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Optional Digital Displays - 7" Digital Dash (PN 553-106) / 3
The hydraulic roller drive train is stabilized with COMP BSR shaft rockers for outstanding performance that is maintenance-free
Callies Says - Better by Design
INTEGRATED WATER/METHANOL INJECTION CONTROL
VR2 twin pump design allows both pumps to operate simultaneously or for one pump to be off or run at low speed while the second pump is at low speed or full speed
All Pro Cylinder Solid LS7 Heads - Mechanical Cam, Titanium Valves Diamond Optional Digital Displays - 7"This is the head we use for all of our big boost, billet block LS engines with no water. The 12 4 All Pro solid casting features reinforced exhaust flange, Borowski custom CNC port and chamber design, custom Ferrea titanium intake & exhaust valves. The spring kit features Manley NexTek valve springs (800 lbs. in. rate; 1. 130 in. coil bind height), Manley machined 10 degree bead locks and Manley titanium retainers. The heads are amazingly strong and