Block |
1970 455 YH |
Block Specs |
+ 0.030" over bore; hard block to freeze plugs; Pro-Gram Engineering 4 bolt main caps with ARP studs and bolts. Note: bored and honed to piston manufacturers specs, using torque plate. |
Bore/stroke |
4.181"x 4.210" 462 cid |
Heads |
Edelbrock #6056 90cc chamber volume (9.7 to 1 static compression); T&D shaft roller rocker system, 1.6 ratio on both valves; ARP head studs & bolts; Felpro 1016 head gasket and 1436 exhaust gasket. Port matched to Specialty Component Engineering intake gasket, 1.175" x 2.320" |
Head Flow Nos. on SF 600 Bench, 28" of water |
.100":83/82
.200":151/145
.300":220/195
.400":270/230
.500":301/248
.600":313/255 |
Valves |
Ferrea 6000 series SS intake:2.15", exhaust:1.77"
Lunati H-11 dual valve springs, 1.52" diameter; springs are PolyDyn performance coated |
Crankshaft |
1970 455 "N", 0.010/0.010 |
Rods |
Carillo 6.625" Forged Steel |
Pistons |
JE forged aluminum |
Rings |
JE ring package with Total Seal top ring. |
Deck height |
+.001 (nominal); Pistons extend .0007 to .0011 above the deck. |
Bearings |
Federal Mogul 3/4 groove mains and Clevite 77 on rods; both Calico CT-1 coated. |
Timing gear |
Rollmaster billet roller 9 key |
Harmonic Damper |
BHJ (SFI approved) |
Cooling |
Meziere Electric (35 gph) |
Camshaft |
Comp Cams Xtreme Energy Street Roller #P4876B/4876B SR108, 254/254 @ 0.050", .389/.389 lobe lift, .622" gross lift with 1.6 rockers, set at 104 degree intake centerline; 108 lobe separation angle |
Pushrods |
Manton 9.150" length, 5/16" diameter x 0.83" wall, 4140 chromoly steel |
Lifters |
Crower solid roller lifter with optional high pressure pin oiler |
Carburetor/
intake |
Holley 4150 HP950; Edelbrock RPM with plenum divider cut 1"; port matched to heads |
Oiling System |
Canton 6 quart road race pan; Sealed Power 60lb. oil pump; Fram HP2 racing filter, Mobil-1 10w30 synthetic oil. |
Ignition |
MSD system 7AL-3 box; Pro-Billet distributor; HVC coil and crank trigger; Taylor spark plug wires; NGK V-groove plugs |
Emissions |
NA |
Exhaust |
Headman headers 2" tube diameter, 10.5" collectors; 3.5" into 3" Dr. Gas X Crossover; full length 3" exhaust running gases through Dynomax 17792 mufflers. |
Suspension/
brakes |
Edelbrock IAS shocks on front and rear and front sway bar in place; Landrum 300 lb./ in. leaf springs with Cal Tracs traction bars, Moog 6-cylinder front coiled springs; Wilwood front and rear disc brakes |
Fuel |
Unleaded premium |
Weight |
3750 pounds |
Tires/Rims |
Front: FirestoneFirehawk SS20 P215/65R15
Rear: 275-60R15 Nitto NT-555R drag radial for street; 28x 12.50 M/T ET Street DOT tires at the strip
Rims: American Torque Thrust |
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Driveline features |
TCI, internally balanced flex plate (SFI approved); 10" Continental torque converter for the street (8 inch A-1 4200 stall converter for the strip); TH400 transmission with manual valve body; Earl's Performance 19-row transmission cooler; GM 12 bolt with Moser axles, C-clip eliminator; Auburn limited slip with 3.73 to 1 gearing; T/A rear end girdle |