little gear selection help

J

jones95runner

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Joined
Jan 14, 2010
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want to pick up some wheel speed...... runnin 33s 3.55s pulling 3lo..... tracks are preaty much sticky around here for the most part.....im thinkin 4.88s and 4lo? somebody correct me if im wrong or would it be cheaper on me to try to find some 35s and stay in 3lo wiht my gears.......or will i be more likely to break then?? busted the carrier in it sat night it was a lsd........ wat i was wonderin should i go on and swap gears out why i have it apart?
 
jones95runner said:
want to pick up some wheel speed...... runnin 33s 3.55s pulling 3lo..... tracks are preaty much sticky around here for the most part.....im thinkin 4.88s and 4lo? somebody correct me if im wrong or would it be cheaper on me to try to find some 35s and stay in 3lo wiht my gears.......or will i be more likely to break then?? busted the carrier in it sat night it was a lsd........ wat i was wonderin should i go on and swap gears out why i have it apart?
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Did you break the carrier or the spider gears?
 
zstroken said:
Did you break the carrier or the spider gears?
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not for sure yet i know it got the spiders but im headed that was right now to see wat all it got...... friend of mine pulled the cover yesterday i was tryin to explain to him wat the needed to be lookin for he jus said there was stuff everywhere lol so i'll go look for myself tonight
 
Sounds like spider gears which are common in the LS apps.
 
jones95runner said:
hit it right on the money spider gears are shot
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I know the feeling....did a pull off with a Megacab in Scottsville, KY one night. We both went out the gate twice...so they had these manual spikes on a ancient sled we were pulling and they turned them over so we were dragging from a dead stop. Mine hopped straight outta the hole and I shut er down.....drove mine home...with the azz end LEAPING around every corner :eek: had no clue till I pulled the cover the next day. Now I have a D80 LS carrier with 2 busted spiders just taking up room in my shop. Oh...they mega threw his carrier bearing and had to call a trailer!LOL:owned:

Good luck on the new gears 4.88s and 4 lo is the direction I'm headed soon. 3rd low & 3.55's just isn't enuf to win anymore!
 
Got Smoke? said:
I know the feeling....did a pull off with a Megacab in Scottsville, KY one night. We both went out the gate twice...so they had these manual spikes on a ancient sled we were pulling and they turned them over so we were dragging from a dead stop. Mine hopped straight outta the hole and I shut er down.....drove mine home...with the azz end LEAPING around every corner :eek: had no clue till I pulled the cover the next day. Now I have a D80 LS carrier with 2 busted spiders just taking up room in my shop. Oh...they mega threw his carrier bearing and had to call a trailer!LOL:owned:

Good luck on the new gears 4.88s and 4 lo is the direction I'm headed soon. 3rd low & 3.55's just isn't enuf to win anymore!
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haha this weekend we made three diff shows hooked three diff nights and luckly made it till sat night befor it decided to go lol...... but hey i am i right with 4.88s 4lo to run with 33s for my best wheel speed??? that was wat i was thinkin cuz everybody runs 5.13s with 35s right?? i wanna stay with 33's maybe save some breakage but i was wantin to make sure 4.88s would still let me stay in 4lo some people have tried tellin me thats not enough gear


i was hopein somebody would come in with a little ratio deal so i could see..... i read for about 2 hours yesterday on search and never found wat i wanted to see:doh:
 
4.88s is perfect for 33s you only need 5.13s if you wanna run 35s or BIG rpm with 33s.

3.55+3rd low=16.02 final drive meaning SLOW!
4.88+4th low=13.42 or 13.22 can't remember exactly right now. But its A LOT faster and more rpm. GrimmJeeper.com has a ratio calculator just select NV4500 and NP241 from the drop down bars ;)
 
Ha! Want wheel speed? Try 2nd hi with your 3.54's and 33's. 10.76:1 final drive.
 
