1966 Mustang 200 cid Engine

1966 Mustang Engine Information & Specs – 200 Thriftpower Six

200 Thriftpower Inline 6 Technical Specs & Data

1966 Mustang Engine Information – Thriftpower Inline 6 (200 cubic inch)

The 200 cubic inch engine was used in Mustangs from 1965 -1970. It was an inline 6 cylinder engine with the block and valve covers painted blue. The exhaust was a single exhaust pipe with a single inlet/outlet transverse mounted muffler behind the axle and in front of the gas tank.

Engine Basics

Year 1966
Cylinders 6
Displacement 200 cu / 3.3 liter
Power (hp) 120 hp
Compression 9.2/1
Bore x Stroke 3.680 x 3.126

Engine Specs (200 cid inline 6)

Spark Plugs Motorcraft, Delco, Fram
Oil filter
Gas Filter
Air Filter
PCV
Oil 4.5 quarts of 10W30 or 10W40
Oil Pressure 35 – 55 PSI
Points Gap and Dwell at xxx RPM
Timing 6 Degrees BTDC Manual & 12 Degrees BTDC Automatic
Valve adjustment
Valve size
Valve arrangement E I I E I E E I E I I E Front to rear
Manifold Vacuum 17 inches at idle
Warm Idle Manual Trans 575-600 RPM
Warm Idle Auto Trans 500-525 RPM
Carburetor CFM
Bore and stroke 3.680 X 3.126
Compression 9.2:1 (155 – 195 psi @ cranking speed)
Combustion chamber 49.3 – 50.3 cc
HP and Torque 120 hp at 4400 RPM and 190 ft/lbs torque at 2400 RPM
Taxable HP 32.5
Distributor Rotation Counter-Clockwise
Firing order 1 – 5 – 3 – 6 – 2 – 4
Firing order 1 – 5 – 3 – 6 – 2 – 4

Engine Torque Specifications

All torque specifications provided in this table are those recommended by FORD. If you use special bolts, follow the torque specifications provided by the manufacturer. I recommend that you use the 3 step torque technique where you torque down the bolts in three equal steps. Once you have reached the maximum recommended torque setting, go around one more time. Do not torque in a circular pattern. Always torque cross to cross.

Head bolts 70-75
Crank cap bolts 60-70
Rod end caps 19-24
Intake bolts none
Exhaust manifold bolts 13-18
Harmonic damper 85-100
A/C Compressor mounts
Engine fan
Motor mounts to engine
Bellhousing bolts
Trans to bellhousing
Flywheel to Crankshaft 75-85
Oil pan bolts
Valve cover bolts
Carburetor mount bolts
Oil pickup
Spark plugs
Trans. inspection plate
Water pump bolts

Crankshaft Bearing Journal Specifications

Main Bearing Journal (inches)

Journal Diameter 2.2482 – 2.2490
Oil Clearance 0.0005- 0.0022
Shaft end play 0.004- 0.008
Thrust on number 5

Connecting Rod Journals

Journal Diameter 2.1232- 2.1240
Oil Clearance 0.008- 0.0024
Side clearance 0.003- 0.010

Piston Ring Specifications

Comp Ring Width

Top 0.0774- 0.0781
Bottom 0.0770- 0.0780

Ring side clearance

Top 0.0019- 0.0036
Bottom 0.0020- 0.0040
Oil ring Snug

Ring gap width

Top 0.010- 0.020
Bottom 0.010- 0.020
Oil Ring 0.015- 0.055

Piston Specifications

Code Red 3.6778 – 3.6784
Code Blue 3.6790 – 3.6796
0.003 Oversize 3.6802 – 3.6808
Piston to Cyl. Bore clearance 0.0014 – 0.0020
Piston Pin Bore Dia. 0.9122 – 0.9125

Valve Specifications

Year 1966
Seat angle 45
Face angle 44
Valve spring pressure lbs/inches [email protected]
Valve spring installed height (in) 1 19/32
Stem guide clearance (in) – Intake 0.0008 – 0.0025
Stem guide clearance (in) – Exhaust 0.0010 – 0.0027
Stem Diameter (in) – Intake 0.314
Stem Diameter (in) – Exhaust 0.3102

 

More Stories
1998 Cobra 4.6 V8
1998 Mustang Engine Information & Specs – 281 Modular V8 (4.6 L)