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Drag Racing Discussion Post your questions and info about how to best get these beasts down the 1320!


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  #11  
Old 03-03-2013, 11:39 AM
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Originally Posted by TheBlackHemi View Post
It's because the 2011s and up shift points aren't really sticking (diablo hasn't fully cracked the tuning 100%)...we can only rev to 5900rpm anything more and you will bounce off the rev limiter (locked at 6k). Plus the 5.0 is an higher rpm motor (stock), they can easily rev to 6500-7000rpm which helps hold the gear longer and putting your shift recovery at a greater rpm. Swapping to 6.1L valve springs is a must if you want to safely rev a Hemi that high but until all the tuning perimeters are fully unlocked we are SOL anyway (2011s and up). These 4gen hemi's have good potential but the tranny and the lack of aftermarket performance parts is the only thing stopping us.
Good info thanks!
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  #12  
Old 03-03-2013, 11:58 AM
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Heres a picture I found on Atcos website
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  #13  
Old 03-03-2013, 12:01 PM
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Trying to blow up picture
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  #14  
Old 03-03-2013, 01:15 PM
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Originally Posted by Dragpac View Post
I thought I had a good day until I read your post,13.40's and 13.20's with just a tune,headers and tires.
Anyway I raced the truck on the stock 33" tires and just the gears and tune.First pass it spun hard 13.91.
Next pass I dropped the air pressure and run a 13.82@99.17 w/2.03 60' on a hot lap.
Made a couple more hot laps and ran 3 more 13.80's then I let the truck sit for a hour and
Made a best pass of 13.72@99.79 w/2.000 60'
Now for the excuses,the 4.56's with the 33" tires seem more like 3.73's it crossed the traps at 5000 in fourth.Next week my son is going to run the short drag radial and I think it might run a 13.40-50 at 100-101mph with a 1.9something 60'
i'm impressed you ran those times on street's!!
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  #15  
Old 03-03-2013, 01:47 PM
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Originally Posted by Dragpac View Post

You know its funny that my 5.0 F150 that runs 12.60's with a stall and gears only 60' 1.77 but it pulls much harder once it gets moving 107 mph and the beast 60' is great but the ram just doesnt pull as hard through the high end.
what else is in the F150? I know no 5.0's that run that fast without a little help
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  #16  
Old 03-03-2013, 02:56 PM
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Originally Posted by chefred112 View Post
what else is in the F150? I know no 5.0's that run that fast without a little help
My ford has a circle d 3000 stall,4.10's,ARH long tubes w/3"duals,Boss intake,AFE cai,stock GT mustang cams,Boss valve springs,lakewood traction bars and 325/45/18 drag radial. 12.60's@107 w/1.77 60'
And with a 150 shot 11.63@117 w/1.60 60'
When I had cai,tune,no cats and a cat back with a drag radail it ran 13.09@103
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  #17  
Old 03-03-2013, 03:07 PM
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i'm impressed you ran those times on street's!!
Couldn't build it up at all or it would spin all through first.just stabbing the gas got me about 10' of spin 2.07 60'. Then I lowered the pressure to 25 psi and it dead hooked.
When we go back next weekend it will be on a 26" dragradial and with 7" less sidewall and better traction it should be much quicker.
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  #18  
Old 03-03-2013, 05:12 PM
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Originally Posted by TheBlackHemi View Post
It's because the 2011s and up shift points aren't really sticking (diablo hasn't fully cracked the tuning 100%)...we can only rev to 5900rpm anything more and you will bounce off the rev limiter (locked at 6k). Plus the 5.0 is an higher rpm motor (stock), they can easily rev to 6500-7000rpm which helps hold the gear longer and putting your shift recovery at a greater rpm. Swapping to 6.1L valve springs is a must if you want to safely rev a Hemi that high but until all the tuning perimeters are fully unlocked we are SOL anyway (2011s and up). These 4gen hemi's have good potential but the tranny and the lack of aftermarket performance parts is the only thing stopping us.
Well he has the b&g tune and he said that he can run it well up past 6000
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  #19  
Old 03-04-2013, 06:44 AM
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Well he has the b&g tune and he said that he can run it well up past 6000
We also have a B&G tune and 5800-5900 is all it will go before it hits the limiter.
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  #20  
Old 03-04-2013, 08:17 AM
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Even in my 07 my tuner had a heck of a time getting past 6200, it would say 6500 but hit the limiter everytime. It took quite a few tunes, but now I have it set to 6800 rev limit. You guys are running some really good times, I wish we had guys running more trucks up here, it might get me more motivated to get my big pig dialed in better.
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