Smoke said:
Ha! Want wheel speed? Try 2nd hi with your 3.54's and 33's. 10.76:1 final drive.
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Been there done that....hard to keep an S4 lit....falls under at end of track...oh yeah and = blown HG.:bang:bang:bang:bang
 
Got Smoke? said:
Been there done that....hard to keep an S4 lit....falls under at end of track...oh yeah and = blown HG.:bang:bang:bang:bang
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tried it...... no good 150ft choked out... tracks around here hook preaty hard might could on a realy lose track take some weight off
 
I tried it for S n Gs one night as an exhibition hook after the pull was over had to dump the clutch to keep it lit because R's dropped quick as soon as I started out of the clutch. Pressure spike must have been huge to blow my O ringed HG. It ran like a raped ape tho! Went 10ft farther than my 1st run! But not trying that again, plus hi side is more likely to break.
 
Got Smoke? said:
I tried it for S n Gs one night as an exhibition hook after the pull was over had to dump the clutch to keep it lit because R's dropped quick as soon as I started out of the clutch. Pressure spike must have been huge to blow my O ringed HG. It ran like a raped ape tho! Went 10ft farther than my 1st run! But not trying that again, plus hi side is more likely to break.
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ive done some changes since i tried that lot bigger injector and stuff it might do little better now but not gonna chance it goin on with 4.88s to get that 4lo
 
jones95runner said:
want to pick up some wheel speed...... runnin 33s 3.55s pulling 3lo..... tracks are preaty much sticky around here for the most part.....im thinkin 4.88s and 4lo? somebody correct me if im wrong or would it be cheaper on me to try to find some 35s and stay in 3lo wiht my gears.......or will i be more likely to break then?? busted the carrier in it sat night it was a lsd........ wat i was wonderin should i go on and swap gears out why i have it apart?
Click to expand...

I'm in the exact same boat as you are. I can turn 4200 rpm down the track in 3rd low with my 33" tire ( bout 25mph wheel speed) and I'm way slower than everyone else is. I'm gathering parts now for my swap to 4.88's, should pic up arround 4 mph of wheel speed!

here is a good thread with wheel speed calc's
Gear selection chart-Microsoft Excel - Competition Diesel.Com - Bringing The BEST Together
 
jones95runner said:
tried it...... no good 150ft choked out... tracks around here hook preaty hard might could on a realy lose track take some weight off
Click to expand...

Not sure where here is but I don't think Kentucky has a loose track. I'm RPM limited so short of bouncing off the rev limiter, I have to run 2nd hi. Been running it since '07. Also on what I believe is my 4th trans rebuild since then too. Imagine that. Got an in cab video of 2nd hi in another post so I could see my RPM's down the track as well as other gauges. It doesn't like it but it chugs along for a little while.

I guess I'll be going to 4.10 here soon but if I had my choice I'd like to go to a 4.30 so that for a tighter track i can still run 2nd hi but if I could ever find a somewhat loose track like the ones we used to pull on in Ohio, I could run 4th lo. Still a little high geared but anything would be better than what I have now.
 
Smoke said:
Not sure where here is but I don't think Kentucky has a loose track. I'm RPM limited so short of bouncing off the rev limiter, I have to run 2nd hi. Been running it since '07. Also on what I believe is my 4th trans rebuild since then too. Imagine that. Got an in cab video of 2nd hi in another post so I could see my RPM's down the track as well as other gauges. It doesn't like it but it chugs along for a little while.

I guess I'll be going to 4.10 here soon but if I had my choice I'd like to go to a 4.30 so that for a tighter track i can still run 2nd hi but if I could ever find a somewhat loose track like the ones we used to pull on in Ohio, I could run 4th lo. Still a little high geared but anything would be better than what I have now.
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since when is 6,772 "RPM limited"? LOL
 
94 12valve said:
I'm in the exact same boat as you are. I can turn 4200 rpm down the track in 3rd low with my 33" tire ( bout 25mph wheel speed) and I'm way slower than everyone else is. I'm gathering parts now for my swap to 4.88's, should pic up arround 4 mph of wheel speed!

here is a good thread with wheel speed calc's
Gear selection chart-Microsoft Excel - Competition Diesel.Com - Bringing The BEST Together
Click to expand...

well i got till next weekend to get it done lol truck is already tore down waitin on parts now so guess i'll see how it does! hopefully make a good difference
 
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