This is a BluePrint Engines 632 cubic inch GM big block Pro Series crate engine, base dressed and carbureted, rated at 815 horsepower and 775 lb-ft of torque. It is a fully forged, high-compression big-inch build with a tall-deck cast iron block, forged crankshaft and H-beam rods, forged pistons, and large-runner BluePrint aluminum heads, delivered with carburetor, intake, and distributor fitted. Every BluePrint crate engine is dyno tested and ships with a dyno printout.
Specifications:
- Displacement: 632 c.i. (10.3L)
- Horsepower: 815 HP
- Torque: 775 lb-ft
- Bore: 4.600 in
- Stroke: 4.750 in
- Compression ratio: 11:1
- Block: High-strength cast iron, tall deck (approx .400 in taller than OEM), 4-bolt main, 1-piece rear main seal
- Crankshaft: Forged steel
- Connecting rods: Forged H-beam 6.635 in
- Pistons: Forged, dome, 1cc
- Cylinder heads: BluePrint aluminum PS8012, 119cc chamber, 2.30 in intake / 1.88 in exhaust valves, 358cc intake runners, .300 in raised exhaust port
- Camshaft: Hydraulic roller, .698 in intake / .698 in exhaust lift, 272/282 duration at .050, 110 deg LSA
- Induction: Holley Gen III Ultra Dominator carburetor on single-plane intake
- Balance: Internally balanced
- Fuel: 91+ octane
- Part number: PS6320CTC
What's Included: Base dressed and carbureted. Includes the Holley Gen III Ultra Dominator carburetor, single-plane intake manifold, Pro Series Ready to Run distributor, harmonic balancer BPP454I, spark plugs and wires, fuel pump block-off plate, valve covers, dipstick, timing cover, oil pump, and oil pan.
Engine Platform: Built to the GM big block (BBC) platform, Pro Series. The .300 in raised exhaust ports and roughly .400 in greater deck height over OEM mean exhaust, shift linkage, and steering clearance must be verified before ordering.
Compliance: Not for use on pollution-controlled vehicles.
Prop 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information visit www.P65Warnings.ca.gov.
FAQ
How much power does the 632 Pro Series make?
It is rated at 815 horsepower and 775 lb-ft of torque, and ships with a dyno printout of its tested results.
Is the 632 street legal?
No. BluePrint states this Pro Series engine is not for use on pollution-controlled vehicles. Confirm the rules for your application before purchase.
What carburetor and induction come on it?
Base dressed and carbureted, it comes with a Holley Gen III Ultra Dominator carburetor on a single-plane intake, plus a Pro Series Ready to Run distributor.
What clearance should I check before ordering?
The heads use .300 in raised exhaust ports and the tall-deck block is roughly .400 in larger than OEM, so verify exhaust, shift linkage, and steering clearance for your chassis.
What fuel does it need?
91 octane or higher, given the 11:1 compression.

