This is a factory sealed GMPP crate engine package, complete from high rise dual plane intake manifold, stamped steel valve covers
with racing style breathers, and 8 quart single kick-out circle track racing oil pan.
Keys - scperformanceeng, gmperformanceeng, or gmgoodwrencheng for SC, GM, or Goodwrench engines. Use allengine for a complete list of all three. |
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88958602 GMR 350/350 Circle Track Engine
Great racing power at a reasonable cost (350 HP @ 5000 RPM - Torque 390 @ 4000 RPM)
This is a factory sealed crate engine package, complete from high rise dual plane intake manifold, stamped steel valve covers
with racing style breathers, and 8 quart single kick-out circle track racing oil pan.
The 350 engine is a great value with the nodular cast iron crankshaft, iron vortec heads with 1.94”/1.50” valves, flat tappet
hydraulic lifters, and HEI distributor. GM uses the 330 horsepower 350 HO as the base for this engine. |
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Technical Notes: These engines are sealed at the intake manifold, cylinder head, front cover, and oil pan with special
twist off bolt heads. The 350 HP @ 5000 RPM was derived from a Superflow dyno using a 4 barrel 650 cfm Holley carburetor
80541-1, 32” long by 1 5/8” to a 1 3/4” stepped header with a 3” collector, and 92 octane unleaded gasoline. This engine
package DOES NOT include a water pump. Oil pan clears most GM rear steer chassis with stock engine location. Oil pan is 8” deep
at sump. |
| Horsepower: |
350 @ 5,000 RPM |
| Torque: |
390 ft./lbs. @ 3,800 RPM |
| Max. Rec. RPM: |
5,500 |
| Compression Ratio: |
9.1:1 |
| Block: |
10105123 Cast iron four bolt with 1-piece rear main seal. |
| Crankshaft: |
14088527 Nodular cast iron. |
| Connecting Rods: |
10108688 PM Steel |
| Pistons: |
12361371 Cast Aluminum |
| Piston Rings: |
14089025 |
| Camshaft: |
20502476; Lift: .435” I, .460” E; Duration @ .050: 212° I, 222° E |
| Lifters: |
Hydraulic Flat Tappet |
| Timing Chain: |
14087014 |
| Valve Cover:: |
25534359 Kit With Breather Tubes |
| Oil Breather:: |
25534355 Breather Kit |
| Cylinder Heads: |
12558060 Cast Iron Vortec, 64cc combustion chambers. |
| Intake Valves: |
10241743 1.94” |
| Exhaust Valves |
12550901 1.50” |
| Valve Springs: |
10212811 |
| Rocker Arms: |
10089648 1.5 Ratio |
| Rocker Arm Nut: |
25534352 Special, ”Kool Nut Design” |
| Intake Manifold: |
12366573 Aluminum High Rise Dual Plane |
| Distributor: |
01104067 GM HEI |
| Valve Lash: |
Zero |
| Spark Plugs: |
R44LTS Gap @ .045, Rapid Fire #8 Gap @ .035 |
| Ignition Timing: |
Max. 32° Total @ 4,000 RPM |
| Fuel: |
92 Octane Unleaded Gasoline |
| Oil Pan: |
25534353 8 Quart Black Powder Coated Circle Track With Oil Filter. It includes a full louvered windage tray, oil scraper, three trap doors,
oil level plug, 8” deep sump, a 3-1/2” kickout on the right side, and a 3/4” oil pick up tube. |
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Technical Notes: Carburetor, spark plug wires, starter, oil filter and oil filter adaptor, and exhaust manifolds are not
included. Distributor P/N 01104067 or melonized distributor gear P/N 10456403 must be used on all crate engines with steel camshafts. |
