how can i tell if my s1 is an ls or b16?
Something i found with searching
In some cases trying to ID a B-series tranny is not always possible from it's external markings. So how can you tell?
This is what i have found to be the easiest method of doing so. </p>
First you have to start off by taking the outer casing off. Fortunetly we already have a how to on that subject thanks to Plan B: How to: Take Apart a Transmission</p>
Now
that you have it apart. You can either go a step further and remove all
the internals to be able to count every gear, or just get a tooth count
on the final drive gear, it's opposing gear located on the counter
shaft, and the upper most gears on both the counter and main shafts to
calculate the transmissions 5th and final drive gear ratios.</p>
</p>
Once
you have counted how many teeth are on each gear, you need to divide
the number of teeth on the counter shaft, by the number of teeth on the
main shaft to find the gear ratio. I'll give you an example using the
transmission pictured. ** </p>
There are 25 teeth on the upper most
counter shaft gear and 35 teeth on it's opposing gear located on the
main shaft. If you divide 25 into 35, you come out with a .7142857
(.714) ratio, which is the 94+ LS transmission's 5th gear ratio. </p>
Now
using the same method, you can find the FD ratio by counting the teeth
of the final drive gear, and then dividing that by the number of teeth
of it's opposing gear located on the counter shaft, which would be 64 /
15 = 4.26666666 (4.266). The 94+ LS transmission's final drive ratio.</p>
Here is a list of B series tranny gear ratios for reference purposes:

The information in this chart is for reference only, and may not be 100% accurate in all cases. </p>
or you can use this:
http://www.bseries.net/html/specs/btrannyspecs.php</p>
Well that's about all there is to it. Hope this is helpful to some of you...</p>
Modified by JV at 8:07 PM 5/3/2004
In some cases trying to ID a B-series tranny is not always possible from it's external markings. So how can you tell?
This is what i have found to be the easiest method of doing so. </p>
First you have to start off by taking the outer casing off. Fortunetly we already have a how to on that subject thanks to Plan B: How to: Take Apart a Transmission</p>
Now
that you have it apart. You can either go a step further and remove all
the internals to be able to count every gear, or just get a tooth count
on the final drive gear, it's opposing gear located on the counter
shaft, and the upper most gears on both the counter and main shafts to
calculate the transmissions 5th and final drive gear ratios.</p>
Once
you have counted how many teeth are on each gear, you need to divide
the number of teeth on the counter shaft, by the number of teeth on the
main shaft to find the gear ratio. I'll give you an example using the
transmission pictured. ** </p>
There are 25 teeth on the upper most
counter shaft gear and 35 teeth on it's opposing gear located on the
main shaft. If you divide 25 into 35, you come out with a .7142857
(.714) ratio, which is the 94+ LS transmission's 5th gear ratio. </p>
Now
using the same method, you can find the FD ratio by counting the teeth
of the final drive gear, and then dividing that by the number of teeth
of it's opposing gear located on the counter shaft, which would be 64 /
15 = 4.26666666 (4.266). The 94+ LS transmission's final drive ratio.</p>
Here is a list of B series tranny gear ratios for reference purposes:
The information in this chart is for reference only, and may not be 100% accurate in all cases. </p>
or you can use this:
http://www.bseries.net/html/specs/btrannyspecs.php</p>
Well that's about all there is to it. Hope this is helpful to some of you...</p>
Modified by JV at 8:07 PM 5/3/2004
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thats a ton of info thanks alot....i searched alot also... couldnt find any info on identifying the difference from the casing....seems like u cant...that sucks alot
I know that my JDM B16A transmission says 'S1' on the label but has 'J1' printed on the case itself. I don't know if USDM transmissions say 'J1'. But if they don't, this could be an identifier.
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EH3forlife
Transmission & Drivetrain
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Apr 11, 2012 11:47 AM
b16, count, countershaft, ls, main, model, number, s1, teeth, tranny, transmission, transmisson, transmittion




