ATK Engines SP53 Chevy 383 Stroker Short Block
$2,508.02
ATK SP53 Chevy 383 stroker short block | 4.040 x 3.750 in. bore/stroke | Scat 4340 forged crankshaft; internal balance at the front (harmonic balancer) and external balance at the rear (flexplate/flywheel) | 5.700-in. Scat forged rods | +5cc flat-top pistons
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Description
Mileage status: Donor-vehicle odometer mileage is not provided for this crate-engine assembly. Any break-in or oil-change distance below is post-installation guidance, not prior mileage.
The ATK SP53 is a Chevy 383 stroker short block for 1986–2000 GM small-block applications. The part-specific notes list a 4.040-in. bore, 3.750-in. stroke, +5cc flat-top pistons, Scat forged 5.700-in. connecting rods, ARP 8740 rod bolts, and moly rings.
Highlights
- 383 cu. in. small-block Chevy short block
- Dart Big M Sportsman block, 4-bolt main, 2-piece rear main seal
- 4.040 x 3.750 in. bore and stroke
- Scat 4340 forged crankshaft; internal balance at the front (harmonic balancer) and external balance at the rear (flexplate/flywheel)
- +5cc flat-top pistons and Scat forged 5.700-in. connecting rods
- ATK part SP53
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 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
Shipping & delivery
Standard orders are normally handled and processed in 1 business day, Monday through Saturday, after payment is confirmed and product availability has been verified. Estimated carrier transit is 1-2 days after dispatch, with transit days Monday through Saturday. Combined with the 1 handling period above, the estimated total delivery time is 1-3 business days for standard destinations. These are estimates, not guarantees. Oversized or freight shipments, deliveries to Alaska, Hawaii, or U.S. territories, and deliveries requiring carrier appointments may take longer or require a separate quote. See our Shipping Policy.
