Help me understand 60 vs. trap.
Help me understand 60 vs. trap. I'm confused on some things, I'm a drag racing newb. If I throw out some questions and get some answers it should help me understand more? This is all mostly concerning gearing and traction on my m6 with mods below. 25.3" dia. tires.
Does a lower 60' equal a higher or lower trap speed and why?
At what point do 4.10's give an advantage over 3.42's?
What's the fastest trap and best ET that can be achieved with 3.42's and a near stock size rear tire without shifting into 3rd with X 60'? (Does that make sense?)
How does tire spin negatively affect RPM's at the traps or does it?
With 3.42's, am I supposed to be near redline in 3rd at the traps?
Will more horsepower cause me to redline further away from the finish line or will I just get there faster at the same RPM's?
Is hitting 4th with 3.42's ideally every possible in the quarter?
I know this is alot of questions and could take many long posts to answer them all but some help will really clear up some things about my car and what to do to run faster.
My current best is
2.32 60' on street tires
9.35 @ 78.63 1/8th
14.239 @ 102.06 1/4
This is at ~4900 DA and the car doesn't seem to have much left in it at this point.
Thanks for any advice anyone can provide.
Does a lower 60' equal a higher or lower trap speed and why?
At what point do 4.10's give an advantage over 3.42's?
What's the fastest trap and best ET that can be achieved with 3.42's and a near stock size rear tire without shifting into 3rd with X 60'? (Does that make sense?)
How does tire spin negatively affect RPM's at the traps or does it?
With 3.42's, am I supposed to be near redline in 3rd at the traps?
Will more horsepower cause me to redline further away from the finish line or will I just get there faster at the same RPM's?
Is hitting 4th with 3.42's ideally every possible in the quarter?
I know this is alot of questions and could take many long posts to answer them all but some help will really clear up some things about my car and what to do to run faster.
My current best is
2.32 60' on street tires
9.35 @ 78.63 1/8th
14.239 @ 102.06 1/4
This is at ~4900 DA and the car doesn't seem to have much left in it at this point.
Thanks for any advice anyone can provide.
Last edited by joblo1978; Sep 13, 2005 at 09:43 PM.
Yes hitting fourth is possible... My car went across the line in fourth everytime with 3.42's. I don't remember being able to do 102 mph in 3rd with 3.42's though, that sounds pretty high for 3rd, but I'm not sure. Someone else will know for sure.
Originally Posted by SPEEDYws6
Yes hitting fourth is possible... My car went across the line in fourth everytime with 3.42's. I don't remember being able to do 102 mph in 3rd with 3.42's though, that sounds pretty high for 3rd, but I'm not sure. Someone else will know for sure.
I guess one other question would be how does this extremely high altitude affect my gearing and trap speeds? I have so many questions and there are so many unknowns to me. I just want to go faster.
4.10s with a 26" slick would be the ideal combo. If you wanted to run a 28" slick, then 4.30s would be the minimum, but would recommend a 4.56. I don't see how you're not shifting into 4th going through the traps in a 1/4 mile. If I remember right, when my car was had a lid and Borla, I was shifting into 4th everytime and was doing mid/lower 13s. Put a set of drag radials on it and it should improve your times significantly. Drop that 60 ft. will drop your ET and up your MPH.
By the way, altitude has a big part in ET. Down here in the winter, density altitude gets deep into the negatives and way above in the summer. For example, last winter the best DA I ran in was -1900, by the end of May, it was +1900. I'm sure the summer was well above +2000.
All the F-Bodies here wind out at 3rd at the end of the track. None of us with 3.42's hit 4th and I'm faster than them. Should I hit fourth at lower DA?
I plan on getting some drag radials, trust me. My goal is to run 11's on nitrous and 12's cam only up here.
Anyone have more to add? If you need a video to see me not hitting fourth, here ya go...
http://video.ls1tech.com/Player.aspx...0-BE18206D4563
This was a 14.5 run, actually one of my faster one's with the wife in the car too. Was done with mods below.
Here's another one, never hitting fourth...
http://video.ls1tech.com/Player.aspx...5-D66D3A182964
I plan on getting some drag radials, trust me. My goal is to run 11's on nitrous and 12's cam only up here.
Anyone have more to add? If you need a video to see me not hitting fourth, here ya go...
http://video.ls1tech.com/Player.aspx...0-BE18206D4563
This was a 14.5 run, actually one of my faster one's with the wife in the car too. Was done with mods below.
Here's another one, never hitting fourth...
http://video.ls1tech.com/Player.aspx...5-D66D3A182964
Last edited by joblo1978; Sep 14, 2005 at 12:13 AM.
Originally Posted by SPEEDYws6
Yes hitting fourth is possible... My car went across the line in fourth everytime with 3.42's. I don't remember being able to do 102 mph in 3rd with 3.42's though, that sounds pretty high for 3rd, but I'm not sure. Someone else will know for sure.
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Originally Posted by joblo1978
Is all the spinning off the line causing me to red-line later in the 1/4 or does it not affect your finishing RPM's at all?
I plan on getting some drag radials, trust me. My goal is to run 11's on nitrous and 12's cam only up here.
I'm with you on the 3rd gear question, because i've seen a guy trapping 109 mph in 3rd 1/4 mile wise. He, of course, like me had his redline raised though. I'm going to try to avoid the shift to 4th altogether.
Originally Posted by Denom
Be careful if you plan on running N20 and not shifting into 4th. From what my understanding is, if you hit the rev limiter while going WOT, with N20, you could blow the motor (Dumping N20, but no fuel). That is just what I have heard though.
I'm with you on the 3rd gear question, because i've seen a guy trapping 109 mph in 3rd 1/4 mile wise. He, of course, like me had his redline raised though. I'm going to try to avoid the shift to 4th altogether.
I'm with you on the 3rd gear question, because i've seen a guy trapping 109 mph in 3rd 1/4 mile wise. He, of course, like me had his redline raised though. I'm going to try to avoid the shift to 4th altogether.
