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Pontiac Pavement Pounders Shootout - Mid-Michigan Motorplex Part III

1968 Firebird 350 Ho Side View
1968 Firebird Engine Top View Jody Traylor Front View
STRIP TUNING LOG
Run/TuningLaunch RPMShift Pt. 60-ft.1/8-mile1/4-mile
1. 38-deg total timingIdle5,1002.008.97/78.4914.01/97.74
2. Same Idle5,3002.039.00/78.2414.03/97.79
3. SameIdle5,4002.039.02/78.3414.08/97.06
4. SameIdle5,5002.029.00/77.8814.05/97.27
5. Richen via metering
rod change from BP to CC
Idle5,4002.038.90/78.8113.93/97.76
BEST PASS CORRECTED
13.68/99.56

STRIP SPECS
Year/Model'68 Firebird 350 H.O. convertible
Race Weight with Driver3,904 lbs
Curb Weight3,664 lbs
Fuel Level When Last Weighed3/4 tank
FuelHalf 110-octane/half 93-octane
Engine350 H.O., code YM
Cubic Inches Before/After354/359
Engine Built ByDynamic Speed & Marine

Induction System
Air CleanerStock
CarburetorStock 750-cfm Q-jet
Primary Jets0.071
Primary Metering Rods0.043
Secondary Metering RodsBE
Secondary Metering Rod HangerP
Intake ManifoldStock cast-iron dual-plane

Fuel System
PumpStock mechanical
Lines3/8-in

Casting No.'68 No. 18
Flow NumbersN/A
ValvesStock 1.96/1.66-in

Bottom End
PistonsSilvolite cast flat-top, 0.030-over
RingsSealed Power
RodsStock cast 6.625-in
Compression Ratio10.61:1
CrankshaftStock
Rotating Assembly BalancedYes

Camshaft
BrandJW Racing Cams 066, hydraulic
Duration at 0.050, Intake/Exhaust200/210-deg
Duration Advertised273/282-deg
Lift with Specified Rocker Arms, Intake/Exhaust0.413/0.417
Lobe Separation Angle112-deg
Installed PositionStraight up
Rocker ArmsStock 1.50 stamped steel

Ignition
DistributorStock Delco points-type
AmplifierNone
CoilStock
WiresStock
Spark PlugsA/C R45S
Total Timing38-deg
Rpm That Total Timing Is Reached2,400

Exhaust
ManifoldsCast-iron log
Exhaust Pipes2.5-in Pypes, mandrel-bent
MufflerCrossflow
CrossoverPypes 2.5-in X-type

Drivetrain
TransmissionTurbo 350 (Not legal to PS rules, as it would
have to be a two-speed. However, the car is
retired from PS competition and is run for fun.)
ConverterStock Turbo 350
ShifterStock
RearPontiac 10-bolt Safe-T-Track
Rear Gear Ratio3.55:1
PosiEaton

Chassis and Suspension
Brakes F/RStock 9.5-in power drum
Wheels F/R14x6 Pontiac steel with poverty caps
Tires F/RF70-14 Goodyear Polyglas
Tire Pressure F/R40 psi/40 psi

Suspension Front
SpringsStock coil
Control ArmsStock
Stabilizer BarStock
ShocksReplacement

Suspension Rear
SpringsStock leafs, clamped
Stabilizer BarNone
ShocksReplacement
Chassis ModsNone

The Rest
Interior ModsNone
Safety ModsFactory convertible x-brace, acts as a driveshaft loop
PaintSolar Red, white top and interior
Launch TechniqueOff idle, pedal to the carpet for shootout
Best 1/8-mile ET, MPH Prior to Event9.115/78.48
Best 1/4-mile ET, MPH Prior to Event14.116/98.3


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1968 Firebird 350 Ho Front View 1964 Gto Front View
1970 Gto Judge Front View 1970 Gto Judge Side View

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