4l or 4h - Pirate4x4.Com : 4x4 and Off-Road Forum

xxxjeep jake · 08-08-2009, 12:01 AM

I'm running in some mud drags this up coming weekend. I usually run 4L in 3rd or 4th gear(it's a 5sp) I was thinking of running in 4H though what do you guys recommend.

it's a 04 TJ with 5:13 gears, a 4.3:1 atlas, 36" iroks.

trkklr77 · 08-08-2009, 12:22 AM

4h and 1rst.

its a question of power vrs power band vrs length of track vrs ratio.

ie: far end of the track [150'+/-] and you hit the red line,good.

half pass and you hit red line. wasted rpm/wheel speed.

let the clutch outand it bogs down you wont get the momentum needed if its deep, wont hit be red lined a the end, not enough wheel speed.

xxxjeep jake · 08-08-2009, 12:39 AM

I don't think I'll make it to the end of the track. Last year there was plenty of guys runnin 40+ in tires that didn't make it.

Hillbilly Rockstar · 08-08-2009, 05:02 AM

If you're runnin the 4.0L you'll likely wanna use 4L, pick the highest gear that you can launch in and feel it out from there. If it ends up being not too thick and you're cruisin it pretty easy then ya might wanna try 4HI

xxxjeep jake · 08-08-2009, 10:59 AM

thanks guys

LegendKiller89 · 08-08-2009, 08:09 PM

I'd run 4L to start but if it ain't bad shift it to 4H.

Red Chevy · 08-09-2009, 02:26 PM

I would find the gear ratio's for my transmission and see what gear in hi matches what gear I was running low with that 4to1 atlas and go from there.

08-08-2009, 12:01 AM	#1 (permalink)
xxxjeep jake Registered User Join Date: Aug 2006 Member # 77789 Location: chicago Posts: 353	4l or 4h I'm running in some mud drags this up coming weekend. I usually run 4L in 3rd or 4th gear(it's a 5sp) I was thinking of running in 4H though what do you guys recommend. it's a 04 TJ with 5:13 gears, a 4.3:1 atlas, 36" iroks.

08-08-2009, 12:22 AM	#2 (permalink)
trkklr77 skullfuckery Join Date: Apr 2004 Member # 29016 Location: galt ca, because i wanted my own backyard Posts: 15,236	4h and 1rst. its a question of power vrs power band vrs length of track vrs ratio. ie: far end of the track [150'+/-] and you hit the red line,good. half pass and you hit red line. wasted rpm/wheel speed. let the clutch outand it bogs down you wont get the momentum needed if its deep, wont hit be red lined a the end, not enough wheel speed. __________________ Impeach or revolt, which will it be? buy my quad http://www.pirate4x4.com/forum/vehic...00-2500-a.html I WILL TRADE FOR A ROAD WORTHY 55-57 or 71-87 CHEVY 2WD PICK UP

08-09-2009, 02:26 PM	#7 (permalink)
Red Chevy Oilfield Trash Join Date: Jan 2006 Member # 64526 Location: Many, Louisiana Posts: 1,512	I would find the gear ratio's for my transmission and see what gear in hi matches what gear I was running low with that 4to1 atlas and go from there. __________________ '91 k3500, 454, 4speed, 42" R-1's no lift '97 z-71, 3" BL, 38" tsl radial, 454/th400 '97 tj, 2.5/auto, rubi 44/5.13/spartan, 8.8/5.13/spool, 34/10.50/16 ltb

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08-08-2009, 12:39 AM	#3 (permalink)
xxxjeep jake Registered User Join Date: Aug 2006 Member # 77789 Location: chicago Posts: 353	I don't think I'll make it to the end of the track. Last year there was plenty of guys runnin 40+ in tires that didn't make it.

08-08-2009, 05:02 AM	#4 (permalink)
Hillbilly Rockstar Registered User Join Date: Jul 2009 Member # 138463 Posts: 138	If you're runnin the 4.0L you'll likely wanna use 4L, pick the highest gear that you can launch in and feel it out from there. If it ends up being not too thick and you're cruisin it pretty easy then ya might wanna try 4HI

08-08-2009, 10:59 AM	#5 (permalink)
xxxjeep jake Registered User Join Date: Aug 2006 Member # 77789 Location: chicago Posts: 353	thanks guys

08-08-2009, 08:09 PM	#6 (permalink)
LegendKiller89 Registered User Join Date: Jan 2009 Member # 128238 Posts: 770	I'd run 4L to start but if it ain't bad shift it to 4H.