engine

Engine

Engine Specifications
Camshaft Specifications
Transmission Info.
Head Information
Calculators
Pictures

Engine Specifications:

Displacement (0.030" over)

306.1ci

Bore x Stroke

4.030" x 3.000"

Connecting Rod Length

5.090"

Pistons

Federal-Mogul L2488F-30

Piston Rings

L2488F 1/16, 1/16, 3/16

Piston Weight

597g

Piston Compression Distance

1.619"

Piston Volume

1.6cc (flat, four reliefs)

Head Gasket

Fel-Pro P/N 1011-2

Head Gasket Bore

4.100"

Head Gasket Compressed Thickness

0.039"

Head Gasket Compressed Volume

8.5cc

Combustion Chamber Volume

61cc

Crank Centerline to Deck

8.206"

Piston-to-Deck Height

-.003" (above deck)

Rod/Stroke Ratio (R/S)

1.696

Camshaft

Trick Flow P/N TFS-51402000 Duration 221/225 Lift .499"/.510" (w/1.6 rockers) LDA 112

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5.0L Camshafts

Ford Motorsport Cams

Intake @ (.050")

Exhaust @ (.050")

Duration

Lift (Inches)

Lobe Center

Part Number

Rocker

Type

Open

Close

Open

Close

INT.

EXH.

Lobe

Valve

INT.

EXH.

M-6250-B303

1.60

Hyd

5 BTC

39 ABC

49 BBC

5 BTC

284

224

284

224

.300 I

.300 E

.480 I

.480 E

107

117

M-6250-E303

1.60

Hyd

0 BTC

40 ABC

40 BBC

0 BTC

282

220

282

220

.311 I

.311 E

.498 I

.498 E

110

110

M-6250-F303

1.60

Hyd

4 BTC

42 ABC

52 BBC

6 BTC

288

226

288

226

.320 I

.320 E

.512 I

.512 E

109

119

M-6250-X303

1.60

Hyd

5 BTC

39 ABC

49 BBC

5 BTC

286

224

286

224

.339 I

.339 E

.542 I

.542 E

107

117

M-6250-Z303

1.60

Hyd

7 BTC

41 ABC

51 BBC

3 ATC

290

228

290

228

.345 I

.345 E

.542 I

.542 E

107

117

TrickFlow Cam

Intake @ .050"

Exhaust @ .050"

Duration

Lift (Inches)

Lobe Center

Part Number

Rocker

Type

Open

Close

Open

Close

INT.

EXH.

Lobe

Valve

INT.

EXH.

TFS-51402000

1.60

Hyd

3 BTC

38 ABC

49 BBC

4 BTC

275

221

279

225

.312 I

.319 E

.499 I

.510 E

108

116

The "duration" figures in yellow are taken at .050" tappet lift, the larger figure is the advertised duration. For comparison purposes, add intake and exhaust lobe centers and divide by 2 to calculate "camshaft centerline" specifications.

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Transmission Information

Transmission
Type

Torque
Capacity

Gear Ratios

1st

2nd

3rd

4th

5th

(M-7003-A)
Standard T-5

305 ft./lbs.

3.35

1.93

1.29

1.00

0.68

(M-7003-X)
T-5 with
M-7102-X
M-7113-X
M-7340-X

325 ft./lbs.

3.35

1.93

1.29

1.00

0.68

M-7003-X
with
2.95 upgrade

325 ft./lbs.

2.95

1.93

1.29

1.00

0.68

M-7003-Z

330 ft./lbs.

2.95

1.94

1.34

1.00

0.63

(M-7003-R58)
Cobra "R"
Tremec

350 ft./lbs.

3.27

1.98

1.34

1.00

0.68

M-7003-R58
with
M-7110-T
(Tremec upgrade)

350 ft./lbs.

3.27

1.98

1.34

1.00

0.83

Lubrication

Type

Capacity

Dextron II Series D

5.6 Pints

Various Transmission Related Torque Specs.

Item

Torque

Bellhousing to Engine Bolts

28-38 ft/lbs

Bellhousing to Transmission Bolts

48 ft/lbs

Bearing Retainer

11-20 ft/lbs

Backup Lamp Switch

12-18 ft/lbs

Cluster Gear Rear Bearing Retainer

11-15 ft/lbs

Clutch Self-Adjuster Quadrant Nut

17-26 ft/lbs

Drain Plug

15-30 ft/lbs

Driveshaft Flange Bolts

70-95 ft/lbs

Extension Housing

20-45 ft/lbs

Flywheel Bolts

75-85 ft/lbs

Neutral Sensing Switch

12-18 ft/lbs

Pedal Support Bracket Bolts/Nuts

13-25 ft/lbs

Preasure Plate to Flywheel

12-24 ft/lbs

Shift Cover

6-11 ft/lbs

Shift Lever to Transmission

23-32 ft/lbs

Speedometer Cable Retaining Screw

36-45 in/lbs

Top Gear Sensing Switch

12-18 ft/lbs

Turret Cover

11-15 ft/lbs

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Calculators

^{JavaScript courtesy of Stan Weiss,}^{World
Wide Enterprises}

Compression Ratio Calculator

Fuel Injector Size

Fuel Injector Flow Rate

Estimated MPH based on HP

Estimated ET based on HP

Estimated ET based on MPH

Estimated HP based on ET

Estimated HP based on MPH

Estimated HP with Blower

MPH @ RPM

RPM @ MPH

Speedometer Gear Selector

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Pictures

Crankshaft end-play being checked.

Double roller timing chain installed. The cam was degree'd and set at 0 degrees advance.

