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"We know all
about our depleting fossil fuels and the essential changeability of life,
but when these cars are gone, we'll miss them."
-Kevin Smith, Motor Trend, July 1984
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|
1986 Pontiac Firebird Trans Am Factory Specifications |
|
Engine |
Data |
| Type: | Liquid cooled, C-P-C-built 90-degree V8. |
| Engine block | Cast iron |
| Cylinder heads | Cast iron |
| Intake manifold | Aluminum |
| Intake runners | Aluminum |
| Displacement: | 305cid (5.0 liter, 5001cc) |
| Bore and Stroke: | 3.74 x 3.48 inch |
| RPO Engine Designation | LB9 |
VIN / Engine Code: |
F |
| Compression Ratio: | 9.5:1 |
| Valvetrain | In-head valve, pushrod, hydraulic lifters, fast burn combustion chambers |
| Firing Order: | 1-8-4-3-6-5-7-2 |
| Recommended fuel: | 87 octane, unleaded fuel only |
| Maximum recommended engine speed: | 5700 rpm |
| Emissions Controls | 3-way catalytic converter, feedback fuel-air-ratio control, EGR, auxiliary air pump |
| Exhaust System | Cast iron 4 into 1 style exhaust manifold with single pipe from each cylinder bank, Y-pipe leading to single catalytic converter, single pipe leading to single muffler with rear exhaust exits |
| Total dressed engine weight: | 656.7 lbs |
Induction: |
Bosch designed, normally aspirated, multi-port fuel injection, electronic spark control, aluminum tuned-runners, aluminum intake manifold and aluminum intake box plenum. 48mm aluminum throttle body, flow rate of 700 CFM. Bosch Mass Air Flow (MAF) sensor, approximately 520 CFM flow rate. |
| Intake Air Flow Control | Sealed air box with disposable paper filter element, approximately 500 CFM flow rate. |
| Fuel Injectors: | Eight plus one (one injector per cylinder plus one cold start injector mounted in aluminum fuel rail assembly) |
| Injector Flow Rate: | 19 pounds per hour |
| Fuel Line Pressure | 43.5 PSI |
| Camshaft: | Hydraulic |
| Lift Intake / Exhaust | .350 / .385 |
| Duration Intake / Exhaust | 178 / 194 |
|
Lobe Separation Intake / Exhasut |
109.0 (106/-112) |
| Lifters | Hydraulic |
Horsepower: |
205 bhp @ 4400rpm (factory and PMD media rating) |
Torque: |
270 ft-lbs @ 3200rpm |
Thermostat Temp: |
195.F (91.C) |
Cooling System: |
16.9 quarts |
Oiling System: |
5.0 quarts |
Fuel System: |
Electric fuel pump, tank mounted, in-line fuel filter, canister type. Constant pressure with fuel return line system. |
| Fuel Capacity: | 15.9 gallons |
| Accessory Belt Drive: | Multiple V-belt |
|
Electronics |
|
| ECM Model | 1227165 |
| ECM Family | P4 series |
| Pipeline Data Burst Rate to ALDL | 8192 baud |
| Data Storage Format | Removable EPROM (Programmable Read Only Memory) chip - 128K |
General |
|
Model: |
Rear wheel drive sport coupe, two door + hatchback |
| Type: | Unit body construction, twin subframe |
| Body Material | Welded steel stampings |
Designation: |
F-body series |
Wheelbase: |
101.0 inches |
| Track, F/R | 60.7 / 61.6 inches |
Length: |
191.6 inches |
Width: |
72.4 inches |
Height: |
49.7 inches |
| Frontal Area | 19.3 sq ft |
| Ground Clearance | 4.5 inches |
Weight: |
3408 lbs |
| Trunk | 10.3 / 31.0 cubic feet with rear seat up / down. |
| Weight Distribution F/ R: | 57 / 43 percent |
|
Interior |
|
| SAE volume, front seat | 53 cubic feet |
| SAE volume, rear seat | 32 cubic feet |
| SAE volume, trunk space | 12 cubic feet |
| Headroom, F / R | 37.0 / 34.6 inches |
| Legroom, F / R | 43.0 / 28.8 inches |
