One engine name, many configurations
The “Chevy 350” spans production engines, crate engines, swaps, and aftermarket builds. These guides identify named Chevrolet Performance examples and explain when the component manufacturer's instructions must take priority.
Chevy 350 Firing Order and Cylinder Numbering
The Chevrolet small-block 350 firing order is 1-8-4-3-6-5-7-2.
Open complete guide →02Fluid CapacitiesChevy 350 Oil Capacity by Pan and Engine Version
Chevrolet Performance documents a 4-quart oil pan for the 350 HO and 350/290 crate engines, while the Ram Jet 350 has a 5-quart capacity excluding the oil filter.
Open complete guide →03Timing & IgnitionChevy 350 Timing Specs: Initial, Mechanical, and Total
Chevy 350 timing is calibration-specific.
Open complete guide →04Valve SpecificationsChevy 350 Valve Lash Adjustment: Hydraulic and Solid Lifters
Valve adjustment depends on lifter type.
Open complete guide →05Torque SpecsChevy 350 Main Cap Torque Specs: Two-Bolt and Four-Bolt Blocks
For the cited Chevrolet Performance 350 HO and 350/290 four-bolt-intermediate-main blocks, the crankshaft bearing-cap fasteners are specified at 70 lb-ft (95 N·m) for the inner bolts and 65 lb-ft (88 N·m) for the outer bolts.
Open complete guide →06Torque SpecsChevy 350 Rod Bolt Torque and Stretch Specs
For the 3/8-inch powdered-metal connecting rods in the cited Chevrolet Performance 350 HO and SP350/357, Chevrolet prefers 0.
Open complete guide →07Torque SpecsChevy 350 Lug Nut Torque: Match the Vehicle, Not the Engine
There is no single Chevy 350 lug nut torque specification.
Open complete guide →08Ignition SpecsChevy 350 Spark Plug Gap by Engine and Ignition
A Chevy 350 does not have one universal plug gap.
Open complete guide →09Torque SpecsChevy 350 Intake Manifold Torque Specs and Sequence
Chevrolet Performance lists an 11 lb-ft (15 N·m) final intake-manifold bolt torque for its 350/290 and SP350/357 crate-engine combinations.
Open complete guide →10Torque SpecsChevy 350 Head Bolt Torque Specs and 17-Bolt Sequence
Chevrolet Performance specifies 65 lb-ft (88 N·m) for the cylinder-head bolts on its 350 HO, 350/290, and SP350/357 crate engines using the documented production-style fasteners and procedure.
Open complete guide →11Torque SpecsChevy 350 Rocker Arm Adjustment and Poly-Lock Torque
For Chevrolet Performance's covered self-aligning aluminum roller-rocker kit, set each hydraulic lifter at zero lash on the cam base circle, then turn the adjusting nut another 1/2 to 1 turn.
Open complete guide →12Torque SpecsChevrolet Performance 350 Flywheel Bolt Torque
Chevrolet Performance specifies 65–70 lb-ft (88–95 N·m) for the flywheel bolts on its covered 350/290 HP long-block package.
Open complete guide →13Torque Specs1988 Chevy 350 Flexplate Bolt Torque Specs
For the covered 1988 Chevrolet C1500 5.
Open complete guide →14Torque SpecsChevrolet Performance 350 Harmonic Balancer Bolt Torque
Chevrolet Performance specifies 63 lb-ft (85 N·m) for the crankshaft-balancer retaining bolt on its covered 350/290 HP long-block package.
Open complete guide →15Torque SpecsChevy 350 Starter Bolt Torque Specs and Fit Checks
Chevrolet Performance does not publish one universal Chevy 350 starter-bolt number: its 350 HO Turn Key guide specifies 30 lb-ft (40 N·m), while the 350 HO Deluxe and 350/265 HP long-block guides specify 35 lb-ft (48 N·m).
