I recently had a GSR tranny trapping 129mph in 4th around 7-8k on 25in slicks. I did a search and B16A is best for the strip. My car is a daily driver so I also wanted better gas miles. I ues the http://www.autocrossing.com/cgi-bin/gearcalc.cgi and should trap 134mph on 25in slick at the end of 4th around 8800rpm. So, I currently installed a B16a tranny with a LS 5th gear and was better cruising in the freeway.

I wanted to know is everyone using a B16a and revving up to 9k-10k or what would be the best combos of gears?

I was thinkig B16 - 1st, 2nd, 3rd, GSR - 4th and LS 5th


Modified by kazino42 at 9:23 AM 7/29/2005

 

I've thought about trying an LS Final drive (4.26) in my b16 tranny. By my calculations, it would not quite be as long as a GSR tranny. It seems like it would work well, but I'm not sure.

How do you like the LS 5th gear?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tthame1 &raquo;</TD></TR><TR><TD CLASS="quote">I've thought about trying an LS Final drive (4.26) in my b16 tranny. By my calculations, it would not quite be as long as a GSR tranny. It seems like it would work well, but I'm not sure.

How do you like the LS 5th gear? </TD></TR></TABLE>

Cruising in 70mph around 3100rpm is nice, way better than before at higher rpms.

I noticed changing from GSR to B16 gears, I'm getting better traction. I thought I would get more wheel spin and less traction, but the tires are hooking up better.

I thought about it, the gears on the B16 rev's high with lower mph. Meaning speed start up slower, so hooking up better and then increase faster as RPM rises. Maybe someone else has a different opinion.

These gears does feel a lot better.

 

I was thinking LS 1st and 2nd and then GSR 3rd and 4th and LS 5th.
If u can get 1st and 2nd to hook up, then it would be to your advantage to make them loner.
Thats only IF u can get them to hook.

Then having the shorter 3rd and 4th would make it easier to increase speed.

The LS 5th is for crusing

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93supercoupe &raquo;</TD></TR><TR><TD CLASS="quote">I was thinking LS 1st and 2nd and then GSR 3rd and 4th and LS 5th.
If u can get 1st and 2nd to hook up, then it would be to your advantage to make them loner.
Thats only IF u can get them to hook.

Then having the shorter 3rd and 4th would make it easier to increase speed.

The LS 5th is for crusing </TD></TR></TABLE>

That would be the same as a GSR tranny with LS 5th gear.

GSR, LS, 1st and 2nd are the same
GSR, B16, LS 1st are the same
B16 2nd is slightly closer than GSR, LS

Best combo would probably be
GSR 1st and 2nd B16 3rd and 4th
LS 5th or GSR 5th

It was easier to just use the B16 and change to LS 5th.

 

Bump for some more opinion.

 

is the LS 5th gear identical on all year models, say 90-93, 94-96? am new to the gearing world sorry, i don't mean to hijack this thread at all

 

i'm using a jdm s80 tranny. b16 1st 2nd & 3rd, gsr 4th & 5th with 4.785 final drive with a stock lsd

 

Here's some info on the gearing on the trannys that I got from Gearing/Speed Calculator.

This is with 25in tires and 9k rev.

GSR gears Shift RPM Speed @ 9000 RPM
1st -- N/A -- 47.1
2nd -- 5294 -- 80.1
3rd -- 6442 -- 111.9
4th -- 6843 -- 147.1
5th -- 6850 -- 193.3

B16 gears Shift RPM Speed @ 9000 RPM
1st -- N/A -- 47.1
2nd -- 5865 -- 72.3
3rd -- 6234 -- 104.3
4th -- 6833 -- 137.4
5th -- 6894 -- 179.4

LS gears Shift RPM Speed @ 9000 RPM
1st -- N/A -- 48.6
2nd -- 5294 -- 82.6
3rd -- 6011 -- 123.6
4th -- 6851 -- 162.4
5th -- 6652 -- 219.8

 

From my experience with some rwd setups, changing from say a 3.42 gear in the rear to a 4.56 resulted in less wheel spin but quicker acceleration. If you have the power to melt the tires with a 3.42 gear, changing to a 4.56 will actually help control the wheel spin as it is not turning the wheels at as high of a speed as the 3.42 gears.
Applying this to fwd should have the same effect I would think. The lower the gear ratio # (3.42) the more work the engine and trans has to do and the faster the tires will be turning, more of a chance to spin. You will get better acceleration most of the time with a higher # (4.56) and also less stress on the rest of the engine and trans. And from my experience...helps with higher power setups and traction by lowering tire speed.
I use a 100% stock geared gsr trans, quaife lsd. when it blows apart i will probably change stuff. Right now it pushes the same in and out of the garage hopeing to be in mid 10's when car does run.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 80884 &raquo;</TD></TR><TR><TD CLASS="quote">From my experience with some rwd setups, changing from say a 3.42 gear in the rear to a 4.56 resulted in less wheel spin but quicker acceleration. If you have the power to melt the tires with a 3.42 gear, changing to a 4.56 will actually help control the wheel spin as it is not turning the wheels at as high of a speed as the 3.42 gears.
Applying this to fwd should have the same effect I would think. The lower the gear ratio # (3.42) the more work the engine and trans has to do and the faster the tires will be turning, more of a chance to spin. You will get better acceleration most of the time with a higher # (4.56) and also less stress on the rest of the engine and trans. And from my experience...helps with higher power setups and traction by lowering tire speed.
I use a 100% stock geared gsr trans, quaife lsd. when it blows apart i will probably change stuff. Right now it pushes the same in and out of the garage hopeing to be in mid 10's when car does run. </TD></TR></TABLE>

That's what I'm experiencing after changing the gears from GSR to B16. I was spinning a lot and now with the B16 gears, it hooks up way better. I be going to the track tonight and see what the difference.

That's probably why I see boosted B16 running so good. They hooking up good and has a better acceleration.

 

yea, a lot of people think that by going with a lower gear (higher number) that it will spin even more, when like i said, it will actually help control the spin while giving you more accelleration.

Let us know how it works out.

 

I went out last night, with the new gears. The powerband felt way better and smoother. Here's is a comparison:

Best time with GSR tranny, boosting 22lbs

60 ---- 1.869
330 ---- 5.028
1/8 ---- 7.477
MPH ---- 99.54
1000 ---- 9.600
1/4 ---- 11.367
MPH ---- 128.29

Best time with B16 tranny, boosting 19lbs

60 ---- 1.878
330 ---- 5.048
1/8 ---- 7.540
MPH ---- 100.16
1000 ---- 9.680
1/4 ---- 11.472
MPH ---- 126.40

I was turning up the boost slowly with my MBC and ran out of runs. It looks like I was getting a better topend with the B16 tranny. I would say about a 10th of second difference from switching gearing. And also, enjoyed driving with the LS 5th gear.