Year

Model

Valve Lash

Valve Angles

Valve
Spring
Installed
Height

Valve
Spring
Pressure
Lbs @ In

Valve Lift

Stem
Clearance

Stem
Diameter

Int.

Exh.

Seat

Face

Int.

Exh.

Intake

Exhaust

Int.

Exh.

1953

All

Zero

Zero

45

45

1 53/64

156@1 15/32

.366

.366

.0022-.0042

.0027-.0045

.3421

.3934

1954

All

Zero

Zero

45

45

1 53/64

156@1 15/32

.366

.366

.0022-.0042

.0027-.0045

.3421

.3934

1955

All

Zero

Zero

45

45

1 53/64

156@1 15/32

.403

.403

.0022-.0042

.0027-.0045

.3421

.3934

1956

All

Zero

Zero

45

45

1 7/8

190@1 31/64

.418

.418

.0017-.0040

.0022-.0045

.3421

.3934

1957

All

Zero

Zero

45

45

1 53/64

190@1 31/64

.419

.435

.0017-.0035

.0022-.0040

.3421

.3934

1958

All

Zero

Zero

45

45

1 53/64

227@1 7/16

.435

.437

.0017-.0035

.0022-.0040

.3421

.3934

1959

All

Zero

Zero

45

45

1 53/64

175@1 7/16

.419

.435

.0017-.0035

.0022-.0040

.3421

.3934