David Stamm

What's invloved, the cost and what are the pro's and con's to regear?

face-ache

Lots of threads on that. only con is the cost! around 6k

targagr

ive only heard of pros for regearing and yes only cost is the con...acceleration is a big pro but how much does it improve acceleration lets say at 1/4mile? is it worth it for street driving or do you feel the acceleration improvement only on a track??

Steve Weiner-Rennsport Systems

Hi David,

The costs vary by which gears you wish to change and what year your car is ('96-'98 cars have fixed second gears and require mainshaft replacement to lower 2nd gear). The final parts list varies by which parts may be needed to rebuild the gearbox such as syncros, operating sleeves, anchor blocks, etc.

Another variable is the LSD and whether you wish to simply install new plates or replace it with something much better,...

The "pros" are much increased acceleration and the "cons" are a a slightly reduced top speed (171 to 155-160 MPH) and the hit to the wallet, naturally,..

It makes a huge difference if its done right.

J.PELLEGRINO

David, We do this upgrade whenever possible, the benefits are that substantial. We do not usually change 2nd gear, but instead focus on gears 3-6. This has proven to be where most drivers garner the best bang for the buck, and as Steve points out, it can be a very big BANG..

Be well and good luck, Jerry

Martin S.

"invest", actually I have heard the cost can be higher, but maybe that just for me. Everybody else pays $6,000.

I have driven a 96 993 on the track and the streets with the close ration gears and a PMS LSD...it feels great, you are always in the torque band. I dont know if the car is actually any faster (It should be), but it sure feels that way. Great "investment"....I'll do it when wifey gets a better job.

Bill Verburg

They say a picture is worth a 1000 words,

Here's a comparison of a PMS box and a stock US box, same chassis/engine


Most don't regear 1 & 2 because of the cost of replacing the mainshaft, but taller motorsports 1 & 2 are extremely useful for track guys

TheOtherEric

I'm sure it's nice but dang it's expensive. In terms of bang-for-your-buck, it seems really poor IMHO. Perhaps it makes sense if you're an ultra-competitive cheating club racer but otherwise, if you're looking for speed, you need a couple turbos.

boulderbobo

I'm not sure I could live with this...

Rinty

Does anyone know whether, if you chose to re gear, leaving the stock 2nd gear in, and going with a taller 1st gear, the car would bog a bit, from a standstill?

My issue is with the approximate 1200 rpm split between those two gears.

Mark in Baltimore

One downside not mentioned is that if you ever plan on club racing your car in PCA's stock class, with a short gearbox your car will be illegal in stock or will be bumped to GT, where you will be a rolling chicane.

Cactus

WANT!

JM993

The RS is geared like this. IMHO, I'd prefer the stock 1st gear for a street car, a tall first is better for a track car. Trouble is, if you keep 1st, you really want to change 2nd as the gap between 1st and 2nd is too large.

Bill Verburg

It makes sense for anyone w/ any sporting sense at all. Stock g50/20 gearing was a result of EPA fuel economy mandates. The resultwas a 6 that was unuseable anywhere but on a 65mph freeway, the others were more or less filled in.

It mat noot sound like much but reducing the theoretical top end from g50/20 186@6800 to 163 is huge in terms of all around useability and fun factor, cruise rpm goes up some but it's is a none issue, 3000 rpm cruise /20 is 82mpg /30 is 72mph

Of course there are ots of other choices for the gearing, I have just found ~ 163top is ideal for a dual purpose car.

Of course if you race in a stock class you can't do this, but that isn't the point of the duscusssion.

and if all you care about is straight line acceleration or bragging rights at Maple Ridge then no this isn't for you.

Steve Weiner-Rennsport Systems

1st gear is machined into the mainshaft on ALL street gearboxes so you'll buy a new mainshaft to raise that,...

We usually leave 1st gear alone unless the vehicle is a full-blown race car where a "full-active" 6-speed is desirable. That permits the use of 1st gear on each lap in slow corners but not a good idea for anything driven on the street.

The proper way to reduce the RPM split between 1st & 2nd is by changing second gear.