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Originally Posted by ols0051
We did have the wide band o2 plugged in. But later had problems with the sensor. We were able to get the jetting dialed in though. I bet my 89 gt stock can make these numbers. Somethings not right. All is new from top to bottom and is running perfect. maybe my combo is crap? The shop owner said that the numbers aren't law get to the track and see what it does. After I get new lifters. Someone turn on the snowmelter.....
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A bone stock '89 GT should put down somewhere in the 170-190rwhp area, depending on tranny, etc.
251rwhp is low for the combination, provided it's all put together right and tuned right. You probably have about 310hp at the crank. A lot better than stock, but probably up to 10% or so less than you should. If the C-4 is slipping enough to show up on a dyno, the tranny would have been shot by the end of tuning. I'm not familiar enough with very high stall converters to say how they play into the performance numbers. Your hp numbers are more than adaquate to get you into the 12s with a 1.6 - 60ft.