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#227MBP4960CT
BluePrint MBP4960CT GM 496 Base Engine, Cast Iron Heads, Flat Tappet Cam
Discontinued
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Key Specs
| Crate Engine Type | Long Block |
| Compression Ratio | 9.0:1 |
| Engine Displacement | 496 cu. in. |
| Camshaft Type | Hydraulic Flat Tappet |
| Cylinder Head Material | Cast Iron |
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BluePrint Engines MBP4960CT Details
True Blue Power! BluePrints pro engine builders are enthusiasts just like you and it shows in the quality and performance of every engine they build. Each BluePrint crate engine is carefully dyno tested and ships with printed, proven results. If you’re looking serious horsepower at an affordable price, BluePrint Engines is the choice for you!
GM 496 Base Engine - Cast Iron Heads - Flat Tappet Cam
Overview
- HP & Torque: 460 HP / 515 FT LBS
- Compression Ratio: 9.0:1
- Cast Iron Heads
- Flat Tappet Cam
- Cast Steel Crank
- Part #: MBP4960CT
Block
- 4 Bolt Main .060 over block
- two piece rear seal
- drivers side dipstick
- Square and parallel decked
- Align honed main bearing bore
- Cylinders honed on computer controlled machine to within .0002 straightness and roundness
- Cylinders are sonic tested for thickness
Rotating Assembly
- New cast steel crankshaft internally balanced
- New 4340 forged connecting rods
- 150,000 psi rod bolts
- Forged flat top Pistons
- Hastings moly rings
- Rotating assembly balanced to within 2 grams
- Melling high volume oil pump
- Heavy duty double roller (high performance) timing set
Cylinder Heads
- GM cast iron oval port cylinder heads with screw-in studs and guide plates
- 1.509 dia. Valve springs w/ damper. Hardened retainers & keepers. 2.25 swirl
- polished intake valves, 1.88 swirl polished exhaust valves
- Elgin hardened push rods
- Long slot rockers with postitive lock adjusting nuts
Cam Specs
- Cam Type: Flat Tappet
- .544 Intake .547 Exhaust
- 226 Intake / 236 Exhaust duration
- @ .050 - 112 degree lobe separation
Ignition Timing
- 34 Degree Total
Also Includes
- Marine intake manifold
- Chrome valve covers
- Cad plated marine oil pan
- Brass freeze plug
- Dyno test results shipped with engine
Warranty
- 12 month unlimited hour on pleasurecraft only. No warranty on commercial use.
Warranty Information
Warranty Information (PDF)
BluePrint Engines MBP4960CT Specifications
BluePrint Engines MBP4960CT Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | MBP4960CT |
| Brand | BluePrint Engines |
| Crate Engine Type | Long Block |
| Compression Ratio | 9.0:1 |
| Engine Displacement | 496 cu. in. |
| Camshaft Type | Hydraulic Flat Tappet |
| Cylinder Head Material | Cast Iron |
| Piston Material | Forged Aluminum |
| Crankshaft Material | Cast Steel |
| Intake Manifold Included | Yes |
| Distributor Included | No |
| Connecting Rod Material | Forged 4340 Steel |
| Valve Covers Included | Yes |
| Cylinder Heads Included | Yes |
| Rear Main Seal Style | 2-piece |
| Timing Cover Included | Yes |
| Oil Pan Included | Yes |
| Water Pump Included | No |
| Harmonic Balancer Included | Yes |
| Flexplate Included | No |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plug Wires Included | No |
| GENERAL | |
| Torque | 515 ft./lbs. |
| Horsepower | 460 horsepower |
| Camshaft Duration (.050 in) | 226° intake / 236° exhaust |
| Camshaft Lift (in) | .544 intake / .577 exhaust |
| Warranty | 30 month / 50,000 miles |
| Assembled | Yes |
| Camshaft Included | Yes |
| Cylinder Heads | GM cast iron oval port |
| Block | 4 Bolt main, .060-over |
| Notes | Zinc Additive Required For Flat Tappet Application, Recommended Oil For Your BluePrint Crate Engine: 10W30, Non-Synthetic. Not For EGR |
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