 bbl cam FAST 1/4-3/8 mile. 11.5+, OK with small 4 bbl 327-358. Camshaft profiles are designed to have more area under the curve and have a fast opening rate while remaining valve train friendly. Higher rocker ratio may be used 1.6 ratio = .600 in gross lift

• RPM Range 3400-7000
• Advertised Duration 292 / 296 deg int/exh
• Duration @ .050 lift 254 / 258 deg int/exh
• Gross Lift .562 in int/exh
• Lobe Center 106 deg
• Advance 4 deg
• Valve Lash .018 / .018.
• 4-7 Swap has broader torque curve.
• Use #E915046 for single spring, 1.255 OD, 1.750 install ht
• Use #3400 for dual spring, 1.440 OD, 1.800 install ht
• Use #E915043 for dual spring, 1.580 OD, 1.950 install ht

For Lifters and Camshaft Kits see below.