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1/4 mile run with mods

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rlarson87

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Discussion starter · #1 ·
whats everyone 1/4 mile time and mods done. I'm very disappointed to say the least right now. I have long tube header 1 7/8" high flow cats, magnaflow exhaust. 392 intake, comp cam 274 with mds delete, and lowered on eibach springs.

My runs were terrible
I believe 60ft was 2.1 with a 1/4 mile of like 14.33. I can't find my slip to give exact numbers but i'm positive i need a torque converter, and maybe even gears but want to start what everyone has done to better times with similar mods.

My dyno was 362whp, 363 wtq
 
Discussion starter · #4 ·
rlarson87 said:
whats everyone 1/4 mile time and mods done. I'm very disappointed to say the least right now. I have long tube header 1 7/8" high flow cats, magnaflow exhaust. 392 intake, comp cam 274 with mds delete, and lowered on eibach springs.

My runs were terrible
I believe 60ft was 2.1 with a 1/4 mile of like 14.33. I can't find my slip to give exact numbers but i'm positive i need a torque converter, and maybe even gears but want to start what everyone has done to better times with similar mods.

My dyno was 362whp, 363 wtq
Click to expand...
sorry i have a 15 durango rt
 
#9 · (Edited)
I no longer make "1/4 mile runs" (unless it's to yonder 7-11), but just had to say, "BRAVO" and "WELL DONE", as Stellantis continues to build the most awesome muscle cars still in mass-production while paying massive fines ($235.5 Million just for 2018-2019 model years).

With resistance and backup like that (even with their future electric cars), 1/4 mile racing and even NHRA have a bright and intriguing future.
I wish I could compete, but I'm 70 and on a pension. Not complaining, just explaining there. ;)
Hoping you carry the baton with pride.
Skip-ahead to 2:50..................

 
Discussion starter · #11 ·
Chase300 said:
2.1 60' is bad. You need to be under 2.0....so you need to lose some weight or gain some tq down low.
Every .1 you lower the 60' will gain you typically .2 in the 1/4 time running the same mph.
1.9 60' and you're in the 13's.
Click to expand...
Ya i understand how the numbers work, I've drag raced for a bit, but usually with built motors or FI. This is my first mainly bolt on lower hp car with a bigger cam. I was just trying to see what others have ran, or if swapping to 3.45s helped a ton or torque converter. Edge Pro converter recommended 3200 stall converter, my tuner said 3000 would be good for strip/dd. I just don't want to waste money on a torque converter and not be happy. My local torque converter shop told me 3000 was to much for a daily driver, and that he recommended 2500 with tightening up the internals.
 
Discussion starter · #12 ·
rlarson87 said:
Ya i understand how the numbers work, I've drag raced for a bit, but usually with built motors or FI. This is my first mainly bolt on lower hp car with a bigger cam. I was just trying to see what others have ran, or if swapping to 3.45s helped a ton or torque converter. Edge Pro converter recommended 3200 stall converter, my tuner said 3000 would be good for strip/dd. I just don't want to waste money on a torque converter and not be happy. My local torque converter shop told me 3000 was to much for a daily driver, and that he recommended 2500 with tightening up the internals.
Click to expand...
My f150 was 1.9 60' and ran a 13.3 on a 6" lift.
 
#13 ·
You have some nice mods and I would think you should be a little quicker than low 14’s.

There is a member on the forum HEMIWOT who’s gone 11’s (confirmed with actual time slips, pics and videos) and is the subject matter expert on heavily modded DD.

Please post pics of your DD, time slips and dyno numbers.
 
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#14 ·
rlarson87 said:
Ya i understand how the numbers work, I've drag raced for a bit, but usually with built motors or FI. This is my first mainly bolt on lower hp car with a bigger cam. I was just trying to see what others have ran, or if swapping to 3.45s helped a ton or torque converter. Edge Pro converter recommended 3200 stall converter, my tuner said 3000 would be good for strip/dd. I just don't want to waste money on a torque converter and not be happy. My local torque converter shop told me 3000 was to much for a daily driver, and that he recommended 2500 with tightening up the internals.
Click to expand...
Copy.
My butt-meter said the 3.45's help off the line...but another member here who did some actual testing show minimal gain...though I believe it helped him reach his 12's goal as he added mods.
Have to search for his handle...I believe he posted on youtube his progress as well as here.
 
#15 ·
rlarson87 said:
whats everyone 1/4 mile time and mods done. I'm very disappointed to say the least right now. I have long tube header 1 7/8" high flow cats, magnaflow exhaust. 392 intake, comp cam 274 with mds delete, and lowered on eibach springs.

My runs were terrible
I believe 60ft was 2.1 with a 1/4 mile of like 14.33. I can't find my slip to give exact numbers but i'm positive i need a torque converter, and maybe even gears but want to start what everyone has done to better times with similar mods.

My dyno was 362whp, 363 wtq
Click to expand...
AWD? or RWD?. Also, what altitude did you run at? That's only 35-40 to the rear wheels over a stock dyno near sea level.

Also at the track you won't get great tractor m if it's prepped. You need the right tires with the right compound.
 
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Discussion starter · #16 ·
HEMIWOT said:
AWD? or RWD?. Also, what altitude did you run at? That's only 35-40 to the rear wheels over a stock dyno near sea level.

Also at the track you won't get great tractor m if it's prepped. You need the right tires with the right compound.
Click to expand...
Awd, it was 52whp over stock. I was 309 whp
stock and 361 after.
Elevation at Seattle track is 308. I believe DA the day I ran was 1100
 
Discussion starter · #17 ·
HEMIWOT said:
AWD? or RWD?. Also, what altitude did you run at? That's only 35-40 to the rear wheels over a stock dyno near sea level.

Also at the track you won't get great tractor m if it's prepped. You need the right tires with the right compound.
Click to expand...
Once it’s moving it seems decent it’s really just the launch. It’s a turd from like 0-20mph off the line. I tried with and without traction control,
I tried a 2200rpm dump, 1700rpm. Also tried leaving off nothing.
 
#18 ·
1100-1200rpm launch disables torque control at launch. You may pick up a 1/10th if done right. However, the Durango is a serous load off the line. You need gears :D before a converter.
 
#19 ·
Vice-White said:
1100-1200rpm launch disables torque control at launch. You may pick up a 1/10th if done right. However, the Durango is a serous load off the line. You need gears :D before a converter.
Click to expand...
Yep 3.70 and higher stall converter will help the launch a lot.
 
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#20 ·
rlarson87 said:
Awd, it was 52whp over stock. I was 309 whp
stock and 361 after.
Elevation at Seattle track is 308. I believe DA the day I ran was 1100
Click to expand...
Ok you have good altitude there. Pretty good stock dyno. So 52 is pretty good. Try tuning with race gas 100+, will help, also the 3.09 gears does it no favors off the line with 30in tires. Cheap 3.45 gears with 28in will get you a really good ratio. 3.70 SRT gears are pricier but the best you can do for the Durango. A higher stall converter will help either way.
 
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