By the Numbers

Baseline
RPM HP
4,200 325
RPM LB-FT
3,300 439
TFS top end
RPM HP
5,600 410
RPM LB-FT
3,700 471

Short-block

Displacement 406ci
Bore x stroke 4.155 x 3.75
Rods 5.56 inches
Crank factory cast 400
Pistons forged, -20cc dish
Balanced assembly
Ignition GM HEI

Parts Swapped

Baseline
Heads cast-iron
Intake aluminum dual plane
Carb owner-modified Q-jet
Camshaft hydraulic flat-tappet
Rockers stamped steel, roller tip, 1.5:1

Cam Specs

Type hydraulic flat tappet
Duration 228/234 at 0.050
Lift 0.480/0.494 at 0.050
LSA 110

Dyno Info

Baseline TFS Top End Swap
40 degrees total timing 36 degrees total timing
91 octane 91 octane

Parts List

Description PN

Trick Flow

Top end kit TFS-K314-420-395
Camshaft TFS-31401001
Trick Flow Super 23 195 62cc chamber TFS-30400002
Aluminum, full roller, 1.5 ratio rockers TFS-31400510
Hydraulic flat tappet lifters TFS-21400001
Gasket set TFS-31400915
5/16-inch chromoly pushrods TFS-21407850
True, double roller timing chain, billet steel sprockets TFS-31478500
Cylinder head bolts TFS-92000
Valve covers TFS-44000

Quick Fuel Technology

750 cfm SS-750

Weiand

Speed Warrior intake manifold 8150

SOURCE
Trick Flow Specialties
1248 Southeast Avenue
Tallmadge
OH  44278
330-630-1555
www.trickflow.com
The Carb Shop
Ontario
CA
909-947-3575
http://www.customcarbs.com
Quick Fuel Technology
129 Dishman Lane
Bowling Green
KY  42101
270-793-0900
www.quickfueltechnology.com
Weiand Performance Intakes
http://www.holley.com/Index.asp?
division=Weiand
Summit Racing
Akron
OH
800-230-3030
330-630-0240
www.summitracing.com/