| Type | V 90º | |
|---|---|---|
| Valve Arrangement | 53º Lateral in Head | |
| Bore | 3 13/16" |
|
| Stroke | 3 5/8" |
|
| Piston Displacement | 331.1 cu. in. |
|
| Compression Ratio | 7.5 - 8.5 to 1 | |
| Max HP | 180-250 | |
| Firing order | 1-8-4-3-6-5-7-2 | |
| Cylinder Numbering | Left Bank 1-3-5-7 Right Bank 2-4-6-8 |
| Width | 32 1/8" | |
|---|---|---|
| Height ( oil pan to air cleaner ) | 36 1/2" | |
| Length ( trans mounting surface to fan ) | 36 3/4" |
| Type | Fully Counterbalanced | |
|---|---|---|
| Bearings | Steel Backed Babbit | |
| Journal Diameter | 2.4995" to 2.5005" | |
| Crank Pin Diameter | 2.249" to 2.250" | |
| Maximum out of Round | .001" | |
| Number Of Main Bearings | 5 | |
| Bearing Clearance | .0005" to .0015" | |
| End Play | .002" to .007" | |
| Thrust Taken By | #3 | |
| Main Bearing Interchangeability | Upper and Lower #'s 1,2,4 Upper and Lower # 3 #5 is NOT Interchangeable | |
| Main Bearing Diameter and Length | #1- 2.5" x .875" #2- 2.5" x .875" #3- 2.5" x .870" #4- 2.5" x .875" #5- 2.5" x 1.595" |
| Diameter | 2.4995" to 2.5005" | |
|---|---|---|
| Maximum Out of Round | .001" | |
| Center Bearing Run-Out | .002" |
| Diameter | 2.249" to 2.250" | |
|---|---|---|
| Length | 1 7/8" | |
| Maximum Out of Round | .001" |
| Type | Drop Forged I Beam | |
|---|---|---|
| Length | 6 5/8" | |
| Weight | 25.2 oz. | |
| Bearings | Steel Backed Babbitt | |
| Diameter and Length | 2 1/4" x 29/32" | |
| Bearing Clearance | .0005" to .0015" | |
| Maximum Allowable Bearing Clearance | .0025" | |
| Side Clearance | .006" to .014" |
| Type | Steel Backed Bronze | |
|---|---|---|
| Diameter and Length | 59/64" x 1 3/16" | |
| Clearance | .0001" to .0004" |
| Drive | Chain | |
|---|---|---|
| Bearings | Steel-Backed Babbitt | |
| Number | 5 | |
| Bearing Clearance | .001" to .003" | |
| Maximum Allowable Bearing Clearance | .005" | |
| End Play | .002" to .006" | |
| Maximum Allowable End Play | .010" | |
| Lift - Intake | .378" | |
| Lift - Exhaust | .361" |
| No. 1 | 1.998" to 1.999" x 15/16" | |
|---|---|---|
| No. 2, 3, 4 | 1.998" to 1.999" x 23/32" | |
| No. 5 | 1.4355" to 1.4365" x 29/32" |
| Standard Performance High Performance | Hydraulic Solid | |
|---|---|---|
| Clearence in Block | .0005" to .0015" | |
| Diameter | .9040" to .9045" | |
| Clearence | Dry .060" to .210" |
| Type | Horizontal Slot with Steel Strut | |
|---|---|---|
| Material | Aluminum Alloy Tin Coated | |
| Clearance in Block | .022" | |
| Clearance at Skirt | .0005" to .0015" | |
| Weight | 20.8 oz. | |
| Length | 3 7/8" |
| Type | Full Floating | |
|---|---|---|
| Diameter and Length | 63/64" x 3 9/64" | |
| Clearance in Piston | .0000" to .0005" | |
| End Play | .004" to .026" | |
| Clearance in Rod | .0001" to .0004" | |
| Offset | Right Side |
| Number | 3 | |
|---|---|---|
| Compression Rings | 2 | |
| Oil Rings | 1 | |
| Width of Rings | Compression 5/64" Oil 3/16" | |
| Gap | .010" to .020" | |
| Side Clearance | Compression .0020" to .0035" Upper .0010" to .0025" Intermediate .0010" to .0025" Oil .0010" to .003" |
| Material | Silicon-Chromium Steel | ||
|---|---|---|---|
| Head Diameter | 1 13/16" | ||
| Length | 5.0" | ||
| Stem Diameter | .372" to .373" | ||
| Stem Clearance | .001" to .003" | ||
| Maximum Clearance | .004" | ||
| Top of Guide to Block | 1.0" | ||
| Angle of Seat | 45º |
| Material | Silicon-Chromium Steel | |
|---|---|---|
| Head Diameter | 1 1/2" | |
| Length | 4 29/32" | |
| Stem Diameter | .371" to .372" | |
| Stem Clearance | .002" to .004" | |
| Maximum Clearance | .006" | |
| Top Face of Guide to Block | 1 7/32" | |
| Angle of Seat | 45º |
| Length | 2" | |
|---|---|---|
| Load (valve closed) | 1 11/16" - 46 to 51 lb. | |
| Load (valve open) | 1 5/16" - 124 to 132 lb. | |
| Inside Diameter | .990" to 1.010" |
| Length | 1 7/8" | |
|---|---|---|
| Load(valve closed) | 1 9/16" - 12 to 14 lb. | |
| Load(valve open) | 1 3/16" - 35 to 40 lb. | |
| Inside Diameter | .690" to .710" | |
| Installed Height (seat to retainer) | 1 5/8" to 1 11/16" |
| Combustion Chamber | Hemispherical | |
|---|---|---|
| Valve Seat Run-out (maximum) | .002" | |
| Valve Seat Out of Round | .0005" | |
| Intake Valve Seat Angle | 45º to 45 1/2º | |
| Seat Width | .060" to .085" | |
| Exhaust Valve Seat Angle | 45º to 45 1/2º | |
| Seat Width | .040" to .060" | |
| Cylinder Head Gasket (thickness) | .020" |
| Pump Type | Rotary, Full Pressure | |
|---|---|---|
| Capacity (qt.) | 5 + 1 for filter | |
| Pump Drive | Camshaft | |
| Operating Pressure at40 to 50 MPH | 40 to 65 lbs. |