Gearbox symbols
Thread Starter
Junior Member
Joined: Apr 2010
Posts: 33
Likes: 0
From: Sweden
Car: Pontiac Firebird 1987
Engine: 305 4bbl
Gearbox symbols
Here comes a little noob question 
On my gearbox i got the symbols P, R , N ,D ,D ,1 2
One of the Ds got a circle or a thin line around it.
What is this?
Is one of them overdrive or something?
And hoe does this work?

On my gearbox i got the symbols P, R , N ,D ,D ,1 2
One of the Ds got a circle or a thin line around it.
What is this?
Is one of them overdrive or something?
And hoe does this work?
Senior Member
iTrader: (4)
Joined: Oct 2008
Posts: 857
Likes: 5
From: Niles, IL
Car: '91 LS6/T56/9"
Engine: LS6
Transmission: T56
Axle/Gears: Currie 9"/4.11, detroit truetrac
Re: Gearbox symbols
1= 1st gear
2= 2nd gear
D= 3rd gear
(D)= 4th gear (overdrive)
So drive the car in (D) (overdrive) that way you'll save fuel. An overdrive gear simply reduces your engine RMP at higher speeds, thus allowing the engine to not work so hard, and saving fuel. You have a 4-speed overdrive automatic AKA 700R4 transmission.
No question to too dumb to ask so never hesitate.
Senior Member
iTrader: (4)
Joined: Oct 2008
Posts: 857
Likes: 5
From: Niles, IL
Car: '91 LS6/T56/9"
Engine: LS6
Transmission: T56
Axle/Gears: Currie 9"/4.11, detroit truetrac
Re: Gearbox symbols
Also is your handle 'crazyeight' a reference to 'Breaking Bad?' If so I'm the biggest fan of that show!
Thread Starter
Junior Member
Joined: Apr 2010
Posts: 33
Likes: 0
From: Sweden
Car: Pontiac Firebird 1987
Engine: 305 4bbl
Re: Gearbox symbols
Hehehe
Well this is my first car with this kind of automatic gearbox
Had a valiant before but it was not like this at all
Thx for answer
Well this is my first car with this kind of automatic gearbox

Had a valiant before but it was not like this at all
Thx for answer
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