Open complete guide →16Torque Specs1996 Chevy 350 Exhaust Manifold Bolt Torque
For the covered 1996 Chevrolet C1500 5.
Open complete guide →17Torque SpecsChevy 350 Oil Pan Bolt Torque Specs by Location
For the Chevrolet Performance 350 HO Deluxe, tighten the oil-pan side-rail bolts to 97 in-lb (11 N·m) and the corner bolts to 15 lb-ft (20 N·m).
Open complete guide →18Torque SpecsChevy 350 Water Pump Bolt Torque Specs
Chevrolet Performance specifies 30 lb-ft (40 N·m) for the water-pump bolts in its 350/265 HP long-block guide.
Open complete guide →19Torque SpecsChevy 350 Timing Cover Bolt Torque Specs
Chevrolet Performance specifies 97 in-lb (11 N·m) for the front-cover bolts on the 350 HO Deluxe.
Open complete guide →20Mechanical DiagramsChevy 350 Oil Galley Plug Diagram and Block-Prep Checklist
A Gen I Chevy 350 normally seals its main oil drillings with plugs at the rear of the block and at the front behind the timing set, but plug style, depth, quantity and access vary by block casting and machining.
Open complete guide →21Mechanical DiagramsChevy 350 Quadrajet Vacuum Line Diagram and Port Guide
A Quadrajet-equipped Chevy 350 cannot be routed correctly from engine size alone.
Open complete guide →22Mechanical DiagramsChevy 350 Starter Solenoid Wiring: B, S and R Terminals Explained
On a conventional starter-mounted Delco solenoid, the large battery or B terminal receives the battery-positive cable and may also serve as the vehicle's main distribution junction when the factory harness is designed that way.
Open complete guide →23Mechanical DiagramsChevy 350 Three-Wire Alternator Diagram: BAT, Terminal 1 and Terminal 2
For a Delco Remy 10SI/12SI/15SI-style three-wire alternator, connect the large BAT output to the battery-positive/common charging junction through cable and circuit protection sized for the alternator and vehicle.
Open complete guide →24Bolt Torque SequencesChevy 350 Intake Manifold Bolt Pattern: 12-Bolt vs. Vortec
A Chevrolet 350 does not have one universal intake-manifold bolt pattern.
Open complete guide →25Bolt Torque SequencesChevy 350 Exhaust Manifold Torque Sequence Diagram
For the cited 1998 Chevrolet K1500 L31 5.
Open complete guide →26Valve SpecificationsChevy 350 Cold Valve Lash Adjustment Diagram
On a cold Chevy 350, first identify the lifters.
Open complete guide →27Timing & IgnitionChevy 350 Camshaft Installation Alignment Diagram
For a standard-position Gen I Chevy 350 timing set, install the crank sprocket mark at 12 o'clock and the cam sprocket mark at 6 o'clock so the two marks face each other.
Open complete guide →28Bolt Torque SequencesChevy 350 Flexplate Torque Sequence Diagram
For the cited 1998-1999 Chevrolet L31 5.
Open complete guide →29Bolt Torque SequencesChevy 350 Timing Cover Bolt Pattern Diagram
Chevrolet's current 350/265 Gen I guide specifies 11 N-m (97 in-lb) for its engine front-cover bolts.
Open complete guide →30Bolt Torque SequencesChevy 350 Water Pump Bolt Pattern Diagram
For the cited Chevrolet Performance early small-block drive and current 350/265 branch, install the mechanical water pump with four mapped bolts and tighten evenly in crossed stages to 40 N-m (30 lb-ft).
Open complete guide →31Bolt Torque SequencesChevy 350 Valve Cover Bolt Torque Pattern Diagram
For Chevrolet Performance's center-bolt die-cast small-block covers, tighten the middle two bolts first, then the two end bolts, and finish at 6–8 lb-ft.
Open complete guide →Fastener type, lubricant, cylinder heads, oil pan, ignition and valvetrain can all change a specification. Each guide includes an application note and primary source trail.