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Old 02-07-2004, 09:35 PM   #1
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Just out of curiosity, what are the differances between a 92 ssei and a 1994 ssei. The 94'* make 20 extra hp. Is that because of the bigger throtle body and supercharger? Or are there other modifications that were done, like cpu programing? If it'* due to the supercharger, than couldn't a 92 ssei put on the supercharger from a 94 along with the TB and gain an extra 20hp right there? and 15lbs of tq? And is there even a big noticable differance between a 1992 and a 1994, like if you lined both of them up and raced? Which one would win stock? Just was just thinking about this.
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Old 02-07-2004, 09:43 PM   #2
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From what I understand, the supercharger is more efficient in 94/95.
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Old 02-08-2004, 12:48 AM   #3
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It doesn't move more air, just spins slower to deliver the same boost. The 92 also had a slightly less-improved valvetrain than the 93-95, and yes, a smaller TB (slightly) than the 94/95.

I would assume some different PCM programming, as well.
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Old 02-08-2004, 01:03 AM   #4
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Wasn't the exhaust different too?
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Old 02-08-2004, 01:07 AM   #5
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Exhaust is identical from 92-95, with the exception of the dreaded resonator in the 94/95.
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Old 02-08-2004, 01:56 AM   #6
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N10 muffler > SSEi exhaust!

94/95 had stupid computers too.
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Old 02-08-2004, 02:00 AM   #7
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Another difference is the switch from OBD I to OBD II wiring & ECU modifications. Plus if I remember right, the Transaxle utilized a different "Final Drive" ratio too. I believe GM pre-set the ECUs with different "Default Settings" in them too.
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Old 02-08-2004, 02:04 AM   #8
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Quote:
Originally Posted by willwren
It doesn't move more air, just spins slower to deliver the same boost. The 92 also had a slightly less-improved valvetrain than the 93-95, and yes, a smaller TB (slightly) than the 94/95.

I would assume some different PCM programming, as well.
Slightly smaller TB? 58mm vs 70mm, that'* over 20% bigger!!
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Old 02-08-2004, 03:54 AM   #9
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I believe roller rocker system was used in 94. No? Something with the valvetrain.
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Old 02-08-2004, 01:35 PM   #10
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Already got the valvtrain differences 92 is the only year without roller fulcrums on the rockers.

The TB'* aren't 58-70mm. My 93 SSEi has a 77mm bore, with an 81mm outer diameter. Jseabert'* 93 SSE is identical.

The original question asked the difference between a 92 and 94 SSEi. The exhausts between all SSEi/SSE from 92-94 (and the 95 SSEi) are all identical. All the SSEi'* had the same final drive ratio in those years, too.
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