454 CID (7.4L) / 502 CID (8.2L) SERVICE MANUAL NUMBER 23
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90-861326--1 MARCH 1999
Lubricants / Sealants / Adhesives
DESCRIPTION PART NUMBER
Quicksilver Loctite 27131 92-809820
Quicksilver Perfect Seal 92-34227--1
Quicksilver RTV Sealer / Loctite 587 92-809826
General Motors Cam and Lifter Prelube or
Equivalent
Obtain Locally
Engine Specifications
454 Mag / 502 Mag / 8.2L (Except 7.4L MPI) Engine Specifications
NOTICE
Unit Of Measurement: U.S. Quarts (Liters)
All capacities are approximate fluid measures.
MODEL 454 MAG 502 MAG / 8.2L
Displacement 454 cid (7.4L) 502 cid (8.2L)
Bore 4.25 (108) 4.46 (113.28)
Stroke 4.00 (101.6)
Compression Ratio 8.6:1 8.75:1
Heads Cast Iron (Rectangular Port)
Intake Manifold Aluminum With Brass Water Passage Inserts
Block Cast Iron (4 Bolt Main Bearing Caps)
Rods Forged Steel
Pistons Forged Aluminum
Crankshaft Forged Steel
Camshaft Steel
Engine Compartment
Pressure Differential
2 in H
2
O (0.5 kPa)
Engine Compartment
Temperature
Maximum 176° (80° C)
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