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Billy Nees · 03-15-2021, 07:40 AM

Oh, we can richen it up enough. When we made the first pass, we put the OEM tune back in it (20% more fuel) and it didn't like it one bit. After making little changes and making little progress and looking at a busy day when we weren't going to get many more runs, we put the 15.08 tune back in it and it went a 15.108 but the MPH is down. Next run we added 5% fuel and removed 3* of timing(now 26*) and it went the 15.055 but still 1/2 MPH slow from last year even with 200' better air. Without breaking down the whole time slip, it ran it's all-time best ETs and MPHs in the 1/8th by a good amount and lost more and more to the 1/4. It doesn't seem to be a torque problem. Next time out, we've got to try lowering our shift points(6700) at least on the 2-3 shift. The OEM specs are 140 @ 5600 and 150 @ 4000 (and it IS still stock) so we might be at a point where we're just too far past the peaks.

03-15-2021, 07:40 AM	#189
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,223 Likes: 3,100 Liked 6,789 Times in 1,524 Posts	Re: Not for Nuthin' But Close! Oh, we can richen it up enough. When we made the first pass, we put the OEM tune back in it (20% more fuel) and it didn't like it one bit. After making little changes and making little progress and looking at a busy day when we weren't going to get many more runs, we put the 15.08 tune back in it and it went a 15.108 but the MPH is down. Next run we added 5% fuel and removed 3* of timing(now 26*) and it went the 15.055 but still 1/2 MPH slow from last year even with 200' better air. Without breaking down the whole time slip, it ran it's all-time best ETs and MPHs in the 1/8th by a good amount and lost more and more to the 1/4. It doesn't seem to be a torque problem. Next time out, we've got to try lowering our shift points(6700) at least on the 2-3 shift. The OEM specs are 140 @ 5600 and 150 @ 4000 (and it IS still stock) so we might be at a point where we're just too far past the peaks. __________________ Billy Nees 1188 STK, SS World's greatest Under-Achiever!