Aaron Koehler

i have a 305 82 trans am.. new heads on it.. was wondering what i should expect for 1/4 mile times..

midias

With the lack of information given best guess would be somewhere between 15-20 sec

Aaron Koehler

imagine a 1982 firebird trans am rolling off the line and driving right to the track..

TTOP350

iTrader: (8)

Just guessing and playing with Wallace racing I came up w these 2 .

Wallace Racing - ET/MPH/HP Calculator
Weight is as the car sits on the line: driver and gas in it.
The answers below will be for at sea level and standard pressure/temperature.
(no weather correction).

Calculate ET and MPH from HP and Weight
Weight HP

Your ET / MPH computed from your vehicle weight of 3300 pounds and HP of 165 is 15.81 seconds and MPH of 85.48 MPH.

Wallace Racing - ET/MPH/HP Calculator
Weight is as the car sits on the line: driver and gas in it.
The answers below will be for at sea level and standard pressure/temperature.
(no weather correction).

Calculate ET and MPH from HP and Weight
Weight HP

Your ET / MPH computed from your vehicle weight of 3300 pounds and HP of 150 is 16.32 seconds and MPH of 82.81 MPH.

midias

Both the LU5 and the LG4 would run about just under and over 17 sec respectively. The LU5 had a couple gear options but they did not make a huge difference. Articles from various places can be found on google by typing in 82 trans am 1/4

"The Trans Am had two engine choices for 1982; GM’s LG4 V8 which was a small-block Chevy 5.0 liter (305 CID) 4 bbl. V8 rated at 145 horsepower and 245 lbs/ft of torque. This engine was smooth and moved the light Trans Am well, however a tire burner it was not. Performance was good for its era with 0-60 mph times at around 10 seconds and a quarter-mile time in the 17 second range. The LG4 came standard with GM’s TH200C 3-speed automatic transmission

The stock LU5 to its credit produced 8 horsepower more than the best Ford had to offer with the 1982 Mustang GT. Motor Trend magazine (January 1982) test drove a LU5 equipped Trans Am and achieved a 0-60 mph time of 8.89 seconds and a quarter mile time of 16.75 seconds. "

dmccain

iTrader: (2)

My 82 Z28 with the Crossfire engine turned a high 16 or lower 17 if I remember correctly. Auto, 3.23 gears, TH200c tranny. Should be pretty close to what you should do.

GhostRanger

You need to give us a lot more info. I run an 82 sport coupe with a mild built 350 sbc and a TH350. For most of the year I was running 15.3-15.2 times in the quarter till I made some drastic changes,and I am at 4,260 foot altitude.