1967 Chevelle SS
Engine and Transmission Specifications
454 Chevrolet Big Block + .60 over
4.31” Bore x 4.00” Stroke = 468 CID
All work listed below performed by:
WATSON RUPPEL PERFORMANCE RACING ENGINES
52745 St. Rt. 147
SARAHSVILLE, OH 43779
(740)838-6405
- Installed NEW Eagle 454 4.0” Crank
- Jet cleaned block and stripped
- Checked line bore
- Bored and honed block (0.60)
- Final washed block for assembly
- Installed all oil gally, NEW freeze plugs, and seal
- Installed NEW cam bearings and check fit
- Pin fit NEW pistons (.001)
- Magnafluxed NEW rods
- Checked big ends of rods and check small ends for press fit
- Installed NEW rods on pistons
- Balanced complete assembly
- Changed flywheel to external balance
- Glassbeaded flywheel
- Removed 2 broken bolts and tap all holes
- Refaced flywheel
- Checked all bearing clearances with bearing torqued in block and rod
- Final polished crankcase and check sizes
- Hot tanked oil pan and timing cover
- Cleaned and magnafluxed heads
- Competition valve job
- Opened up heads for 2.19 Intake and 1.88 Exhaust Valves
- Blended bowl area for best flow
- Assembled heads and set up NEW valve springs to NEW match cam
- Milled and CC heads
- Installed and fit to size NEW Comp Cams bronze guideplates
- Cut guides down for clearance to retainer and positive seals
- Installed NEW exhaust seats
- Installed one set of NEW 10o - .050 Crowler Locks
- Installed NEW Comp Cams rotator eliminator spring cups
- Installed all NEW ARP studs
BLOCK
LINE BORE SPECIFICATIONS
Line Bore #1: High 2.9384 Low 2.9382
Line Bore #2: High 2.9385 Low 2.9375
Line Bore #3: High 2.9383 Low 2.9378
Line Bore #4: High 2.9384 Low 2.9379
Line Bore #5: High 2.9384 Low 2.9380
MAIN BEARING SPECIFICATIONS
- 2.7497 = .0021 STD. STD.
- 2.7494 = .0021 STD. STD.
- 2.7493 = .0022 STD. STD.
- 2.7494 = .0022 STD. STD.
- 2.7488 = .0023 STD. STD.
ROD BEARING SPECIFICATIONS
- 2.997 – 2.1991 = .0022 - .0028
STD. STD.
- 2.997 – 2.1991 = .0022 - .0028
STD. STD.
- 2.997 – 2.1991 = .0022 - .0028
STD. STD.
- 2.997 – 2.1991 = .0022 - .0028
STD. STD.
- 2.997 – 2.1991 = .0022 - .0028
STD. STD.
- 2.997 – 2.1991 = .0022 - .0028
STD. STD.
- 2.997 – 2.1991 = .0022 - .0028
STD. STD.
- 2.997 – 2.1991 = .0022 - .0028
STD. STD.
CRANK SPECIFICATIONS
NEW Eagle 4.0” 454 Crank
HEAD SPECIFICATIONS
GM
Big Block Oval Port PN# 386781
Combustion chambers poured before mill work
Milled Heads .010 - .015
Approximate volume after mill – 114.6 CC
PISTON SPECIFICATIONS
NEW Speed Pro Power Forged Pistons
Bore (in): 4.310
Bore (mm): 109.474
Material: Forged Aluminum
Piston Style: Dome
Compression Distance (in): 1.640 in.
Dome Height (in): 0.215
Piston Head Volume (cc): -24.30
Valve Reliefs: Single
Wrist Pin Style: Press fit
Pin Diameter (in): 0.989
Top Ring Thickness: 5/64 in.
Second Ring Thickness: 5/64 in.
Oil Ring Thickness: 3/16 in.
Balanced to the following weights:
Piston: 694 grams
Piston Pin: 175 grams
Piston Rings: 63 grams
Total Rod: 598/242 grams
Insert: 51 grams
Rotary 1313 grams
Reciprocating 1174% factor
Bob Weight: 2487 grams
S.E. = .0011 - .0017 Press Fit
B.E. = 2.3250 – 2.3275 (Big at P.L.)
