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Sherman's Small Block Hybrid - Big-Inch Mice In Two Distinct Flavors

Inside Joe Sherman Racing's Hybrid 408 Small-Blocks.

By Doug Marion, Photography by Doug Marion

Crankshaft
Manufacturer: SCAT
Material: 4340 Steel
Stroke: 4.0-inch

Connecting Rods
Manufacturer: SCAT
Material: 4340 Steel
Design: H.D. I-Beam Type, Fully Profiled
Cap Bolts: 7/16-inch
Rod Weight: 600 Grams
Length: 6-Inch
Highlights: Stroker Clearanced

Pistons
Manufacturer: CP
Size: 4.030-inch Forged
Piston Weight: 378 grams
Piston Pin: Tool Steel, .090-inch wall, 0.927-inch dia., 2.50-inch long, 78 grams.
Lateral Gas Ports : 10
Compression Height: 1.00
Ring Package: 043-043-3mm

Carburetor
Manufacturer: Barry Grant
Model: King Demon 1095 cfm
Jetting: Primaries & Secondaries: pn 94

Intake Manifold
Manufacturer: Edelbrock
Model: Super Victor pn 2925

Engine Blueprint Data
Deck Height: 0.014-inch
Piston-To-Wall Clearance: 0.005-inch
Piston Ring End Gap:
Top: 0.014-0.015-inch
2nd: 0.018-0.020-inch
Main Bearing Clearance: 0.003-inch
Rod Bearing Clearance: 0.0027-inch
Crankshaft End Play: 0.008-inch
Head Gasket Volume: 6.6 cc
Compression Ratio: 11.50:1

Tuning
Gasoline: Chevron 91 octane
Total Ignition Timing: 35 degrees
Spark Plugs: NGK no. 5672
Gap: 0.045-inch

REWORKED AFR HEAD
"CFM" FLOW NUMBERS
LIFT INTAKE EXHAUST
0.100 77 62
0.200 153 115
0.300 211 184
0.400 259 215
0.500 293 225
0.600 310 230
0.700 316 233

SUPER FLOW DYNO TEST RESULTS
RPM TORQUE HORSEPOWER
4,800 554 506
5,200 564 559
5,600 562 599
6,000 554 632
6,400 537 654
6,800 514 667
7,200 484 663
1 3/4-INCH dyno headers & 3-inch magna flow mufflers


SOURCES
Cometic Gasket
Concord
OH
4-40/-354-0777
cometic.com
Joe Sherman Racing Engines
7-14/-542-0515
www.joeshermanracing.com
Edelbrock
Dept. 5.0
2700 California St.
Torrance
CA  90503
310-781-2222
www.edelbrock.com
MSD Ignition
El Paso
TX
9-15/-857-5200
msdignition.com
Milodon
2250 Agate Ct.
Simi Valley
CA  93065
805-577-5950
www.milodon.net
Air Flow Research
10490 Ilex Avenue, Dept. MMFF
Pacoima
CA  91331
Competition Cams
Memphis
TN
8-00/-999-0853
compcams.com
Barry Grant/Demon
Dept. 5.0
1450 McDonald Rd.
Dahlonega
GA  30533
706-864-8544
>www.barrygrant.com
Jesel Valvetrain
7-32/-901-1800
www.jesel.com
Scat Enterprises
3-10/-370-5501
scatenterprises.com
CP Pistons
Irvine
CA
949-567-9000
www.cppistons.com
By Doug Marion
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