Twin-Cam Compression and Engine Displacement Calculator
Choose Engine Size
88 ci 3.750x4.000
95 ci 3.875x4.000
96 ci 3.750x4.375
98 ci 3.938x4.000
103 ci 3.875x4.375
103 ci 4.060x4.000
107 ci 3.938x4.375
107 ci 4.125x4.000
110 ci 4.000x4.375
113 ci 4.060x4.375
113 ci 4.250x4.000
116 ci 4.000x4.625
117 ci 4.060x4.500
117 ci 4.125x4.375
120 ci 4.375x4.000
120 ci 4.060x4.625
124 ci 4.250x4.375
131 ci 4.375x4.375
Use for custom configuration or oversize bore.
Leave at 0.000 to use default values OR change any value to override default.
STD Bore
Alternate Bore
Stroke
Alternate Stroke
Rod Length
Alt Rod Length
Head Gasket Thickness
inches
Stock=
.045
, Cometic MLS
.030
or
.040
Head Gasket Bore
inches
Stock 88, 96=
3.850
, 95, 98, 103 and 107=
3.910
Cylinder Head Volume
CC's
Your measured volume should be entered here
Deck Height Front Cyl
inches
Negative number if piston
Deck Height Rear Cyl
inches
is ABOVE cylinder
Optional
Piston Diameter
inches
Measure above top ring
**
**
Leave Both at Zero OR enter BOTH values
Optional
Top Ring Land
inches
Distance from piston crown to top ring
**
Piston Dome Volume
CC's
Stock & Flat tops=
-1.0 to -1.5
**
10.25:1 SE Cast 95=
10.5 to 11.0
**
10.5:1 Forged 95=
11.5 to 13.0
**
Static Compression
:1
**
Total volume for 1
piston, not both
Engine Displacement
ci
cc
Corrected Compression
Choose Cam Here
HD Carbureted A
HD Injected B
HD Injected 2006
HD Injected 07-13
Andrews TW12
Andrews TW21
Andrews TW26
Andrews TW31
Andrews TW32
Andrews TW37
Andrews TW44
Andrews TW48
Andrews TW50
Andrews TW54
Andrews TW55
Andrews TW57
Andrews TW59
Andrews TW60
Andrews TW64
Andrews TW67
Black Widow BW39
Black Widow BW44
Black Widow BW47
Black Widow BW48
Black Widow BW49
Black Widow BW52
Black Widow BW53
Black Widow BW54
Black Widow BW55
Black Widow BW58
Black Widow BW SS59E
Black Widow BW62
Crane HTC-284-R
Crane HTC-298
Crane HTC-290-2GD
Crane HTC-296-2GD
Crane HTC-300-2GD
Crane HTC-302-2GD
Crane HTC-304-2GD
Crane HTC-310-2GD
Crane HTC-316-2GD
Cycle-Rama 575
Cycle-Rama 604
Cycle-Rama 630
Dave Mackie TC510/510G
Dave Mackie TC510L
Dave Mackie TC575L
Dave Mackie TC590/590G
Dave Mackie TC598G/598L
Dave Mackie TC630G
Edelbrock 1735
Edelbrock 1748
Feuling Reaper 525
Feuling Reaper 543
Feuling Reaper 574
Feuling Reaper 594
Feuling Reaper 630
Flo Headworks 550FH
Flo Headworks 575FH
Flo Headworks 600FH
Head Quarters TC-500-HC
Head Quarters TC-525-HC
Head Quarters TC-575-HC
Head Quarters TC-600-HC
Head Quarters HQ-0033
Head Quarters HQ-0034
Head Quarters HQ-0036
Head Quarters HQ-0037
Head Quarters HQ-0038
Head Quarters HQ-0039
Kuryakyn TC-1
Kuryakyn TC-2
Kuryakyn TC-26
Kuryakyn TC-4
Kuryakyn TC-5
Kuryakyn TC-46
Kuryakyn TC-546
Leineweber T3S
Leineweber T5S
Leineweber T7S
Leineweber T9S
Lunati 88100E/L
Lunati 88101E/L
Lunati 88102E/L
Lunati 88103E/L
Lunati 88104E/L
Lunati 88105E/L
Lunati 88110E/L
Lunati 88111E/L
Lunati 88112E/L
Lunati 88113E/L
Lunati 88114E/L
Lunati 88115E/L
Lunati 88116E/L
Lunati 88117E/L
Lunati 88118E/L
Red Shift 525
Red Shift 527
Red Shift 557
Red Shift 575
Red Shift 577
Red Shift 627
Red Shift 647
Red Shift 657
Red Shift 727
RevTech 601985
RevTech 601986
RevTech 601987
RevTech 601988
RevTech 601989
R&R TC62
R&R TC688
R&R 525
R&R 615
S&S 475
S&S 509
S&S 510
S&S 546
S&S 551
S&S 557
S&S 570
S&S 583
S&S 585
S&S 625
S&S 640
S&S 675
Screamin Eagle SE-203
Screamin Eagle SE-204
Screamin Eagle SE-211
Screamin Eagle SE-251
Screamin Eagle SE-253
Screamin Eagle SE-254E
Screamin Eagle SE-255
Screamin Eagle SE-257
Screamin Eagle SE-258
Screamin Eagle SE-259E
Screamin Eagle SE-260
Screamin Eagle SE-263E
Screamin Eagle SE-264
Screamin Eagle SE-266E
Screamin Eagle RX-267
Tman 555 Torqster
Tman 600SM
Tman 660SM
Tman 555
Tman TR-525C
Tman TR-590G
Tman TR-600G
Tman TR-625G
Tman TR-650G
Tman TR-662-1
Tman TR-662-2
Tman TR-662-3
Tman TR-725G
Tman TR-790G
Wood TW-222
Wood TW-555
Wood TW-777
Wood TW-888
Wood TW-5/G/-6
Wood TW-6/G/-6/-7
Wood TW-6H/HG
Wood TW-7H/HG/-7
Wood TW-8/G/-6/-7
Wood TW-9G/-6
Wood TW-9B/G/-6/-7
Wood TW-9F/G/-6/-7
Wood TW-10FG
Wood TW-400/G/-6/-7
Wood TW-408-44
Wood TW-408/G/-6/-7
Wood TW-62G
Wood TW-68G/-7
Wood TW-72G
Wood TW-75
4
2
0
-2
-4
Cam Offset Degrees
**
OR
**
Applies to both chosen or entered value
**
Enter Intake Close ABDC
**
(Set to ZERO if using a Selected Cam)
Convenience Calculator
Altitude Correction
From
cc
ci
mm
Inch
Feet Above Sea Level
To
cc
ci
mm
Inch
Corrected Compression
:1
Cold Cranking Compression
Values in
RED
are approximate.
Use actual measured values only.
This calculator is supplied as a convenience and intended to be used for estimates only.
We make no warranties, implied or expressed, to the accuracy of any data or calculations presented here.
** Terms Of Use **
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