The stage 5 is the largest camshaft we offer. It's massive .660" valve lift and high duration lobes are best suited for larger engines above 2500CC where maximum power and RPM is desired. In our opinion and customer feedback it is too large for 2300cc circle track engines with it's 5500-9500 rpm range however some have made it work. If you want the biggest cam that will fit in a 2.3L Ford, this is it! We recommend our matched Beehive X series solid roller valve springs for this cam that are 190# closed seat pressure.
Stage 5 Circletrack Race Mechanical Roller Cam .660/.660" 5500-9500rpm
Solid roller camshafts require the installation of solid lifters. This camshaft requires are Beehive solid roller valve springs or other springs with 185# closed seat pressure minimum with clearance for .640" valve lift. Machine work is required to the spring pockets and Boport or other .400 or .450" tip valves are required.