Stage 3 Engine San Diego builds are engineered for drivers who need race-ready performance in a street-friendly package. JBA Stage 3 engines are built for your specific application… JBA Stage 3 engines are built for your specific application. Our engine packages utilize our machine shop’s capability to modify and test parts using a “whole engine” approach. Our racing experience enables us to select proven combinations, eliminating the guesswork.
Stage 3 engines use only the highest-quality, race-proven parts on the market. JBA’s Stage 3 packages are built and tuned to give you unequalled performance for your hot street or weekend warrior. Our builds follow professional engine-building best practices and reference established SAE engine standards to ensure precision and reliability.
WHAT'S INCLUDED IN A STAGE 3 ENGINE BUILD
Engine Block
- Superior alloy factory block or aftermarket 4-bolt main block used
- Align-honed for straightness and exact main bearing clearance
- Bored 90 degrees off crankshaft centerline
- Torque plate honed for proper ring sealing
- Square decked to exact deck height 90 degrees off crank centerline
- Mocked up and clearanced for long stroke or rod
- Combinations
- ARP hardened bolts or stud kits
- Custom detailed: de-burring of casting flash
- Tap oil galleys and bolt holes
- Painted to the customer’s requested color
Cylinder Heads
Every Stage 3 Engine San Diego build includes fully machined heads designed to improve airflow and support higher RPM power.
- Aftermarket: AFR, Edelbrock, Dart, Trick Flow, or other popular brands
- Performance 3-angle valve job
- Valve guide sized to exact specs.
- Mild porting
- Intake-to-cylinder head match
- Mild runner port work
- Combustion chamber detailed
- Valve is faced, back cut, and hand lapped
Crankshaft
Our Stage 3 Engine San Diego package uses race-proven rotating assemblies for maximum strength under load.
- Aftermarket: Callies, Scat, Crower, or other popular brands
- Forged steel
- Internally balanced
- Micro-Polished
Connecting Rods
- Aftermarket: Manley, Scat, Carillo, Crower, or other popular brands
- Forged steel
- ARP or other hardened rod bolts
- Big & small ends checked for specific bearing clearance and pin fit
- Weight matched to within 0.5 grams
Engine Assembly
Each Stage 3 Engine San Diego is measured, documented, balanced, and assembled by technicians with decades of race-engine experience.
- Balanced & Blueprinted
- Critical tolerances measured & documented, including: Rod & main bearing clearance, paired rod side Clearance, valve-to-guide clearance, installed height and spring pressures, cylinder head flow numbers, Piston-to-bore clearance, installed ring gaps, Deck height, piston-to-valve clearance, balance, and Bob weight Camshafts degreed & installed
- Trial assembled to check clearances on long stroke or rod combinations
- Assembled and quality control checked
- Engines broken in under load using JBA’s DTS Powermark Dynamometer
- Engine tested and tuned for maximum performance using JBA’s DTS Powermark Dynamometer