what makes a good street tranny

[Peter]

Hi guys,
now my motor is running i m thinking of buying a beefed up tranny ( or having one rebuilt )
so what do you think are good ratios for a street tranny?
and it should hold up to the abuse..
i will never use slicks, but i would like to race a bit as well...
for ratios i was thinking for something between stock and race ( if it exists )
i have a type 3 tranny, but dont know if they are a good or bad base to start from...
also, maybe somebody knows how much $$ i have to save for this?
btw hp of my motor i dont know, but it pulls to 7grand quite hard

thanks, Peter

[Bewitched666]

Whats your ring and pinion ruff?

[Peter]

i think 4.125???
early IRS type 3 trans

[Zach Gomulka]

If you plan on driving it long distances at a reasonable speed, then stock ratios really are the way to go. 4.12 r+p, 3.78, 2.06 mainshaft, 1.26, .89. Use 3 gears in the 1/4 mile- my friends '67 achieves 13.8's on tall 215/65 radials with that combo with a pump gas 1915

[Martin Greaves]

This is a good way to work out which ratios you need.

www.johnmaherracing.co.uk/gearcalc.htm

[Rennsurfer]

Amen, brother... that's exactly what I want in my car for my big engine.
 

If you plan on driving it long distances at a reasonable speed, then stock ratios really are the way to go. 4.12 r+p, 3.78, 2.06 mainshaft, 1.26, .89. Use 3 gears in the 1/4 mile- my friends '67 achieves 13.8's on tall 215/65 radials with that combo with a pump gas 1915

[tikimadness]

I used to drive a irs gearbox and I put in a super diff and a heavy duty sideplate.It was surprisingly strong and it hold up with all my abuse.

Michael

[beetletom]

makeup and a dress. 

[Zach Gomulka]

makeup and a dress. 

Hahaha spat my pumpkin pie out!!

[Peter]

haha, good point
i dont drive it often on the highway,
so thats not really a concern,
i will try the calculator from JMR and do some self reflection

[Peter]

hi guys, was thinking about 1.48 3rd and 1.09 4th;
that would give me 90 km/h at 3500, and 180 at 7000
what are your thoughts?

[Bewitched666]

7000 rpm is alot of noise on the highway

[Zach Gomulka]

Shift point?

[Speed-Randy]

the person putting it together, hows there rep. that is unless you like doing it again

[danny gabbard]

lots of make up and good shoes

[Jim Ratto]

makeup and a dress. 

a wig helps too and a shaven chest

[Harry/FDK]

Hi Ruff. I got good information on my topic: Transmission Blues. (In Da Werks). Maybe that helps you as well.

[Peter]

hi guys, shift point is at 6500 or 7000 (depends)
thanks Harry,
indeed, good info!

[Zach Gomulka]

hi guys, shift point is at 6500 or 7000 (depends)
thanks Harry,
indeed, good info!

Well, if your shift point is 7k, then that is about what you want to cruise through the traps in in 4th gear, lets call it 110mph to give you a little room. That is if you want a full close ratio gearbox designed to do best on the strip. Now just do the math

[Harry/FDK]

Fourth might be loud on the Autobahn. I'm using earplugs. But happiness is a SNAPPY 4th gear.

[danny gabbard]

Dim the lights and they have to have a wig , I forgot about the wig , jim

[Jim Ratto]

Dim the lights and they have to have a wig , I forgot about the wig , jim

you must be inexperienced.

Sheep used to do the trannies at Buggy House. Or he was the tranny... can't remember.

[danny gabbard]

Do you need to soften the lights with sheep? Jim

[Peter]

you guys crack me up:)

[Peter]

Hi guys,
I ve been reading a bit on "other forums" and i think i will go for a 1.48 3rd and 1.04 or 1.09 4th and keep the 4.12 r/p
now about reenforcements that have to be made?
is this about it?

Stock 002 M/S
091 1st gear Idler
All new bearings (including pinion and 091 mainshaft gear carrier bearing)
New 1st gear synchro
Weddle HD sidecover
Weddle welded 3rd and fourth
Super Diff
10 Tooth Spiders
15 tooth side gears
4.12 O or 3.88 R&P

thanks , Peter

[Zach Gomulka]

3.78, 2.06 mainshaft, and I advise a 1.12 4th with the 1.48. With a 1.04 the 3-4 gap is too big, IMO.

[Jim Ratto]

Fourth might be loud on the Autobahn. I'm using earplugs. But happiness is a SNAPPY 4th gear.

I like stock ratios with 4.375:1 in my Bug. Sure, the rpm drops are a little wide, but I'd trade the bigger drops between shifts for sanity in 4th gear any day. With big cc engines, the need for close gears isn't as extreme as the smaller 1700-1900cc high strung stuff. My car pulls fairly well from about 2300rpm in its current state of tune, and kind of falls into "cruise mode" in 4th at about 4000rpm, which is faster than I really should be going on L.A. freeways anyway. I think my driving style goes hand in hand with stock 1st-4th and 4.375:1....  more sports car than drag car.
Ruff you're running a 2276 right? Maybe you don't need the close stack? I ran my 2276 with 86C with stock ratios for about 4 years and loved it.
In fact when I went close 3rd and 4th was the reason I began to hate my car.
Have fun
JIM

[Peter]

Hi Jim;
my car feels a bit slow in 3 rd and 4 th, but i ll take it for another trip today
and i have a longer r/p
its ok for highway use, but actually i dont drive it there much
Harry, so what gears did you end up with?
anyway, i still have some time ...as i still have to start saving for a box

[Bruce]

I ran my 2276 with 86C with stock ratios for about 4 years and loved it.
In fact when I went close 3rd and 4th was the reason I began to hate my car.

For a car that gets driven as much as yours, shouldn't it have a 5 gear in it?

[Harry/FDK]

Harry, so what gears did you end up with?

R/P  4.12

1-  3.78
2-  2.06
3-  1.26
4-  0.89