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In a recent post I read where several members posted that with drag race tuning a certain truck would achieve quicker and faster performance numbers than with his current sled pulling tuning.
Now I'm just a simple trial and error type person so I would like to hear from the various members that know sled pulling and drag racing really well that could tell me what I seem to be lacking in the understanding of these 2 sports concerning power output.
Thanks in advance.
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I simply thought that with drag racing you "tuned" the truck to accelerate as fast as possible without blowing stuff up and with pullin' you did the same but as you leave the line you have to spank yourself with your cowboy hat and yell " wachis ya'll!! coo coo coo ceeeee ( in yer best "Roscoe P Coletrain" voice... [img]/ubbthreads/images/graemlins/shrug.gif[/img] [img]/ubbthreads/images/graemlins/shrug.gif[/img] [img]/ubbthreads/images/graemlins/tongue.gif[/img] [img]/ubbthreads/images/graemlins/rolleyes.gif[/img] [img]/ubbthreads/images/graemlins/eek.gif[/img] [img]/ubbthreads/images/graemlins/smokin.gif[/img] [img]/ubbthreads/images/graemlins/smokin.gif[/img] [img]/ubbthreads/images/graemlins/biggrin.gif[/img] [img]/ubbthreads/images/graemlins/biggrin.gif[/img]
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david, i dont know much about either but i can say this. it has always been true in my endevors..."actions speak louder than words"...and another little ditty... "talk is cheap" [img]/ubbthreads/images/graemlins/wink.gif[/img] hope you understand where im going with this.
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I would have thought that for the most part they would be similar. The different points between the two (and I'm only thinking out loud here) would be transmission strategy, timing and TC lockup - which make a huge difference at the strip. The bigger difference may be with the turbos as when you pull, the truck is fully spooled before the load comes on, whereas at the strip a laggy turbo will bog you down at launch killing a good time. Just my .000000002
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somwhere on this very same site is BBunting's vid's of a drag strip run. He is really into pulling, and he has vid's of those runs as well. My asessment of his drag runs is that he takes off the line almost like my stocker, and then all of a sudden it is like Godzilla running downhill. (turbo finally wound up?) Seems to me that Bunting's truck is meant to pull not drag, but ultimately the torque curve may be higher in the HIGHLY modified truck, but it acts the same (with more of everything) on an unloaded run. Only Bunting can answer this ?? for all of us. I am just watching the vid's he has posted. [img]/ubbthreads/images/graemlins/shrug.gif[/img]
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simply put in drag racing you start at the bottom and try to work your way up, and in sled pulling you start at the top and try to keep it up thier as the motor pulls down.
you have alot more issues with programing and governor controls in sled pulling espically with the manual trucks. Housey can back that up.
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In pulling most true truck have big laggy turbos, there for like me i set at the start at 4000rpms or more slowly slipping the clutch to get boost built so as hit 30-35psi i start rolling off the clutch tell i fell the truck hooked up and then relase the clutch and boost goes to around 42-45 and 3000 rpms by that time and holds that till i spin out on a sled that pull a even load all the way down then there drag race sleds that start out heavy then mid track free up and motor revs 34-3600 rpm then hits hard at the end and rpms go to 2400 and truck falls on its face, as in a auto truck it would down shift and keep the boost, me and travis think on these drag race sled its freeing are motors up and cutting back the fuel a lil then when the pan hits it the ecm cant catch back up .
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I simply thought that with drag racing you "tuned" the truck to accelerate as fast as possible without blowing stuff up and with pullin' you did the same but as you leave the line you have to spank yourself with your cowboy hat and yell " wachis ya'll!! coo coo coo ceeeee ( in yer best "Roscoe P Coletrain" voice...
david, i dont know much about either but i can say this. it has always been true in my endevors..."actions speak louder than words"...and another little ditty... "talk is cheap" hope you understand where im going with this.
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Now that right there is funny!
Typically when you are sitting at the line at a drag race you are spooling your turbos up. You hit the first set of stageing lights and then stop and spool it up then move into the second lights and wait for the count down. So you can have a laggy turbo and still have it spooled and ready to go for a drag racer.
Well that would come down to haveing it set up right for drag raceing. You should be able to ge them spooled up just to the point before they pull through the brakes which is going to getting right into the power. I mean if you are into the power enough to pull through the brakes the thing is going to launch HARD. And it won't be that far off of haveing the turbos lit.
I'd wager that sled pulling is a little bit tougher to tune for.
In drag racing it is easier to get past the bottom end of the tables and count on everything up top to carry the truck. In sled pulling you gotta have the bottom of the tables right to get to the top of them.
If it has a halfway reasonable turbo setup and it spools with a sled on, it will probably spool at the dragstrip.
Sound like a reasonable thought process?
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