Couple runs with the new Auto setup

Foose04 · 11-23-2010, 12:05 AM

Hey guys, as some of you know the trucks running an auto now. Real happy with the swap. 4L80e is a heavy girl, but so far so good.

Girlfriend caught some video of my first two runs. After some research i'm currently 2nd fastest stock block 4.8L/truck. Fastest to date is 11.0, so i'm going to do my best to snag it and be the first in the 10's. Wish me luck!

http://www.youtube.com/watch?v=2nUJL5ObyR8

BigdaddyDupree · 11-23-2010, 12:18 AM

so what kind of traction device do you have? congrats man

Mike · 11-23-2010, 12:30 AM

Awesome truck!

minytrker · 11-23-2010, 12:53 AM

Thats very impressive for a 4.8.

Harry · 11-23-2010, 08:19 AM

Cool. Looked good the other night.

Derek · 11-23-2010, 09:28 AM

That thing was moving! To bad they didn't let us get that last run in.

jmd · 11-23-2010, 03:47 PM

man that truck is moving.

Foose04 · 11-23-2010, 06:29 PM

Thanks guys, it's been fun playing with it. BDdupree, nothing much, Eaton True-Trac, stock 3.73's, cal-tracs, strut extenders on rear and lakewood struts up front.

BigdaddyDupree · 11-23-2010, 07:41 PM

caltracs seem to be the trick to 60 footing on leaf springs.

ASkipper · 11-23-2010, 09:34 PM

Quote:

Originally Posted by Foose04

Thanks guys, it's been fun playing with it. BDdupree, nothing much, Eaton True-Trac, stock 3.73's, cal-tracs, strut extenders on rear and lakewood struts up front.

Good Luck with that Tru Trac. I broke mine last year and went to a full spool in my 12 bolt. I have heard nothing but problems with them breaking.

Foose04 · 11-23-2010, 10:05 PM

You running a stick car or auto? So far I love the engagment of the rear, we'll see how far it goes slinging this rig around.

blkscls1z · 11-23-2010, 11:24 PM

Truck looked good and runs great!

chrisheltra · 11-24-2010, 07:26 AM

Quote:

Originally Posted by BigdaddyDupree

caltracs seem to be the trick to 60 footing on leaf springs.

Its been my experience on trucks with leafs caltracs are only good to around 500rwhp but that's also dependent on a lot of factors.

Quote:

Originally Posted by ASkipper

Good Luck with that Tru Trac. I broke mine last year and went to a full spool in my 12 bolt. I have heard nothing but problems with them breaking.

I had to replace my TT also and went with a Locker.

ASkipper · 11-24-2010, 08:41 AM

Quote:

Originally Posted by Foose04

You running a stick car or auto? So far I love the engagment of the rear, we'll see how far it goes slinging this rig around.

I got an auto. I started noticing what I thought was wheel hop. It turned out to be the Tru Trac. Something in the way it was engaging while taking off with the slicks. I guess it just could not take the 1.4 60's. I called Eaton about it thinking that they would stand behind it and they said that it was designed to be an off road diff. and not a race diff. I then asked them why they made them to go in the 12 bolts and ford 9" for drag racing. DUH.

here are some pics of the damage.

I was still able to drive mine. I stopped before making a run as the driver side wheel would not engage. It had a popping in it. If I would have made the run there is no telling what king of damage it would have done.

Illusions · 11-24-2010, 09:24 AM

Quote:

Originally Posted by chrisheltra

Its been my experience on trucks with leafs caltracs are only good to around 500rwhp but that's also dependent on a lot of factors.

I know many s10's pushing well over 500hp that use Caltracs with good results. One of them runs at Bowman and is a good friend of Lxtasy's and mine.

BigdaddyDupree · 11-24-2010, 09:44 AM

randy showed me a pic of the longbars and how they work moving the instant center and i am toying around with the idea now

Mike · 11-24-2010, 10:02 AM

Quote:

Originally Posted by ASkipper

I got an auto. I started noticing what I thought was wheel hop. It turned out to be the Tru Trac. Something in the way it was engaging while taking off with the slicks. I guess it just could not take the 1.4 60's.

My old truck had a tru trac in it. I never had a problem out of it, cutting 1.4x 60's @ 4850lbs. I wonder if the wheel hop was before the differential gave out, and if that could of contributed to the failure.

chrisheltra · 11-24-2010, 10:07 AM

Quote:

Originally Posted by Illusions

I know many s10's pushing well over 500hp that use Caltracs with good results. One of them runs at Bowman and is a good friend of Lxtasy's and mine.

Like I said many factors contribute to the caltracs success or failure. The weight difference between a S10 and a full size truck could be one of them. All I can say is there were two local trucks that everybody here knows that the caltracs didnt work on.

DolSVT00 · 11-24-2010, 11:08 AM

Quote:

Originally Posted by chrisheltra

Like I said many factors contribute to the caltracs success or failure. The weight difference between a S10 and a full size truck could be one of them. All I can say is there were two local trucks that everybody here knows that the caltracs didnt work on.

If you read around, any truck has problem's with cal trac's. The stiffer the spring, the farther you can go with them, the softer, the earlier they will show you their weakness. It also depends on weight, the heavier the front, the worse it is.

Their design unloads the wrap onto the tires and hits them back with the force of the axle, its called anti-squat, and coupled with a light rear end of a truck becomes an unloading problem.

I had this problem and got it fixrd with longer bars that actually mount to the frame, adjustable shocks didn't help, I even tried adding load leaf's to stiffen up my springs, nothing worked till I threw the cal-tracs in the trash.

