BluePrint PS6320CTF Pro 632 815 HP EFI Base Long Block
Modernize your classic chassis instantly using this base BluePrint GM 632 815HP EFI Pro Series long block. Features a massive 10.3L cast iron block paired with 11.0:1 compression aluminum heads. Mount your custom intake. Burn rubber.
- Massive displacement yields unbelievable strip performance
- Internal engine balancing dampens massive crankshaft vibrations
- Eleven to one squeeze ratio requires premium pump gas
- Hydraulic roller valvetrain runs absolutely maintenance free
Description
High tensile gray iron anchors the BluePrint PS6320CTF Long Block Engine, delivering 815HP at 6,200 RPM for serious commercial long block repower builds. This 632 cid 10.4L big block Chevy produces 800 ft-lbs torque for severe duty installations. Technicians must check bellhousing depth to ensure full torque converter pilot hub engagement.
ASTM A48 Class 35 cast iron makes up the 10.200in tall deck block featuring splayed billet main caps. A 4340 forged steel crankshaft and forged H-beam rods complete this BluePrint Engines engine core. The 12V starter draws 205A during cranking cycles. Dry weight totals 640 lbs with an unrigged stance of 31in length by 28in width by 30in height. Pan capacity holds 8.0 quarts.
Key Features of BluePrint PS6320CTF
Master machinists buy BluePrint PS6320CTF Long Block Engine packages to eliminate machining backlogs during an industrial engine rebuild project. The cylinder heads feature high flow intake runners designed for maximum volumetric efficiency.
- Aluminum cylinder heads house massive 2.30in intake and 1.88in exhaust valves to feed huge cylinders.
- Severe duty hydraulic roller lifters eliminate mechanical lash adjustments across thousands of hours.
- Forged 2618 aluminum pistons handle heavy thermal loads without crown failure.
- The PS6320CTF commercial core maintains 0.0019in connecting rod bearing clearance for optimal oil flow.
- Splayed 4-bolt billet main caps eliminate crank bore movement under extreme bottom end stress.
- Double roller timing chains maintain strict valve event timing under high acceleration rates.
- Multi layer steel head gaskets clamp down tightly to eliminate combustion bore leakage.
Dynamometer Load Bench Test Limits
Bench dyno readouts verify 815HP at 6,200 RPM and 800 ft-lbs torque at 4,800 RPM for this PS6320CTF long block engine. Oil gallery sensors track 64 PSI at 2,800 RPM while maintaining 195°F sump lubricant temperatures. Cylinder compression gauges show 200 PSI per cylinder across all eight bores within 3% balance. Crankshaft runout checks verify 0.0003in TIR. Exhaust gas temperature gauges report 1,330°F under peak brake load.
Shop Installation Maintenance Protocol Requirements
Throttle linkage hardware mandates 5 lbs spring tension for positive return action. Mechanics should not install this heavy duty replacement engine into chassis lacking structural front subframe reinforcement or vehicles with light passenger car rear axles.
- Drain break in oil after 500 miles or 20 operating hours then fill with 15W-50 oil.
- Inspect valvetrain geometry and pushrod tip wear patterns during the first scheduled oil change.
- Retorque cylinder head bolts to 85 ft-lbs following the initial full thermal cycle.
Crate Manifest Warranty Protection Coverage
Supported by the BluePrint Engines build standard, this product includes a 3-Year or 50,000-mile warranty. The wooden crate holds the long block engine core, oil pan, harmonic balancer, aluminum valve covers, timing cover, oil pump pickup, plus official dynamometer verification sheets.
BluePrint PS6320CTFKB Pro 632 CID 815 HP EFI Fully Dressed Specs
| Brand | BluePrint Engines |
| Engine Model | PS6320CTFKB |
| Part Type | Crate Engines |
| Product Line | BluePrint Engines Pro Series Chevy 632 C.I.D. 815 HP EFI Fully Dressed Long Block Crate Engines |
| UPC | 00887753800183 |
| Crate Engine Family | Chevy Big Block |
| Actual Engine Displacement | 10.3L / 632 CI |
| Cylinder Head Material | Aluminum |
| Engine Block Material | Cast iron |
| Compression Ratio | 11.0:1 |
| Assembled | Yes |
| Engine Balance | Internal |
| Cam Style | Hydraulic roller, OE roller |
| Rear Main Seal Style | 1-piece |
| Intake Manifold Included | Yes |
| Intake Manifold Style | Fuel Injection |
| Cylinder Heads Included | Yes |
| Carburetor Included | No |
| Throttle Body Included | Yes |
| Distributor Included | Yes |
| Oil Pan Included | Yes |
| Valve Covers Included | Yes |
| Timing Cover Included | Yes |
| Water Pump Included | Yes |
| Harmonic Balancer Included | Yes |
| Flexplate Included | No |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | Yes |
| Spark Plug Wires Included | Yes |
| Computer Included | No |
| Wiring Harness Included | No |
| Supercharger Included | No |
| Warranty Info | 30-Month / 50,000 Miles |












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