VALVE SPECIFICATIONS
NEW Manley Valves
Valve sizes – Intake 2.19, Exhaust 1.88
Guide Clearance – Intake .0016, Exhaust .0017
SPRING SPECIFICATIONS
NEW Springs
120# @ 1.890
310# @ 1.312
Lift - .578 Hyd.
Clear - .080
C.B. – 1.100
= 1.758
CAMSHAFT SPECIFICATIONS
NEW Comp Cams XTREME Energy
XE284H-10
Gross Valve Lift Intake: .574
Gross Valve Lift Exhaust: .578
Duration @ .006 Tappet Lift Intake: 284
Duration @ .006 Tappet Lift Exhaust: 296
Valve Timing @ .006 Intake Open: 36 BTDC
Valve Timing @ .006 Intake Close: 68 ABDC
Valve Timing @ .006 Exhaust Open: 82 BBDC
Valve Timing @ .006 Exhaust Close: 34 ATDC
These specs are for cam installed @ 106 Intake center line
Duration @ .050 Intake: 240
Duration @ .050 Exhaust: 246
Lobe Lift Intake: .3390
Lobe Lift Exhaust: .3410
Lobe Separation: 110.0
INTAKE SPECIFICATIONS
NEW Edelbrock Performer RPM Air Gap Manifold
Engine Block Style: Stock / OEM Standard Deck
Carburetor Quantity: Single
Intake Style: Dual Plane
Basic
Operating RPM Range: 1,500 – 6,500 RPM
Intake Finish: Natural
Intake Material: Aluminum
EGR: No
DISTRIBUTOR SPECIFICATIONS
NEW MSD Pro-Billet Ready to Run Distributor
Trigger Style: Magnetic
Advance Type: Vacuum and Mechanical
Cap
Style: Male/HEI
Tach Drive: No
Slip Collar: No
Gear Material: Iron
Computer Controlled Compatible: No
Ignition Box Required: No
Distributor Rotation: Clockwise
Helix Rotation: Standard
Distributor Cap Color: Red
Housing
Material: Billet Aluminum
Housing Finish: Natural
CARBURETOR SPECIFICATIONS
NEW Speed Demon 850 cfm Demon Carburetor
Billet baseplate with Idle-Eaze
Billet Metering Blocks
Four Corner Idle Circuitry
Large Capacity Float Bowls
Large Glass Float – Level Site Windows
Power Valve Backfire Protection
Integral High Flow Choke Tower Housing
Mechanical Secondaries
Quick Release non-stick gaskets
Vacuum Fittings
HEADER SPECIFICATIONS
NEW Hooker Competition Ceramic Coated Headers
Header Material: Steel
Header Finish: Ceramic Coated
Header Style: Full Length
Primary Tube Diameter (in): 2 in.
Collector Diameter (in): 3.5 in.
Tuned: No
Primary Tube Gauge: 16 Gauge
Collector Attachment: 3 Bolt Flange
Cylinder Head Port Shape: Round
Flange Style: Standard
Flange Thickness (in): 5/16 in.
EXHAUST SPECIFICATIONS
NEW Sweet Thunder 3” Chambered Exhaust
Dual 30” Length 3”Diameter Aluminized Steel Chambered Mufflers
Polished 304 Stainless Steel Slash Cut Side Exit Tips
Custom Installation to Exit Before Rear Wheels
TRANSMISSION SPECIFICATIONS
NEW Richmond Six Speed ROD Transmission
Number of Gears: 6
Input Shaft Diameter (in): 1.125 in.
Output Shaft Spline Diameter (in): 1.375 in.
Tailshaft Length (in): 7.5 in
Yoke Style: Slip On
First Gear Ratio: 3.27:1
Second Gear Ratio: 2.22:1
Third Gear Ratio: 1.57:1
Forth Gear Ratio: 1.23:1
Fifth Gear Ratio: 1.00:1
Sixth Gear Ratio: 0.76:1
Case Material: Aluminum