Again, they were fine in the 1.6-1.7 60 ft range, but once I started cutting mid 1.5's they would unload.

chrisheltra · 11-24-2010, 11:16 AM

Quote:

Originally Posted by DolSVT00

If you read around, any truck has problem's with cal trac's. The stiffer the spring, the farther you can go with them, the softer, the earlier they will show you their weakness. It also depends on weight, the heavier the front, the worse it is.

Their design unloads the wrap onto the tires and hits them back with the force of the axle, its called anti-squat, and coupled with a light rear end of a truck becomes an unloading problem.

I had this problem and got it fixrd with longer bars that actually mount to the frame, adjustable shocks didn't help, I even tried adding load leaf's to stiffen up my springs, nothing worked till I threw the cal-tracs in the trash.

Again, they were fine in the 1.6-1.7 60 ft range, but once I started cutting mid 1.5's they would unload.

I also had similar problems to what Randy had.

11-23-2010, 12:05 AM	#1
Foose04 Senior Member Join Date: Feb 2010 Posts: 965	Couple runs with the new Auto setup Hey guys, as some of you know the trucks running an auto now. Real happy with the swap. 4L80e is a heavy girl, but so far so good. Girlfriend caught some video of my first two runs. After some research i'm currently 2nd fastest stock block 4.8L/truck. Fastest to date is 11.0, so i'm going to do my best to snag it and be the first in the 10's. Wish me luck! http://www.youtube.com/watch?v=2nUJL5ObyR8 __________________ 12 GMC Denali HD: 4x4, 12" Bullet Proof, 24x12 American Forces, 40x15.50 Toyo M/T's, h&s mini max, deleted, 5" axle dump, S&B intake,tractions bars, air bags. 04 GMC 1500RST: TMS Iron 347/S480/4l80E - 9.63@143.22 05 GMC 2500HD: LLY@372HP/669TQ, 4x4, 8" FabTech, 4.56 gears & 37" Toyo M/T's

11-23-2010, 12:18 AM	#2
BigdaddyDupree Senior Member Join Date: Jul 2008 Location: MACEDONIA Posts: 4,967	so what kind of traction device do you have? congrats man __________________ . What you wanna do?

11-23-2010, 12:53 AM	#4
minytrker Senior Member Join Date: May 2008 Posts: 1,089	Thats very impressive for a 4.8. __________________ 1999 Z28 Camaro\|Cut up 2003 CC Duramax Dually\|19.5 w/245/70/19.5\|5in exhaust 2009 G8 GT 408hp/402tq sae\|Rotofab CAI\|LS9 Cam\|Headers\|GXP Mufflers\|Custom System 2009 Tahoe stock

11-23-2010, 09:28 AM	#6
Derek Senior Member Join Date: Nov 2009 Location: West of the mutha f**cking Ashley Posts: 1,784	That thing was moving! To bad they didn't let us get that last run in. Last edited by Derek; 11-23-2010 at 09:37 AM.

11-23-2010, 03:47 PM	#7
jmd Senior Member Join Date: May 2008 Posts: 3,177	man that truck is moving. __________________ Cadillac man

11-23-2010, 12:30 AM	#3
Mike Senior Member Join Date: Dec 2006 Location: Goose Creek, SC Posts: 5,481	Awesome truck!

11-23-2010, 08:19 AM	#5
Harry Senior Member Join Date: May 2008 Location: Summerville Posts: 3,321	Cool. Looked good the other night.

11-23-2010, 06:29 PM	#8
Foose04 Senior Member Join Date: Feb 2010 Posts: 965	Thanks guys, it's been fun playing with it. BDdupree, nothing much, Eaton True-Trac, stock 3.73's, cal-tracs, strut extenders on rear and lakewood struts up front. __________________ 12 GMC Denali HD: 4x4, 12" Bullet Proof, 24x12 American Forces, 40x15.50 Toyo M/T's, h&s mini max, deleted, 5" axle dump, S&B intake,tractions bars, air bags. 04 GMC 1500RST: TMS Iron 347/S480/4l80E - 9.63@143.22 05 GMC 2500HD: LLY@372HP/669TQ, 4x4, 8" FabTech, 4.56 gears & 37" Toyo M/T's

11-23-2010, 07:41 PM	#9
BigdaddyDupree Senior Member Join Date: Jul 2008 Location: MACEDONIA Posts: 4,967	caltracs seem to be the trick to 60 footing on leaf springs. __________________ . What you wanna do?

11-23-2010, 10:05 PM	#11
Foose04 Senior Member Join Date: Feb 2010 Posts: 965	You running a stick car or auto? So far I love the engagment of the rear, we'll see how far it goes slinging this rig around. __________________ 12 GMC Denali HD: 4x4, 12" Bullet Proof, 24x12 American Forces, 40x15.50 Toyo M/T's, h&s mini max, deleted, 5" axle dump, S&B intake,tractions bars, air bags. 04 GMC 1500RST: TMS Iron 347/S480/4l80E - 9.63@143.22 05 GMC 2500HD: LLY@372HP/669TQ, 4x4, 8" FabTech, 4.56 gears & 37" Toyo M/T's

11-23-2010, 11:24 PM	#12
blkscls1z Senior Member Join Date: Jun 2008 Location: Between Goose Creek & Moncks Corner Posts: 2,310	Truck looked good and runs great! __________________

11-24-2010, 09:44 AM	#16
BigdaddyDupree Senior Member Join Date: Jul 2008 Location: MACEDONIA Posts: 4,967	randy showed me a pic of the longbars and how they work moving the instant center and i am toying around with the idea now __________________ . What you wanna do?