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auto gearbox & shifter info
Posted: Sun Jan 25, 09 10:33 pm
by the dodge
being new to an auto gearbox can anybody explain (with pics if pos) the difference between a reverse pattern gearbox/shifter and a "standard" type is there difference in the gearbox if so what? also what is the advantage of having a reverse pattern shifter?
cheers
Posted: Sun Jan 25, 09 11:10 pm
by Anonymous
A reverse pattern is used mostly on the strip , simply put....
P.R.N.D.2.1. becomes P.R.N.1.2.3. , just in case you cock up on the shift & go from 2nd into neutral
, don't like to use a reverse pattern on the street (no kickdown) but a lot of guys on here do.
Sure the tranny boys will give you a more detailed discription.
Posted: Sun Jan 25, 09 11:35 pm
by Dave-R
Reverse pattern are always manual valve body. Manual valve body means no "Drive" function. You have to shift each gear manually. They are also safer to do burnouts in. i.e. prevent the gearbox exploding due to a failer of the overrunning clutch.
Posted: Sun Jan 25, 09 11:40 pm
by Anonymous
..............................just DON'T burnout in 1st gear , reverse pattern or otherwise
Posted: Mon Jan 26, 09 11:02 am
by Blue
It's all done in the valve body, swap the auto valve body out, bolt the reverse pattern manual valve body in, job done.
Posted: Mon Jan 26, 09 12:02 pm
by Pete
...but you also should change your shifter plate.
Many aftermarket shifters come with changeable gate plates for various shift patterns
Posted: Mon Jan 26, 09 12:08 pm
by morgan
Brutus wrote:..............................just DON'T burnout in 1st gear , reverse pattern or otherwise
?
Posted: Mon Jan 26, 09 12:34 pm
by Pete
Puts too much load on the sprag (one way clutch)
Posted: Mon Jan 26, 09 12:54 pm
by Anonymous
So does that mean you start your burnout in 2nd, or start in first and then shift quickly into second???
Posted: Mon Jan 26, 09 1:21 pm
by Pete
Start in 2nd.......................................
If you have enough power
Posted: Mon Jan 26, 09 1:27 pm
by morgan
So how do you stop it kicking down into 1st then ? Or do you have to get so much speed that 1st is impossible ?
I learn something new everyday on this board. !
Posted: Mon Jan 26, 09 1:37 pm
by Pete
On a manual valve body of any pattern there is no kick down facility - it is disabled in the valve body.
It is best to come to a halt, then select first to pull away. Matching road speeds to engine speeds is quite critical. They are quite unforgiving if you shift down at the wrong time
Posted: Mon Jan 26, 09 1:52 pm
by Dave-R
Posted: Mon Jan 26, 09 8:24 pm
by the dodge
cheers for the info,
good stuff on the a for a bodies site