SERVICE REPLACEMENT HEADS:

 

 

 

 

 

 

340 292:

 

 

3991 492:

 

 

462 624:

 

 

 

10088 113:

 

  340 292:SERVICE REPLACEMENT

HEAD MARKING

 

 

CHAMBER VIEW

 Turbo Head

 

 

 340 292 "TURBO HEAD"

 

 

 

74 CC

YEAR

CID / HP

VALVE SIZE

CC

IN

EX

1973-1979

2.02

1.60

64

 NOTES: "Turbo Head". Heavy Duty Service. Off road racing. Angle plug.

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  462 624: SERVICE REPLACEMENT

HEAD MARKING

 

 

CHAMBER VIEW

 

 

 

 

 

 

 

  CC

Part No.

 

MATERIAL

SPARK PLUG ANGLE

HEAT RISER

INTAKE RUNNER VOLUME

VALVE SIZE

CC

IN

EX

460045

Cast Iron

Straight

Yes

161 cc

2.02

1.60

76

NOTES: LT-1 Design, Guide plates and screw in studs. Valve seats are heated treated for unleaded fuel.

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  3991 492: SERVICE REPLACEMENT

HEAD MARKING

 

 

CHAMBER VIEW

 

 

 

 

 

 

 

  CC

Part No.

 

MATERIAL

SPARK PLUG ANGLE

HEAT RISER

INTAKE RUNNER VOLUME

VALVE SIZE

CC

IN

EX

3987376

Cast Iron

Straight

Yes

157 cc

2.02

1.60

64

NOTE: Large Ports. Screw in Studs. Guide plates. Originally installed on 302 Z-28 and 350 LT-1

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  10088 113: SERVICE REPLACEMENT

HEAD MARKING

 

 

CHAMBER VIEW

 

 

 

 

 1988-1990

 

 

58 CC

Part No.

 

MATERIAL

SPARK PLUG ANGLE

HEAT RISER

INTAKE RUNNER VOLUME

VALVE SIZE

CC

IN

EX

10185087

Aluminum

Angled

No

1.63 cc

1.94

1.50

58

NOTES: Corvette Design. Used on 350-HO engine.

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