auto gearbox & shifter info

the dodge · Post by **the dodge** » Sun Jan 25, 09 10:33 pm

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

Anonymous · Post by **Anonymous** » Sun Jan 25, 09 11:10 pm

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.

Dave-R · Post by **Dave-R** » Sun Jan 25, 09 11:35 pm

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.

Anonymous · Post by **Anonymous** » Sun Jan 25, 09 11:40 pm

..............................just DON'T burnout in 1st gear , reverse pattern or otherwise

Blue · Post by **Blue** » Mon Jan 26, 09 11:02 am

It's all done in the valve body, swap the auto valve body out, bolt the reverse pattern manual valve body in, job done.

Pete · Post by **Pete** » Mon Jan 26, 09 12:02 pm

...but you also should change your shifter plate.

Many aftermarket shifters come with changeable gate plates for various shift patterns

morgan · Post by **morgan** » Mon Jan 26, 09 12:08 pm

Brutus wrote:..............................just DON'T burnout in 1st gear , reverse pattern or otherwise

?

Pete · Post by **Pete** » Mon Jan 26, 09 12:34 pm

Puts too much load on the sprag (one way clutch)

Anonymous · Post by **Anonymous** » Mon Jan 26, 09 12:54 pm

So does that mean you start your burnout in 2nd, or start in first and then shift quickly into second???

Pete · Post by **Pete** » Mon Jan 26, 09 1:21 pm

Start in 2nd.......................................

If you have enough power

morgan · Post by **morgan** » Mon Jan 26, 09 1:27 pm

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. !

Pete · Post by **Pete** » Mon Jan 26, 09 1:37 pm

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

Dave-R · Post by **Dave-R** » Mon Jan 26, 09 1:52 pm

http://www.forabodiesonly.com/mopar/sho ... php?t=2167

the dodge · Post by **the dodge** » Mon Jan 26, 09 8:24 pm

cheers for the info,
good stuff on the a for a bodies site