Pontiac Pavement Pounders Shootout - Norwalk Raceway Park Part 3
Owner Bio: Edward Sobczyk
What's so special about Edward's '68 LeMans? "I got it 15 years ago and transformed it from a 14-second car to a low 11-second car with the help of family and friends," he tells HPP. "Working on cars with my dad since I was 10, mainly Pontiacs, has turned into a family auto business that specializes in the repair and maintenance of classic and musclecars." The 19-year veteran racer fondly recalls, "I was told by the tech guy at Milan to slow it down. Low 11s was too fast to go without a rollbar. At that moment, it finally sunk in how quick the car actually had gotten. Of course, the problem is now fixed as it has a bar and seatbelts." Although at 37 years old, Edward has owned plenty of other Pontiacs over the years, he currently has a '68 Grand Prix as a bookend to his LeMans. | STRIP TUNING LOG | | Run | Tuning | Launch RPM | Shift Point | 60-FT | 1/8 E.T./MPH | 1/4 E.T./MPH | | 2 | 38-deg timing | 2,000 | 5,800/6,200 | 1.51 | 7.09/95.19 | 11.26/116.92 | | 3 | Same, jetted up to #88/#94 | 2,000 | 5,800/6,200 | 1.53 | 7.08/96.27 | 11.20/118.21 | | 4 | Same | 2,000 | 5,800 | 1.53 | 7.09/96.16 | 11.22/118.17 | | 5 | Same, jetted up to #89 primaries | 2,000 | 6,200/5,800 | 1.54 | 7.09/96.95 | 11.17/119.80 | | 7 | Same, jetted up to #91 primaries | 2,200 | 6,200/5,800 | 1.53 | 7.06/97.19 | 11.14/119.80 | | BEST PASS CORRECTED | 10.60/125.87 | | Run Notes: 2) Surge on top end, running lean. |
| Strip Specs | | Year/Model: | '68 LeMans | | Race Weight: | 3,620 lbs | | Curb Weight: | 3,445 lbs | | Fuel Level: | 21/43 tank | | Fuel: | Amoco 93/100 mix | | Engine: | '70 455 | | Cubic Inches Before/After: | 455/469 | | Engine Built By: | Straightline Performance | | Power Adder: | None | | Top End | | | Carburetor: | Holley 850 DP modified to flow 1,000 cfm | | Jets, Primary/Secondary: | #84/#86 | | Spacer Plate: | 2-in, open, wood | | Intake Manifold: | Performer RPM | | Fuel Pump: | Mallory electric 140-gph | | Lines: | 11/42-in supply, 11/44-in return | | Regulator: | Mallory, set at 6.5 psi | | Heads: | Edelbrock aluminum | | Head Porting: | Dwayne Welder of Straightline Performance | | Flow Numbers: | 295-cfm intake at 28-in pressure | | Valves: | REV SS 2.11/1.77 | | Bottom End | | | Pistons: | CP, forged, flat-top, 4.215-in | | Rings: | C&A plasma-moly | | Rods: | Oliver forged-steel, 6.800-in length | | Compression Ratio: | 10.8:1 | | Crankshaft: | Eagle cast-steel, stock 4.21-in stroke | | Rotating Assembly Balanced: | Yes | | Camshaft | | | Brand: | Straightline Performance, solid, flat-tappet | | Duration at 0.050: | 256/272-deg | | Duration Advertised: | 288/306-deg | | Lift with Specified Rocker Arms: | 0.600/0.590 | | Lobe Separation Angle: | 112-deg | | Centerline: | 108-deg | | Installed Position: | Straight up | | Rocker Arms: | Dove Engineering roller 1.60:1 | | Ignition | | | Distributor: | MSD Pro-Billet | | Amplifier: | Crane Hi-6 | | Coil: | Crane LX-92 | | Wires: | Magnecor 8.8mm | | Spark Plugs: | AC 41-602 | | Total Timing: | 38-deg | | RPM Total Timing is Reached: | 2,500 rpm | | Exhaust | | | Headers: | Hooker | | Primary: | 2-in | | Collector: | 3.5-in | | Exhaust Pipes: | 3-in | | Mufflers: | Straightline Performance | | Crossover: | Flowmaster 2.5-in H-pipe | | Drivetrain | | | Transmission: | Turbo 350, Alto clutches, Kevlar band-and-sprag assembly | | Converter: | Munsinger, 10-in, 3,600-rpm stall | | Shifter: | Winters | | Rear: | 12-bolt | | Rear Gear Ratio: | 3.73:1 | | Posi: | GM with Eaton internals, built by Warren Gear and Axle | | Axles: | Moser 31-spline | | Chassis and Suspension | | | Brakes F/R: | Stock 9.5-in drum | | Wheels F/R: | Warrior 15x4/15x10 | | Tires F/R: | Goodyear DS-2 / M/T 28.5x10.5x15 slicks | | Tire Pressure F/R: | 35 psi/11 psi | | Suspension Front | | | Springs: | Moroso | | Control Arms: | Stock | | Stabilizer Bar: | Removed | | Shocks: | CE adj, set to 90/10 | | Suspension Rear | | | Springs: | Moroso | | Control Arms Upper: | Southside Machine | | Control Arms Lower: | Metco | | Stabilizer Bar: | 1-in | | Shocks: | CE adj, set to 50/50 | | Chassis Mods: | 6-point rollbar | | The Rest | | | Interior Mods: | Shifter, rollbar, seatbelts, gauges | | Exterior Mods: | Fiberglass scoop bonded to steel hood, GTO nose and trim | | Safety Mods: | 6-point rollbar driveshaft loop, RJS harness | | Paint: | GM White | | Launch Technique: | 2,000 on footbrake, let it go | | Best 11/44-mile ET, MPH Prior to Event: | 11.14 at 119 |
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