4-6" lift kit & drag racing

jonathancasey19

jonathancasey19

yepppp
Sep 10, 2008
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Morehead City, North Carolina
For those of you running a 4-6" lift kit who drag race, what needs to be done besides lowering front end all the way and pulling rear blocks? Do I need limiting straps? Spring clamps? I don't have traction bars. Whole front end is beefed up. Haven't made a pass on this lift kit. Makes me a bit nervous.

I've made one soft 4wd launch and the front end lifted to the moon with Bilstein 5100's. Felt abnormal. I'm sure there was plenty of tire toe-in. That's got to kill your 60'.
 
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custom8726

custom8726

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Feb 25, 2008
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What do you have done to your front end currently? I just lower the front all the way down, clamp the springs, crank the Rancho 9000's to there hardest setting and go! I'm only running 2" blocks and never felt the need to remove them.
 
D

Dragonsfireloki

New member
Nov 6, 2011
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North Dakota
Dont do it without traction bars. My truck wasnt even cranked up that high and the axle wrap caused the lift block to shoot out, destroyed the driver side of my bed, my driveline and yoke. Granted my lift blocks were worn a little, but traction bars are cheap insurance against that damage.
 
jonathancasey19

jonathancasey19

yepppp
Sep 10, 2008
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Morehead City, North Carolina
I'm running stock front driveshaft. Front end has Cognito HD tie-rods, support brace kit, t-case brace. I would remove 2.5" rear blocks to eliminate axle wrap. Wondering if I'll be okay without traction bars.

Best 60' before lift kit was 1.76 on Cooper Discoverer STT mud tires.

Currently running 285/75 Falken Wildpeak A/T's on pyo's.
 
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sweetdiesel

sweetdiesel

That's better
Aug 6, 2006
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Swisstyphoon said:
Which front propshaft are you using? Stock or aftermarked dual cardan?
My cognito shaft snapped!
I also had to install traction bars, had bad axle wrap with the Deaver leaf springs.
Click to expand...

I dunno I made close to 50 passes with my lly without issue had duel cp3s htt turbo .....6" deavers and just lowerd the front end. I would cut low 1.7s with the mud terrains.never a issueof broken parts? I used the cognito front shaft and only added thing for racing was the clamps
 
Chevy1925

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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Phoenix Az
jonathancasey19 said:
Nick @ Norcal (sold me Cognito 4-6" NTBD) warned me of extreme front driveshaft vibration in 4wd above 35 mph. Tried to sell me an aftermarket shaft around $450.00.

Do any of you experience vibration in front shaft?
Click to expand...

everytime i left off the throttle! lol it seems to be hit or miss on the 4-6" lifted truck.

If it helps, ive had mine lifted for the last 6-7 years and still running the stock front drive shaft. its also been down the strip many times with and without traction bars. just make sure your u-bolts are tight. I think your over thinkin the lifted part of the truck. as long as you drop the front like every one else has to, you will be just fine. i made many passes without strapping the front too till my previous time to the track.

make sure your idler/pitman arm show no signs of wear, your tie rods are good, lower the front and go have fun. dont try to be the fastest off the bat, take your time to understand how the truck reacts at higher or lower boosted launches and have fun with it.
 
jacobdewey

jacobdewey

This won't last long...
Jan 14, 2011
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jonathancasey19 said:
I need to go practice. T-bars are cranked a bit but CV angles look flat. Maybe they would be okay for a soft launch. I hate having to let them all the way. Just paid $60 for an alignment.
Click to expand...

Just mark where the bolt's are, as long as you get them back to the same place when you're done racing alignment shouldn't be an issue. With your front end lifting like you say it does, I would lower the bars all the way, so you actually have a negative angle on your cv's, that way when you launch and the front end lifts, the cv's will be level like they are supposed to be.:thumb:
 
Swisstyphoon

Swisstyphoon

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Jan 2, 2010
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Ft. Lauderdale FL/Switzerland
sweetdiesel said:
I dunno I made close to 50 passes with my lly without issue had duel cp3s htt turbo .....6" deavers and just lowerd the front end. I would cut low 1.7s with the mud terrains.never a issueof broken parts? I used the cognito front shaft and only added thing for racing was the clamps
Click to expand...

I guess you just got lucky, my Cognito front driveshaft was holding up also for about 40 passes. But then it just snapped.
My axle wrap was so bad that the rear driveshaft was hitting the yoke.
But I didnt have spring clamps or anything at that time.
 
ecc_33

ecc_33

Junior Member
Aug 10, 2006
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im running a TC 4inch lift and just crank the T bars down with my traction bars out back. I cut 1.67's all day long on 33" Toyo AT's and run 11.60's
 
sweetdiesel

sweetdiesel

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Aug 6, 2006
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Swisstyphoon said:
I guess you just got lucky, my Cognito front driveshaft was holding up also for about 40 passes. But then it just snapped.
My axle wrap was so bad that the rear driveshaft was hitting the yoke.
But I didnt have spring clamps or anything at that time.
Click to expand...

I guess I did get lucky...that doesnt happen very often:rofl: sorry to hear yours broke. what did u replace it with?
 
adeso

adeso

wait, what?
May 30, 2011
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Minot, ND
I would really run something in the back, you have a lot of leverage against you with that lift not to have trac bars. If it is aligned with some lift on the T bars, that is fine just lower then all the way down at the track (but bring a jack to take some weight off so you can put it back). I run a straight centerlink with the 9000xls and have no issues with it, never got that great of a 60 but always had poor track prep. start soft and work your way up off the line
 
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