SST MPH / Roll Bar Question

Keith 944 · 02-17-2022, 01:15 PM

OK being I can’t post a picture I will write these out these are the numbers for a flat out pass in my 3800 pound three speed small block Chrysler 3.90 gears 8” ATI converter leaving @3000 footbreak on Hoosier 10x 28 dots @ 2800da
1.537
4.452
6.948
98.12mph
9.121
10.969
121.50mph

Lenny5160 · 02-17-2022, 05:31 PM

On my door car, multiplying the 1/8 mile ET x 1.584 gets you the 1/4 mile time.

The factor is a little different for my dragster, but still very close.

I would imagine that a supercharged combo will run the back half harder, and also MPH well for the ET. The one complete run that you posted, the factor was 1.558. Applying that to your 7.32 nets a 11.404 in the 1/4.

In any case, I agree with Keith that you will likely be quite a ways from 135 in the 10.90 ET range.

DailyDriverSst · 02-18-2022, 01:02 AM

Glad i'm not too crazy. I was pretty sure 125ish would be about right but kept doubting myself.

I know going from 8psi to 12psi of boost will pick up alot, especially down low, assuming the converter doesn't eat it all up. But i'm still working alot of things out and have a long way to go on suspension - I still have a stock leaf pack and shackles.

I just ordered a set of Corbeau seats today to complement the rollbar going in. To Tom's credit, it's a heavy truck with C-clip axles and drum brakes indeed, but it's also all factory steel, so I'm trusting in the factory cab strength if something goes wrong.

Using my tax return on the seats and roll bar. Next winter's project will be a Ford 9" swap, aiming for the Dallas divisional of 2023 to get into S/St.

Keith 944 · 02-18-2022, 08:10 AM

[QUOTE=DailyDriverSst;657547
But i'm still working alot of things out and have a long way to go on suspension - I still have a stock leaf pack and shackles.
Using my tax return on the seats and roll bar. Next winter's project will be a Ford 9" swap, aiming for the Dallas divisional of 2023 to get into S/St.[/QUOTE]

Street/strip go with the caltracs mono leaf, shocks, and bars. They work great!

Lenny5160 · 02-18-2022, 04:40 PM

Quote:

Originally Posted by Keith 944

Street/strip go with the caltracs mono leaf, shocks, and bars. They work great!

I would not accept a free backhalf job to replace my Caltrac bar/split monoleaf/radial tire combination.

Calvert didn't make/brand shocks yet when I put it all together, or I would probably have those too.

02-17-2022, 01:15 PM	#1
Keith 944 VIP Member Join Date: Feb 2006 Location: Dela-where? Posts: 2,193 Likes: 1,162 Liked 1,877 Times in 577 Posts	Re: SST MPH / Roll Bar Question OK being I can’t post a picture I will write these out these are the numbers for a flat out pass in my 3800 pound three speed small block Chrysler 3.90 gears 8” ATI converter leaving @3000 footbreak on Hoosier 10x 28 dots @ 2800da 1.537 4.452 6.948 98.12mph 9.121 10.969 121.50mph __________________ KEITH MAYERS 2-1/2 X somebody Still many X nobody Last edited by Keith 944; 02-17-2022 at 01:25 PM.

02-17-2022, 05:31 PM	#2
Lenny5160 Senior Member Join Date: Nov 2015 Location: Inver Grove Heights, MN Posts: 898 Likes: 604 Liked 431 Times in 224 Posts	Re: SST MPH / Roll Bar Question On my door car, multiplying the 1/8 mile ET x 1.584 gets you the 1/4 mile time. The factor is a little different for my dragster, but still very close. I would imagine that a supercharged combo will run the back half harder, and also MPH well for the ET. The one complete run that you posted, the factor was 1.558. Applying that to your 7.32 nets a 11.404 in the 1/4. In any case, I agree with Keith that you will likely be quite a ways from 135 in the 10.90 ET range. __________________ S/ST 51 S/C 53

02-18-2022, 01:02 AM	#3
DailyDriverSst Junior Member Join Date: Dec 2017 Posts: 56 Likes: 0 Liked 7 Times in 6 Posts	Re: SST MPH / Roll Bar Question Glad i'm not too crazy. I was pretty sure 125ish would be about right but kept doubting myself. I know going from 8psi to 12psi of boost will pick up alot, especially down low, assuming the converter doesn't eat it all up. But i'm still working alot of things out and have a long way to go on suspension - I still have a stock leaf pack and shackles. I just ordered a set of Corbeau seats today to complement the rollbar going in. To Tom's credit, it's a heavy truck with C-clip axles and drum brakes indeed, but it's also all factory steel, so I'm trusting in the factory cab strength if something goes wrong. Using my tax return on the seats and roll bar. Next winter's project will be a Ford 9" swap, aiming for the Dallas divisional of 2023 to get into S/St.

02-18-2022, 08:10 AM	#4
Keith 944 VIP Member Join Date: Feb 2006 Location: Dela-where? Posts: 2,193 Likes: 1,162 Liked 1,877 Times in 577 Posts	Re: SST MPH / Roll Bar Question [QUOTE=DailyDriverSst;657547 But i'm still working alot of things out and have a long way to go on suspension - I still have a stock leaf pack and shackles. Using my tax return on the seats and roll bar. Next winter's project will be a Ford 9" swap, aiming for the Dallas divisional of 2023 to get into S/St.[/QUOTE] Street/strip go with the caltracs mono leaf, shocks, and bars. They work great! __________________ KEITH MAYERS 2-1/2 X somebody Still many X nobody