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  • Crate Engine, BluePrint LS 427 ProSeries Stroker, Long BlockCrate Engine, BluePrint LS 427 ProSeries Stroker, Long Block
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Blueprint Engines

Crate Engine, BluePrint LS 427 ProSeries Stroker, Long Block

Vehicle Specific View fitment for 49 models
Part# CH36957
Mfg# PSLS4271CT
Sold As Each
$12,949.99
List Price: $14,245.95
You Save $1,295.96

Ships direct from manufacturer
Allow 2-6 weeks for item to arrive.
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The Performance Level You Desire!

A great foundation to return your vehicle to its former glory or a tire eating machine

Add new power and life to your ride with this brand new crate engine from BluePrint Engines. Featuring an all new engine block that BluePrint designed, manufactured and machined right here in America. Engine is ready to drop in and has been fully Dyno tested, passed vigorous inspections, and is ready to power up your project. With BluePrint offering one of the best warranties in the business, you will have peace of mind when you drop this motor in between your frame rails.

TECHNICAL SPECIFICATIONS HP & Torque: 625 HP / 565 FT LBS Compression Ratio: 11:1 Aluminum Heads Hydraulic Roller Cam Forged Crank Forged Pistons BLOCK: OEM Block Machined in the USA! 6-Bolt Main 4.060" Bored to 4.069 1-Piece Rear Main Seal ROTATING ASSEMBLY: New Forged Crankshaft 4.125" stroke Forged 6.125" connecting rods Forged Pistons Internal CYLINDER HEADS: BluePrint Aluminum Cylinder Heads 72cc chamber 2.165" intake/1.600" exhaust valves 259cc intake/102cc exhaust runners CAM SPECS: Cam Type: Roller .624 intake .624 exhaust lift 239 intake 255 exhaust duration @ .050, 114-degree lobe sep. IGNITION TIMING: ECM Controlled (not included - customer must reprogram) ALSO INCLUDES: Timing cover LS3 Intake manifold NOTES: This engine requires a non-weighted harmonic balancer, and non-weighted flex plate/flywheel. This engine is specifically designed to replace your existing LS engine - a direct replacement for Gen 4 applications. Built with a 58x Gen 4 style reluctor and sensors. Not for use in pollution-controlled vehicles. Recommended Fuel: 91 Octane BluePrint Engines recommends a 2200+ RPM stall converter Because this engine does not ship with an oil pan, we do not dyno test prior to the engine being shipped.

Notes

  • This item is not eligible for any further discounts or promotional pricing.
  • SHIP NOTE: This item exceeds standard size and is exempt from free shipping.
  • SHIP NOTE: This item cannot be shipped FedEx Ground and requires Truck Freight Delivery which must be prepaid by credit or check (no C.O.D). Please call or email us for an exact quote.
  • SHIP NOTE: This item is SPECIAL ORDER and will drop-ship from the manufacturer. While the majority of drop ship orders experience no delays, please be advised that OPGI does not control delivery times.
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This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only. Learn More
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1982 Buick Grand National  
1984–1987 Buick Grand National  
1976–1987 Buick Regal  
1963–1976 Buick Riviera  
1961–1972 Buick Skylark  
1983–1987 Buick T-Type  
1938–1993 Cadillac 60 Special  
2013–2019 Cadillac ATS  
1965–1976 Cadillac Calais  
2003–2019 Cadillac CTS  
1959–2005 Cadillac DeVille  
1953–2002 Cadillac Eldorado  
1999–2000 Cadillac Escalade  
2002–2023 Cadillac Escalade  
2002–2013 Cadillac Escalade EXT  
1954–1996 Cadillac Fleetwood  
1936–1951 Cadillac Series 60  
1936–1951 Cadillac Series 61  
1937–1976 Cadillac Series 62  
1936–1951 Cadillac Series 63  
1937–1976 Cadillac Series 65  
1936–1987 Cadillac Series 67  
1936–1987 Cadillac Series 70  
1936–1987 Cadillac Series 72  
1936–1987 Cadillac Series 75  
1976–2004 Cadillac Seville  
2005–2011 Cadillac STS  
2004–2009 Cadillac XLR  
1967–1987 Chevrolet C10  
1967–1987 Chevrolet C20  
1967–1987 Chevrolet C30  
1964–1977 Chevrolet Chevelle  
1959–1960 Chevrolet El Camino  
1964–1987 Chevrolet El Camino  
1967–1987 Chevrolet K10  
1967–1987 Chevrolet K20  
1977–1987 Chevrolet K30  
1978–1983 Chevrolet Malibu  
1970–1988 Chevrolet Monte Carlo  
1995–2007 Chevrolet Monte Carlo  
1967–1987 GMC C15  
1967–1987 GMC C25  
1967–1987 GMC C35  
1967–1987 GMC K15  
1967–1987 GMC K25  
1977–1987 GMC K35  
1961–1988 Oldsmobile Cutlass  
1958–1986 Pontiac Bonneville  
1959–1977 Pontiac Catalina  
1962–1987 Pontiac Grand Prix  
1964–1973 Pontiac GTO  
1961–1981 Pontiac LeMans  
1961–1970 Pontiac Tempest  
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Crate Engine, BluePrint LS 427 ProSeries Stroker, Long Block
Blueprint Engines Crate Engine, BluePrint LS 427 ProSeries Stroker, Long Block