Part Number

Description

Crankshaft Duration at Lash Point (degrees)

Crankshaft Duration at .050" Tappet Lift (degrees)

Maximum Lift with 1.7:1 Rocker Ratio

Valve Lash

Lobe Centerlines (degrees)

Notes

10185060

Hydraulic flat tappet "454"

I: 3 2 8
E : 3 2 4

I: 2 2 0
E : 22 0

I: .500"
E : .500"

0

1 1 5

Good street high-performance and marine cam. Advanced 5 degrees. Use spring P/N 3970627. Used in Gen V 454 HO engine P/N 10185058.

14096209

Hydraulic flat tappet "502"

I: 3 2 8
E : 3 2 4

I: 2 2 0
E : 22 0

I: .500"
E : .500"

0

1 1 5

Good street high-performance and marine cam. Use spring P/N 3970627. Use in Gen V 502 HO engine P/N 10185058.

3904362

Mechanical flat tappet

I: 3 0 7
E : 2 9 8

I: 2 4 2
E : 24 2

I: .496"
E : .492"

I: .024"
E : .028"

1 1 4

LS-6 street mechanical lifter cam. Use spring P/N 3970627.

3959180

Mechanical flat tappet

I: 3 2 7
E : 3 3 3

I: 2 6 2
E : 2 7 3

I: .580"
E : .620"

I: .024"
E : .026"

1 1 0

ZL-1 and LS-7 mechanical lifter competition cam. Good in 427-454. Use spring P/N 3916164.

12366543

Steel roller

N/A

I: 2 24
E : 234

I: .527"
E : .544"

0

1 1 0

502/502 Special engine Must use distributor gear P/N 10456413.

24502611

Steel roller

N/A

I: 2 11
E : 23 0

I: .510"
E : .540"

0

1 1 2

502 HO engine, 454 HO engine Must use distributor gear P/N 10456413.

Technical Note: Distributor P/N 1104067 or melonized distributor gear P/N 10456413 must be used on all crate engines with steel camshafts.

Part Number

Description

Crankshaft Duration at .050" Tappet Lift (degrees)

Maximum Lift with 1.7:1 Rocker Ratio

Lobe Centerlines (degrees)

Notes

12353920

Hydraulic flat tappet kits

I:  228
E:238

I:  .540
E: .540

1 1 4

see part number description

12353921

Hydraulic flat tappet kits

I: 208
E:218

I: .475
E: .500

1 1 2

see part number description

12353922

Hydraulic flat tappet kits

I: 218
E:228

I: .500
E: .500

1 1 4

see part number description

12361314

Camshaft & lifter kits

I: 202
E:210

I: .468
E: .485

1 1 0

see part number description

12361316

Camshaft flat tappet kits

I: 210
E:218

I: .485
E: .490

1 1 5

see part number description

12364056

Hydraulic flat tappet kits

I: 192
E:203

I: .398
E:.430

110.5

see part number description

12364055

Hydraulic flat tappet kits

I: 214
E:218

I: .461
E:.480

1 1 5

see part number description

12364057

Mechanical flat tappet kits

I: 242
E:242

I: .520
E:.520

1 1 4

see part number description

12364058

Mechanical flat tappet kits

I: 264
E:269

I: .560
E: .580

1 1 2

see part number description