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MVMA Specifications Form
Passenger Car		Car Line     Mustang II     
Model Year     1974    Issued    9-73    Revised (o)      
 Engine Displacement
 
140 CID
(2300 cc)		170.8 CID
(2800 cc)
Engine - Piston Rings
Function
(top to
bottom)		No. 1 oil or comp.Compression
No. 2 oil or comp.Compression
No. 3 oil or comp.Oil Control
Compres-
sion		Description   #1
material, coating#2
etc.		Cast Iron, Molybdenum Coating
Cast Iron, Scraper Groove,
Oxide Coating		Cast Iron, Chrome Plated
Cast Iron, Scraper Groove,
Phosphate Coating
Width(#1 & #2) .0780 - .0770(#1) .07835 - .0778 (#2) .0980 - .0976
Gap(#1 ) .010 - .035 (#2) .010 - .020(#1 & 2) .0150 - .0229
OilDescription   #3
material, coating
etc.  Multi-piece		Two Rails and Spacer-Expander
Rails: Chrome Plated-Spring Steel
Spacer-Extender: (SAE-30201)		Two Rails and Spacer-Expander
Rails: Chrome Plated-Spring Steel
Spacer-Extender: B.S. 1449 (1956): EN42G
Width(.177 - .182 Exp.)(.023 - .025 Rails).150 - .158
Gap.010 - .035 RAILS ONLY.016 - .055 RAILS ONLY
ExpandersPart of Oil Ring Assembly

Engine - Piston Pins
MaterialSAE 5015 Heat TreatedB.S. 970 or EN - 206 (a)
Length3.010 - 3.0402.868 - 2.837
Diameter.9121 - .9119.9457 - .9454
TypeLocked in rod in
piston, floating, etc. 		Locked in Rod
Bushing - In rod or pistonNONE
Bushing Material--
ClearanceIn Piston .0002 - .0004.0003 - .0006
In Rod.0008 - .0017 Press Fit
Direction & amount offset in pistonRight .060Right .032

Engine - Connecting Rods
MaterialForged Steel (SAE-1041-H) I-Beam Section
Weight (oz.)26.5617.88
Length (center to center)5.2031 - 5.20635.142 - 5.139
BearingMaterial & Type Plated Copper - Lead Alloy
on Steel Back-Replaceable Insert		Unplated Copper - Lead Alloy (b)
on Steel Back - Replaceable Insert
Overall Length .790 - .800.649 - .639
Clearance (limits).0008 - .0024.0006 - .0021
End Play.0035 - .0105.004 - .011
(a) But SI. MAX. 0.25%, CR. 0.37% to 0.70%, P & S. Each Max. 0.035 Heat Treated.
(b) M-1596 or GEM-SPEZ-MG-8A1
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