| Shoulder room, F/ R | 57.7 / 56.3 inches |
| Hip room, F / R | 56.3 / 42.8 inches |
| Cargo index volume w/ rear seat up (liters/cu ft.) | 292 / 10.3 |
| Cargo index volume w/ rear seat down (liters/cu ft.) | 879 / 31.0 |
Suspension |
|
| Type: | WS6 Performance Package optioned |
| Steering: | Power assisted, recirculating ball, quick ratio, 14:1 |
| Turns lock-to-lock | 2.4 |
| Turning circle curb-to-curb | 39.0 feet |
Front: |
Fully independent with modified McPherson strut, coil springs with lower A-arm, low-friction ball-bearing upper strut mount. |
Rear: |
Live axle with coil springs, gas charged shocks, longitudinal lower control arms, torque arm and transverse track bar. |
Brakes-Front: |
Disc, power assisted, vented, 10.5" |
Brakes-Rear: |
Disc, power assisted, vented, 10.5" |
| Power Assist | Vacuum |
| Wheels: | 16" x 8.0" cast aluminum alloy, "Deep Dish" Hi-Tech Turbo |
| Tire Type and Brand: | Goodyear Eagle "Gatorback" VR50, steel-belted black walls |
| Size: | P245/50VR16 |
| Front Swaybar: | 36mm diameter |
| Rear Swaybar: | 24mm diameter |
Transmission |
|
| Type: | TurboHydramatic 700R4 4 speed automatic overdrive |
| Fluid Capacity | 9.9 pints |
|
Transmission Gear Ratios |
|
| 1st | 3.06:1 |
| 2nd | 1.63:1 |
| 3rd | 1.00:1 |
| 4th | 0.70:1 (overdrive) |
_________________________________________________________________________________
"It snakes around bends and cruises
through traffic with restrained malevolence."
-Kevin Smith, Motor Trend,
July 1984
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|
Rear End |
|
| Differential: | (Australian built) 9 bolt Borg Warner heavy duty with limited slip |
| Ring Gear size: | 7.75 inch |
| Ring and Pinion Ratio: | 3.27:1 |
_________________________________________________________________________________
"... the ultra-strong Australian 7
3/4 rearend. The word is that the rearend is stronger than a Dana 44."
-Jeff Smith, "Test Flight", Car
Craft, 1985
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PERFORMANCE
RESULTS
________________
|
Tested with optional LB9 5.0 liter TPI engine, 700R4 transmission, 3.27 rear gear ratio and WS6 special performance suspension and handling package* |
|
|
|
|
| Standing Start Quarter Mile | 16.23 seconds @ 87mph |
| 0-60 MPH | 8.2 seconds |
| Top Speed | 138.9 mph** |
| Skidpad | .87g |
| Braking, 60mph to 0mph | 147 feet |
| Coefficient of Drag (Cd) | .303 |
*Courtesy of
HOT ROD magazine, "Different Strokes" article,
August 1986 issue
** Depending on which magazine tested these cars
(and what conditions were present), top speed varied from 135mph to 140 plus
mph.
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"The four-wheel disc brake-refined
F-body platform equipped with the optional WS6 performance suspension package
(16-inch wheels, unidirectional tires, gas shocks, and heavier bars) yields a
well-mannered road car that doesn't really know it's not a race car. The
Trans Am's steering remains virtually neutral right up to the limit of its .87
grip on the road. It turns in either direction with equal competence and
accomplishes the transition without even the slightest hint of distress.
It's more forgiving of driving errors and, in terms of driving ability, the
average hot rodder will probably feel even more comfortable in the Trans Am than
he would in a Corvette."
-John Baechtel, "Different Strokes",
Hot Rod, July 1986
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