BLUE PRINT SPECIFICATIONS: Part 3

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PUSH ROD LENGTH:

STOCK GM LIFTERS:

 

 

FLAT TAPPET :

HYD. ROLLER :

 7.790 - inch

 7.290 - Inch

OIL INFORMATION:

OIL PRESSURE:

5 - 6 G.P.M. @ 65 - 80 PSI

NOTE: SAE 30 @ 230° F. Oil pump turns at half engine speed. A good rule of thumb is 10 PSI for every 1000 RPM.

OIL TYPE:

 SAE 30 - 50

NOTE: Aircraft or other ashless H.P. oil. An ashless additive is specified to prevent pre-ignition.

OIL TEMPERATURE:

 Between 150° and 270 F°

NOTE: With a maximum of 300° F in the pan.

NOTE: See #63 Oil Pump

 

 

 

SPARK PLUGS: Type AC

TRACK RACING:

DRAG RACE:

 436 TS - 438 TS

 441 TS - 443 TS

NOTE: See Spark Plug Torque Chart

 

 

 

SPARK ADVANCE:

MAXIMUM.

 36 - 40 Degrees

MAXIMUM ENGINE RPM:

TRACK:

DRAG:

 6800 - 7600

 8000

NOTE: Maximum RPM depends on engine the stroke being used. The specifications listed here are for a Blue Printed 3.480-inch stroke engine. (267,305,350)

NOTE: See Piston Speed vs RPM

 

 

 

CYLINDER HEAD GASKET:

PRODUCTION GASKET:

 0.018-inch approx.

Steel shim with raised beads. For stock and mild modified.

STAINLESS STEEL SHIM:

 0.017-inch

Designed similar to production except for the material. Recommended for HIGH PERFORMANCE racing engines and marine use where Maximum power is not used for long periods

STAINLESS COMPOSITION:

 0.039-inch

Constructed of two layers of stainless with composition material between. Suitable for racing and marine use. Use on 4 and 4-1/8-inch bore blocks.

 

NOTE: All head gaskets should be installed with a commercial head gasket sealer. High compression engines may benefit by using aluminum paint for a gasket sealer. Steel shim gaskets do not need retorquing but all sandwich and composition gaskets should be retorqued HOT or COLD or as specified by the manufacturer .

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