Bottom end assembled with forged flat top pistons. Compression ratio is 9.9:1

Water pump and timing cover were polished and clear coated with Nyalic

Timing cover and water pump installed and sealed with Permatex Ultra Blue.

A high volume oil pump came with the rebuild kit. It required minor mods. (See larger photo)

Stock valve covers are being used after polishing.

Alternator was rebuilt and polished including the stock stainless steel fan.

A few of the other polished parts.

Piston to valve clearance was checked with modeling clay. After the engine is rotated the clay can be sliced and measured.

Trick Flow heads and Crane roller rockers are installed and adjusted. 24# injectors are installed with the Trick Flow lower manifold.

Manifold upper with 70mm Edelbrock EGR spacer and throttle body were installed next.

ASP underdrive pulleys are used and a Motorsport A/C eliminator kit relocates the power steering pump to the original A/C position.

A 72" belt fits just right with the 24% underdrive pulley set. Alternator will make full charge at 900 rpm.

The engine is basically complete now. A Motorsport 'King Cobra' clutch set and ARP flywheel bolts are being used but they can't be installed with the engine on the stand.

Various hoses, etc. added. Engine is complete except for ignition wires. Pro-M bullet 75mm MAF will be added after the engine is installed.

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Displacement (0.030" over)	306.1ci
Bore x Stroke	4.030" x 3.000"
Connecting Rod Length	5.090"
Pistons	Federal-Mogul L2488F-30
Piston Rings	L2488F 1/16, 1/16, 3/16
Piston Weight	597g
Piston Compression Distance	1.619"
Piston Volume	1.6cc (flat, four reliefs)
Head Gasket	Fel-Pro P/N 1011-2
Head Gasket Bore	4.100"
Head Gasket Compressed Thickness	0.039"
Head Gasket Compressed Volume	8.5cc
Combustion Chamber Volume	61cc
Crank Centerline to Deck	8.206"
Piston-to-Deck Height	-.003" (above deck)
Rod/Stroke Ratio (R/S)	1.696
Camshaft	Trick Flow P/N TFS-51402000 Duration 221/225 Lift .499"/.510" (w/1.6 rockers) LDA 112

Transmission Type	Torque Capacity	Gear Ratios
Transmission Type	Torque Capacity	1st	2nd	3rd	4th	5th
(M-7003-A) Standard T-5	305 ft./lbs.	3.35	1.93	1.29	1.00	0.68
(M-7003-X) T-5 with M-7102-X M-7113-X M-7340-X	325 ft./lbs.	3.35	1.93	1.29	1.00	0.68
M-7003-X with 2.95 upgrade	325 ft./lbs.	2.95	1.93	1.29	1.00	0.68
M-7003-Z	330 ft./lbs.	2.95	1.94	1.34	1.00	0.63
(M-7003-R58) Cobra "R" Tremec	350 ft./lbs.	3.27	1.98	1.34	1.00	0.68
M-7003-R58 with M-7110-T (Tremec upgrade)	350 ft./lbs.	3.27	1.98	1.34	1.00	0.83

Various Transmission Related Torque Specs.
Item	Torque
Bellhousing to Engine Bolts	28-38 ft/lbs
Bellhousing to Transmission Bolts	48 ft/lbs
Bearing Retainer	11-20 ft/lbs
Backup Lamp Switch	12-18 ft/lbs
Cluster Gear Rear Bearing Retainer	11-15 ft/lbs
Clutch Self-Adjuster Quadrant Nut	17-26 ft/lbs
Drain Plug	15-30 ft/lbs
Driveshaft Flange Bolts	70-95 ft/lbs
Extension Housing	20-45 ft/lbs
Flywheel Bolts	75-85 ft/lbs
Neutral Sensing Switch	12-18 ft/lbs
Pedal Support Bracket Bolts/Nuts	13-25 ft/lbs
Preasure Plate to Flywheel	12-24 ft/lbs
Shift Cover	6-11 ft/lbs
Shift Lever to Transmission	23-32 ft/lbs
Speedometer Cable Retaining Screw	36-45 in/lbs
Top Gear Sensing Switch	12-18 ft/lbs
Turret Cover	11-15 ft/lbs

	Crankshaft end-play being checked.		Double roller timing chain installed. The cam was degree'd and set at 0 degrees advance.
	Bottom end assembled with forged flat top pistons. Compression ratio is 9.9:1		Water pump and timing cover were polished and clear coated with Nyalic
	Timing cover and water pump installed and sealed with Permatex Ultra Blue.		A high volume oil pump came with the rebuild kit. It required minor mods. (See larger photo)
	Stock valve covers are being used after polishing.		Alternator was rebuilt and polished including the stock stainless steel fan.
	A few of the other polished parts.		Piston to valve clearance was checked with modeling clay. After the engine is rotated the clay can be sliced and measured.
	Trick Flow heads and Crane roller rockers are installed and adjusted. 24# injectors are installed with the Trick Flow lower manifold.		Manifold upper with 70mm Edelbrock EGR spacer and throttle body were installed next.
	ASP underdrive pulleys are used and a Motorsport A/C eliminator kit relocates the power steering pump to the original A/C position.		A 72" belt fits just right with the 24% underdrive pulley set. Alternator will make full charge at 900 rpm.
	The engine is basically complete now. A Motorsport 'King Cobra' clutch set and ARP flywheel bolts are being used but they can't be installed with the engine on the stand.		Various hoses, etc. added. Engine is complete except for ignition wires. Pro-M bullet 75mm MAF will be added after the engine is installed.