FORD



SPECIFICATIONS

PART NO.
RING PACK
NOTES: HEAD PHOTO/EFFECTIVE HEAD VOL.
C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN
416W
V-8
4.000"
4.075"
6.200"
.0015"
1.251"
.9272"
FLAT TOP
9.500"
457/145g
KB261*
2-1/16

1-3/16


Head vol.-
Comp.ratio
55cc -13.2
60cc - 12.4
64cc - 11.8
69cc - 11.2
6.2"ROD

1)351W Stroker motor click here for details.

2)Pre-'71 blocks have .020" shorter deck height and do not provide adequate stock for squaring or cleaning up the block. KB pistons used in these blocks will be above deck.

SIZES Std.,.020,.030,.040,.060

+6.5cc
C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN
427
V-8
4.234"
3.784"
6.490"
.0020"
1.775"
.9752"
20cc D-cup
10.170"
687/143g
KB199*
2-5/64

1-3/16


Head vol.-
Comp.ratio
61cc -10.8
70cc - 9.9
74cc - 9.6

6.490"ROD

1)Lower compression than stock but legal for street use 1967 and earlier U.S., 1965 and earlier California.

2)Use 454 Std. Chevy rings for .020 oversize; Use 454 .020 Chevy rings for .040 oversize.

3)The connecting rod has to be modified to use this piston. The pin bore end has to be narrowed to 1" in width to allow proper side clearance.

SIZES Std.,.020,.040

+20cc
C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN
427
V-8
4.234"
3.784"
6.490"
.0020"
1.775"
.9752"
FLAT TOP
10.170"
724/143g
KB163*
2-5/64

1-3/16


Head vol.-
Comp.ratio
61cc -12.7
70cc - 11.4
74cc - 11.1

6.490"ROD

1)Use 454 Std. Chevy rings for .020 oversize; Use 454 .020 Chevy rings for .040 oversize.

2)The connecting rod has to be modified to use this piston. The pin bore end has to be narrowed to 1" in width to allow proper side clearance.

SIZES Std.,.020,.040

+5.5cc
C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN
428
V-8
4.132"
3.984"
6.490"
.0020"
1.780"
.9752"
STEP/D CUP
10.170"
/g
KB378*
2-5/64

1-3/16


Head vol.-
Comp.ratio
60cc -10.2
68cc - 9.5
73cc - 9.1
88cc - 8.1

6.490"ROD

1)With the choices of heads you can build a wide variety of compression ratios and in most cases get by with pump gas.

2)The Step D head design is intended to provide a suable quench and fast flame travel. You won't want a lot of ignition timing.

NEW ITEM. CHECK AVAILABILITY

SIZES .030, .040, .060

+28cc
PICTURE NOT AVAILABLE AT THIS TIME.
C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN
429
V-8
4.360"
3.590"
6.605"
.0020"
1.900"
1.0402"
FLAT TOP
10.320"
/166g
KB368*
2-5/64

1-3/16


Head vol.-
Comp.ratio
72cc - 11.6
76cc - 11.0
87cc - 10.0
97cc - 9.2
6.605" ROD

1)Available heads provide good compression ratio range.

2)9.2:1 compression ratio best when working with pump gas 10:1 is very marginal with premium in most cases all other use race gas or alcohol.

NEW ITEM. CHECK AVAILABILITY.

SIZES Std.,.020,.030,.040,.060

+2.5cc
PICTURE NOT AVAILABLE AT THIS TIME.
C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN
460
V-8
4.360"
3.850"
6.605"
.0020"
1.772"
1.0402"
22cc D-cup
10.320"
760/166g
KB138
2-5/64

1-3/16


Head vol.-
Comp.ratio
76cc -9.9
82cc - 9.4
91cc - 8.8
97cc - 8.4
6.605"ROD

1)Designated as O.E. replacement for engines manufactured in years 1968-87.

2)* All other years.

3)Pre-'71 blocks have .020" shorter deck height and do not provide adequate stock for squaring or cleaning up the block. KB pistons used in these blocks will be above deck.

SIZES Std.,.020,.030,.040,.060

+22cc
C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN
460
V-8
4.360"
3.850"
6.605"
.0020"
1.772"
1.0402"
15cc D-cup
10.320"
750/166g
KB206
2-5/64

1-3/16


Head vol.-
Comp.ratio
76cc -10.4
82cc - 9.9
91cc - 9.2
97cc - 8.8
6.605"ROD

1)Designated as O.E. replacement for engines manufactured in years 1988-91.

2)* All other years.

3)Pre-'71 blocks have .020" shorter deck height and do not provide adequate stock for squaring or cleaning up the block. KB pistons used in these blocks will be above deck.

SIZES Std.,.020,.030,.040,.060

+15cc
C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN
460
V-8
4.360"
3.850"
6.605"
.0020"
1.772"
1.0402"
FLAT TOP
10.320"
750/166g
KB137*
2-5/64

 1-3/16


Head vol.-
Comp.ratio
76cc -11.8
82cc - 11.1
91cc - 10.2
97cc - 9.7
6.605"ROD

1)Pre-'71 blocks have .020" shorter deck height and do not provide adequate stock for squaring or cleaning up the block. KB pistons used in these blocks will be above deck.

SIZES Std.,.020,.030,.040,.060

+2.5cc
C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN
501
V-8
4.360"
4.140"
6.700"
.0015"
1.530"
.990"
33cc Dish
10.320"
673/158g
KB318*
2-5/64 1-3/16




Head vol.-
Comp.ratio
76cc -9.6
82cc - 9.2
91cc - 8.7
97cc - 8.3
6.700"ROD

1)Pre-'71 blocks have .020" shorter deck height and do not provide adequate stock for squaring or cleaning up the block. KB pistons used in these blocks will be above deck.
2)460 Stroker motor click here for details.

NEW ITEM. AVAILABLE NOW

SIZES Std.,.020,.030,.040,.060

+33cc
PICTURE NOT AVAILABLE
C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN
501
V-8
4.360"
4.140"
6.800"
.0015"
1.430"
.990"
20cc Dish
10.320"
660/158g
KB152*
2-5/64

1-3/16


Head vol.-
Comp.ratio
76cc -10.7
82cc - 10.2
91cc - 9.5
97cc - 9.1
6.800"ROD

1)Pre-'71 blocks have .020" shorter deck height and do not provide adequate stock for squaring or cleaning up the block. KB pistons used in these blocks will be above deck.
2)460 Stroker motor click here for details.

NEW ITEM. AVAILABLE NOW.

SIZES Std.,.020,.030,.040,.060

+20cc

Part numbers with an asterisk * are not legal for sale or use on pollution controlled motor vehicles.


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