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B18b1 Engine horsepower

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Old Mar 13, 2009 | 09:05 AM
  #11  
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Originally Posted by Spec R
i highly recommend the first mod being a transmission swap. GSR transmission with a B18B1 is a nice combo, and big personality change for the demeanor of the engine.
Agreed, GSR tranny will make quite a difference.
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Old Mar 13, 2009 | 12:00 PM
  #12  
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Originally Posted by gingas
Yeah, definately if you can work on your suspension also. So, if you put a GSR tranny on a B18B. At 80 what would your tach be at in 5 th gear. I know my tach is at 4K @80 in my GSR.
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Originally Posted by Lynxs1981
Agreed, GSR tranny will make quite a difference.
yep the GSR trans in my LS was at 4k at 80mph too.
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Old Mar 13, 2009 | 02:09 PM
  #13  
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Hmm.. that's wierd. At 73mph (confirmed on GPS) in 5th gear my GSR is at 4k, but my speedo says 80 or so.

I think a GSR or even a B16 tranny would be great for that motor. The only time an LS tranny is really used is when you have 500+ whp and you need the longer gearing so you're not blowing them off at 40mph and up.
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Old Mar 13, 2009 | 04:33 PM
  #14  
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are you saying i can do a complete tranny swap without any other things being factored? if so, this summer the gsr tranny will be dropped in lol
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Old Mar 13, 2009 | 09:26 PM
  #15  
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Originally Posted by Khazzy
are you saying i can do a complete tranny swap without any other things being factored? if so, this summer the gsr tranny will be dropped in lol
Yes. All B-series trannies fit all B-series motors, except the B17A1 '92-'93 GS-R spline count is different.
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Old Mar 14, 2009 | 07:12 AM
  #16  
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dang lol ima go find a low milage tranny in the jyard, thanks bro good idea
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Old Mar 14, 2009 | 11:25 AM
  #17  
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just remember going to the GSR ratios you're going to loose some on your gas mileage

Originally Posted by pslsnakes
Hmm.. that's wierd. At 73mph (confirmed on GPS) in 5th gear my GSR is at 4k, but my speedo says 80 or so.

I think a GSR or even a B16 tranny would be great for that motor. The only time an LS tranny is really used is when you have 500+ whp and you need the longer gearing so you're not blowing them off at 40mph and up.
tire/wheel size can affect speed, this is probably amplified in that case by tire warp that can occur at high speed
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Old Mar 14, 2009 | 02:06 PM
  #18  
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seriously? i rarely shift when driving to school above 3k, i dont think the mileage is going to be that much different, now if i am shifting later, i understand there lol. but who does 80 in the city? i sure as hell dont haha, now on the track, that could be a factor
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Old Mar 14, 2009 | 02:48 PM
  #19  
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Originally Posted by Khazzy
seriously? i rarely shift when driving to school above 3k, i dont think the mileage is going to be that much different, now if i am shifting later, i understand there lol. but who does 80 in the city? i sure as hell dont haha, now on the track, that could be a factor
you're not going to see any difference through 1st and 2nd... above that the ratio's are placed closer for acceleration... you probably won't see much difference in the city, but you will be running a fair bit higher on the freeway.

Remember that you're also only going to only see that acceleration increase on the highway... just food for thought
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Old Mar 14, 2009 | 04:17 PM
  #20  
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Originally Posted by sherwood
just remember going to the GSR ratios you're going to loose some on your gas mileage



tire/wheel size can affect speed, this is probably amplified in that case by tire warp that can occur at high speed
I'm on stock 15" wheels, with a stock rated 195/55/15 series tire.
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