ATK Engines SP53 Chevy 383 Stroker Short Block

ATK High Performance Chevy 383 Stroker Short Blocks Your engine needs a rock-solid foundation to make the horsepower you crave; that's where these ATK High Performance Chevy 383 Stroker short blocks come in. With these blocks, all of the hard work has been done for you. Everything comes machined, clearanced, balanced, and blueprinted, so you have a bulletproof bottom-end that is ready to run. Just decide how mild or wild you want to go.These ATK High Performance Chevy 383 Stroker short blocks include the following:* Handpicked and seasoned 4-bolt main block* Aligned and honed main bores* Nodular iron crankshaft* 3.75 in. stroke* I-beam connecting rods* Hypereutectic dish top pistons

Highlights

• Block: Dart Big M Sportsman 4 bolt main 2pc rear main seal
• Bore/Stroke: 4.600” x 4.750”
• Displacement: 6.3 L
• Crankshaft: Scat 4340 forged internally balanced
• Rods: Scat 4340 forged H beam with ARP 8740 bolts

Specifications

• Engine Displacement: 383 cu. in.
• Piston Material: Forged Aluminum
• Crankshaft Material: Forged Steel
• Intake Manifold Included: No
• Assembled: Yes
• Oil Pan Included: No
• Water Pump Included: No
• Harmonic Balancer Included: No
• Flexplate Included: No
• Flywheel Included: No
• Material Type: Cast Iron
• MFG. Part #: SP53
• Notes: GM 1986-2000 small block with 4.040 in. bore and 3.750 in. stroke, +5cc flat top pistons, Scat forged 5.700 in. connecting rods, ARP 8740 rod bolts, and moly rings.
• Sold in Quantity: Each
• Connecting Rod Beam Style: H-Beam
• Piston Style: Flat Top
• Brand: ATK Engines

Emissions Notice

Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine