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Vehicle Info NeededSmall Block Chevy 396ci Stroker Dress Engine 491 HP/509 TQ
Ships on 09/15/2026
Lowest Price Guarantee- Small Block Chevy 396ci Stroker Dress Engine
- 491 HP/509 TQ
- 1-Piece Rear Main Seal
Engine Break-In Procedure
Use or break-in oil or conventional (non-synthetic) multi-viscosity oil with zinc additive for the first 500 miles of operation. Avoid hard acceleration for sustained periods. Periodically change the engine speed while driving to help seat the rings. While the engine is running, be sure to check oil pressure and coolant temperature, and check for fluid leaks, such as oil, transmission fluid, fuel, and coolant/antifreeze. Also listen for any unusual sounds. Should you hear an unusual sound, shut the engine off, check for the source, and correct it.
Engines with flat tappet cams only - Start the engine and bring it to 2,000 RPM. Get the engine running smoothly. Then vary the engine speed from 1,800-2,200 RPM in a slow acceleration/deceleration cycle for 30 minutes. This is necessary to provide adequate oil splash and lifter rotation to properly mate each lifter to its lobe.
At 500 Miles change the engine oil and filter using conventional (non-synthetic) oil. After 6,000 miles, synthetic oils can be used in your engine. For flat tappet cam engines, continued use of oil with zinc or a zinc additive for the life of your engine is recommended.
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Blueprint Small Block Chevy Engines are a great choice for drivable and reliable high-performance engines. All rotating assemblies are balanced within 2 grams on a computerized balancer. Blueprint Engines are dyno tested and include dyno sheets.
Best of all they feature a 30 month/50,000 mile warranty.
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Recommended Stall Converter: 2000+ rpm
Recommended Fuel: 91 Octane
Block:
- 4-bolt main block
- 1-piece rear main seal
- Align honed main bearing bore
- Cylinders are sonic tested for thickness
- Cylinders honed on a computer controlled machine to within .0002'' straightness and roundness
Rotating Assembly: - Forged Steel 3.875" stroke crankshaft
- Heavy Beam 6" Rods
- Forged pistons, 10.4 to 1 compression
- Hastings Moly rings
- Clevite bearings
- Externally balanced rotating assembly
- Melling high volume oil pump
- Heavy duty double roller timing set
Cylinder Heads: - Blueprint Performance Aluminum Heads w/ 64cc chamber
- Hardened retainers and 1.25'' diameter valve springs
- 2.08'' swirl polished intake valves
- 1.60'' swirl polished exhaust valves
- Hardened pushrods
Camshaft Specs: - Hydraulic Roller Cam
- Duration @ .050'' Lift: 230 Intake / 236 Exhaust
- Lift: .544'' Intake / .555'' Exhaust
Other Features: - Chrome valve covers
- Chrome timing cover
- New 5-quart oil pan
- Brass freeze plugs
- 10.4:1 compression
Dress Model Adds: - Dual Plane, Satin Aluminum Intake Manifold
- Holley 750 cfm Manual Choke Vacuum Secondary Zinc Carburetor - 510-0-3310S or Holley Sniper EFI System
- HEI Distributor & Coil
Note: This engine will not work for applications requiring EGR. Does not include flywheel/flexplate.
Your BluePrint engine was dyno tested with the parts and specifications listed below. If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet. - Part Number: BP3961CT
- Fuel Delivery Type: Carbureted, 750cfm
- Spark Plug: AC Delco 41-629
- Spark Plug Gap: .045"
- Harmonic Balancer: Non-Weighted - 8" diameter
- Flexplate/Flywheel: Late 350 Weighted
- Intake Manifold: Dual plane
- Fuel Recommendation: 91 Octane
- Timing (Initial/Total Advance): Total timing 32°
- Firing Order: 1-8-4-3-6-5-7-2
JEGS Easy Kits are designed by JEGS high-performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.
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