JBA PERFORMANCE ENGINE - STAGE I

Stage I- Stock to mild street performance:

Engines are built and machined with the classic resto-rodders in mind. The emphasis is on original design with modern horsepower. We use your original core parts and fill them with the latest performance hardware. A lot of the machining operations we utilize on our all out competition engines are applied to every stage engine to insure proper clearances, valve train geometry, and maximum functionality.

Engine Block:

Factory Seasoned Block cleaned, Magnafluxed
Check for cracks
De-burr casting flash to relive stress risers
Oil galleys and all holes drilled and tapped
Bored up to .060 off crankshaft centerline
Torque plate honed for proper ring sealing
Surface decked minimum for proper gasket sealing

Cylinder Heads:

Stock Factory Heads cleaned, Magnafluxed,
Check for cracks
New bronze guide liners installed & sized
3-angle valve job
New hardened seats installed (if required)
All bolt holes drilled and tapped

Crankshaft:

Factory crank cleaned, Magnafluxed, check for cracks
Checked for straightness (straightened if needed)
Grind and micro polish

Connecting Rods:

Factory Rods big and small ends re-sized for specific bearing clearance
Beam ground to relieve stress risers
Weight matched to within .5 grams

Engine Assembly:

Balanced and blueprinted
Critical tolerances measured and documented
Camshafts degreed and installed
All bearings, gaskets, seals, internal parts measured,
documented and assembled

Comparison Chart >