ATK Engines SP35 High Performance Short Block Small Block Chevy 383ci
059-SP35
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Small Block Chevy
ATK Core Return Process
JEGS and ATK appreciate your business and want to ensure that your core return is as smooth as possible.
Please CLICK HERE for ATK Core Return Process
NOTE:
- Core return can be any Small Block Chevy 350ci engine, except 1992-1997 LT1 style engines
Bulletproof bottom end built to handle more power with its top of the line parts.
Block Information:
- Seasoned OE 4 bolt main 1-piece rear main seal 1996-2000 roller block, passenger side dipstick
- Bore/Stroke: 4.040 in. x 3.750in.
- Displacement: 383 ci
- Camshaft Bearings: Dura-Bond, installed and clocked to OEM position
- Freeze Plugs: Brass, installed and sealed
- Oil Galley Plugs: Installed and sealed
Rotating Assembly:
- Crankshaft: 4340 forged
- Balance: External rear (flexplate/flywheel), internal front (harmonic balancer)
- Rods: Scat 5.700 in. 4340 forged H-beam with 8740 ARP bolts
- Compression Ratio: 58 cc= 10.4:1 64 cc= 9.8:1 / 70 cc= 9.2:1
- Pistons: 2618 forged -16 cc dished with 2 valve reliefs
- Rings: Plasmamoly
- Flexplate: External balance 168-tooth
Recommended Components:
- Balancer: Internal balance
- Flexplate/Flywheel: External balance (1987-Up 1 piece rear main)
- Head Gasket: .038 in. thick or per application
- Oil: 10W30 Non-synthetic for first 3000 miles
- Oil Filter: Wix or K&N per application
Specifications:
What brand is the crank and what are the rings? Thanks!
Can you use power adder
Is this short block compatible with VORTEC heads and intake for my 1998 L31 Silverado? Is it designed to accept factory hydraulic roller lifters and cam?
With your recommended gasket and an Edelbrock #60739 Performer RPM cylinder heads what would be my compression?
Is this your best option for a 383 replacement for my 1996 LT4. It does not appear you will accept it as a core replacement, it that correct? Thx!
What is the recameded balancer and flywheel. Do you have a link for them
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Electrical Cords
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