Thread: GM Crate motor 12499529

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HELP please-------- need to choose which rocker arms 1.5 for this engine when calling NAPA, AUTOZONE they are asking me what year motor? and make & model of vehicle,

12499529 - 350/290 HP V8 Crate Engine
The HP 350/290 is GM Performance Parts’ value leading crate engine, with 290 horsepower @ 5100 RPM, and 326 lb-ft of torque @ 3,750 RPM on 87 octane fuel. The 350/290 HP will provide great long term durability with its 4-bolt mains, PM steel rods, strong cast aluminum pistons. The camshaft has .450” intake and .460” exhaust lift with hydraulic flat tappets. The durable cast iron cylinder heads have 1.94” intake and 1.50” exhaust valves with 76 cc combustion chamber and process healthy amounts of air to deliver strong torque across the rpm range along with great mid-range horsepower. The heads have the conventional 12 bolt intake manifold attaching design used from 1955 through late 1980.

Horsepower: 290 HP @ 5,100 RPM Torque: 326 FT/LBS @ 3,750 RPM
Displacement: 350 C.I.D. Bore / Stoke 4.00” / 3.48”
Max. Rec. RPM: 5,100 RPM Comp. Ratio: 8.50:1
Heads: Cast Iron, 76 cc Valves: 10093027 - 1.940” I, 14095451- 1.500” E
Camshaft: 03896962 Hydraulic Flat Tappet
Camshaft Lift: .450” I, .460” E Duration @ 0.050": 222° I, 222° E
Lifters: 05232720 Flat Tappet Connecting Rod: 10108688 Powdered Metal
Block: 10066034 - 4 Bolt M., Iron, 2-piece S. Pistons & Pins: 12514101 Aluminum
Crankshaft: Cast Iron Nodular, 3.480" Stroke Piston Ring: 12507985
Rocker Arm: 10089648 - 1.5 Ratio Stamped Steel Head Gasket: 10105117
Oil Pump: 12555284 Oil Pan: 10066039
Ignition Timing: 34° BTDC total @ 3,000 RPM Fuel: 87 Octane
Spark Plug: R45TS, Gap @ .035 For Points Distributor or .045 For HEI Distributor
Technical Notes: 1) Distributor with melonized steel gear MUST be used with steel camshafts or engine damage will occur. GM recommends their HEI distributor P/N 93440806 if you need a complete distributor and not just a hardened gear.
2) Use ported vacuum for vacuum advance when setting timing.