SST MPH / Roll Bar Question

DailyDriverSst · 02-16-2022, 10:27 PM

Finally got my truck almost done. I did 1100 miles on Rocky Mountain Race Week 2.0 with a tune kind-of duct taped together on 8ish pounds of boost

4400 pounds with me in it
408 small block with F1A procharger
1.80 low Glide, 4.10 rear gear
275 M&H DOT radial
2-step 3000

60': 1.78
330': 4.96
660': 7.67 @ 91
1000': 9.99
1320': 11.95 @ 114

Since then, I've moved some weight around, mounted 28x9 radial slicks, added traction bars, and changed to a 1.98 low gear. Same 8 pounds of boost (really closer to 7 at 1/8 mile). I've also creeped the 2-step up to 3500.

So far, best 1/8 ET is:

60': 1.67 ___(+0.11)
330': 4.74 ___(+0.22)
660': 7.32 @ 95 ___(+0.35)

Right now i'm moving even more weight around and tweaking on the leaf springs/suspension. I'm thinking I might be able to get the 2-step up to 4,000 without getting into the converter.

What would this equate to in the 1/4 mile as things stand? Wallace calculator says 11.66 @ 117, but I'm curious on real numbers. Based on the incremental gains, I'm thinking 11.50's, MAYBE high 11.40's?

Now my real question: Once I get weight and power management under control and move up a blower pulley to 12 pounds of boost, I'm obviously trying to nail 7.00 index in the 1/8 and 10.90 in the 1/4.

How close to the 135 MPH barrier might I get? I want to only do a 5 point roll bar if I can. I'm optimistically thinking I probably won't surpass 125?

02-16-2022, 10:27 PM	#1
DailyDriverSst Junior Member Join Date: Dec 2017 Posts: 56 Likes: 0 Liked 7 Times in 6 Posts	SST MPH / Roll Bar Question Finally got my truck almost done. I did 1100 miles on Rocky Mountain Race Week 2.0 with a tune kind-of duct taped together on 8ish pounds of boost 4400 pounds with me in it 408 small block with F1A procharger 1.80 low Glide, 4.10 rear gear 275 M&H DOT radial 2-step 3000 60': 1.78 330': 4.96 660': 7.67 @ 91 1000': 9.99 1320': 11.95 @ 114 Since then, I've moved some weight around, mounted 28x9 radial slicks, added traction bars, and changed to a 1.98 low gear. Same 8 pounds of boost (really closer to 7 at 1/8 mile). I've also creeped the 2-step up to 3500. So far, best 1/8 ET is: 60': 1.67 ___(+0.11) 330': 4.74 ___(+0.22) 660': 7.32 @ 95 ___(+0.35) Right now i'm moving even more weight around and tweaking on the leaf springs/suspension. I'm thinking I might be able to get the 2-step up to 4,000 without getting into the converter. What would this equate to in the 1/4 mile as things stand? Wallace calculator says 11.66 @ 117, but I'm curious on real numbers. Based on the incremental gains, I'm thinking 11.50's, MAYBE high 11.40's? Now my real question: Once I get weight and power management under control and move up a blower pulley to 12 pounds of boost, I'm obviously trying to nail 7.00 index in the 1/8 and 10.90 in the 1/4. How close to the 135 MPH barrier might I get? I want to only do a 5 point roll bar if I can. I'm optimistically thinking I probably won't surpass 125? Last edited by DailyDriverSst; 02-16-2022 at 10:33 PM.