C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN

440
V-8
4.320"
3.750"
6.768"
.0020"
1.992"
1.094"
STEP HEAD
10.725"
775/191g

KB278*
2-5/64
1-3/16

---

Head vol.-
Comp.ratio
72cc -10.3
80cc - 9.6
85cc - 9.2
90cc - 8.8

6.768"ROD
1)Quench dome height .200".
2)Compression ratio is calculated .090" below deck.
3)KB278 was designed so the engine cannot be assembled without machining the quench dome. This was done so optimum quench can be attained. Assembly of the engine without reducing the quench dome will lead to engine failure. Note the C.R. listed will vary depending on how much the quench dome is reduced.


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

C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN

440
V-8
4.320"
3.750"
6.768"
.0020"
2.057"
1.094"
STEP HEAD
10.725"
775/191g

KB146*
2-1/16
1-3/16

KB236*
2-5/64
 1-3/16

---

Head vol.-
Comp.ratio
72cc -11.9
80cc - 10.9
85cc - 10.5
90cc - 9.9

6.768"ROD
1)Quench dome height .075".

2)For closed chamber cylinder heads quench dome must be machined off.

3)To achieve effective quench, head milling is usually required. Additional hand grinding may be required.

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

C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN

440
V-8
4.320"
3.750"
6.768"
.0020"
2.067"
1.094"
FLAT TOP
10.725"
770/191g

KB237*
2-5/64
1-3/16

---

Head vol.-
Comp.ratio
72cc -11.5
80cc - 10.6
85cc - 10.2
90cc - 9.7

6.768"ROD
1)Zero deck clearance can be achieved.





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

C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN

440
V-8
4.320"
3.750"
6.768"
.0020"
2.067"
1.094"
STEP/DOME
10.725"
/191g

KB363*
2-5/64
1-3/16

---

Head vol.-
Comp.ratio
72cc -14.6
80cc - 13.2
85cc - 12.4
90cc - 11.7

6.768"ROD
1)RACE GAS OR ALCOHOL ONLY!
2)Compression ratio calculated with non-quench dome area .060" above deck.
3)KB363 was designed so the engine cannot be assembled without machining the quench dome. This was done so optimum quench can be attained. ASSEMBLE OF THE ENGINE WITHOUT REDUCING THE QUENCH DOME WILL LEAD TO ENGINE FAILURE. Note the c.r. listed will vary depending on how much the quench dome is reduced.

NEW ITEM. CHECK AVAILABILITY.

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

C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN

450
V-8
4.342"
3.750"
6.358"
.0020"
1.722"
1.094"
STEP HEAD
9.980"
740/191g

KB215*
2-5/64
1-3/16

---

Head vol.-
Comp.ratio
72cc -12.1
80cc - 11.1
85cc - 10.6
90cc - 10.1

6.358"ROD
1)400 Stroker motor click here for details.
2)Quench dome height 0.95".
3)For closed chamber cylinder heads quench dome must be machined off.
4) Crankshaft counterweights have to be machined for block clearance. Rebalancing is required.

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

C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN

450
V-8
4.342"
3.750"
6.358"
.0015"
1.722"
1.094"
STEP HEAD
9.980"
705/191g

KB251*
2-5/64
1-3/16

---

Head vol.-
Comp.ratio
72cc -12.1
80cc - 10.6
85cc - 10.3
90cc - 10.1

6.358"ROD
1)400 Stroker motor click here for details.
2)Quench dome height .260". Machine quench dome height for .040" quench distance.
3)Compression ratios calculated using zero deck, with .040" gasket, dome machined to .100".
4) Crankshaft counterweights have to be machined for block clearance. Rebalancing is required.

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

C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN

450
V-8
4.342"
3.750"
6.768"
.0020"
1.327"
1.094"
STEP HEAD
9.980"
550/191g

KB280
2-5/64
1-3/16

---

Head vol.-
Comp.ratio
72cc -
80cc -
85cc -
90cc -

6.768"ROD
1)400 Stroker motor click here for details.

2)KB280 was designed so the engine cannot be assembled without machining the quench dome. This was done so optimum quench can be attained. Assembly of the engine without reducing the quench dome will lead to engine failure. Note the c.r. are not listed because they will vary depending on how much the quench dome is reduced.
3) Crankshaft counterweights have to be machined for block clearance. Rebalancing is required.

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

C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN

498
V-8
4.342"
4.150"
6.768"
.0015"
1.722"
1.094"
STEP HEAD
10.725"
705/191g

KB251*
2-5/64
1-3/16

---

Head vol.-
Comp.ratio
72cc -
80cc -
85cc -
90cc -

6.768"ROD
1)440 tall block with 4.15" Mopar crank.
2)Quench dome height .260".
3)Compression ratios calculated using .160" below deck, with .040" gasket and dome at .260".
4)Standard bore size for this piston is 4.342", .022" larger than 440 standard.

5)ASSEMBLY OF THE ENGINE WITHOUT REDUCING THE QUENCH DOME WILL LEAD TO ENGINE FAILURE. Note the cr are not listed because they will vary depending on how much the quench dome is reduced. CR similar to KB215.

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

C.I.D.
CYLINDER
BORE
STROKE
ROD LENGTH
MIN. CLEARANCE
COMP. HT.
PIN DIAMETER
HEAD TYPE
CRANK CL TO DECK
WT.PISTON/PIN

510
V-8
4.342"
4.250"
6.768"
.0015"
1.722"
1.094"
STEP HEAD
10.725"
705/191g

KB251*
2-5/64
1-3/16

---

Head vol.-
Comp.ratio
72cc -
80cc -
85cc -
90cc -

6.768"ROD
1)440 tall block with 4.25" stroker crank.
2)Quench dome height .260". Machine quench dome for .040" quench distance.
3)Compression ratios calculated using .110" below deck, with .040" gasket and dome machined to .210".
4)Standard bore size for this piston is 4.342", .022" larger than 440 standard.

5)ASSEMBLY OF THE ENGINE WITHOUT REDUCING THE QUENCH DOME WILL LEAD TO ENGINE FAILURE. Note the cr are not listed because they will vary depending on how much the quench dome is reduced. CR similar to KB215.

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