Hot drag radials and stock Gov-Lock rear = BOOM - The 1947 - Present Chevrolet & GMC Truck Message Board Network

FirstGen · 10-19-2004, 03:16 AM

This is what I did on motor tonight LOL. Launched it easy took it to 6200 and slammed 2nd gear. I thought I left a pile of something behind me. Good thing I was only a few blocks from home. I didn't feel like pulling the pan but it definatly grenaded the locker, put a nice hole in the diff cover and it wouldn't move an inch in just free spins the drive shaft.

Usually trucks pull Camaros. Not tonight hahaha. Actually it's not funny. Anyone got a detroit for sale?

Alexis · 10-19-2004, 03:43 AM

it's all part of the game, i bet you still got a grin out of it.

FirstGen · 10-19-2004, 04:04 AM

I'm kinda surprized it lasted this long!

Project1970 · 10-19-2004, 10:55 AM

Yeah, and it's usually the LS1 Camaros that scatter the rear end all over the place...nice work!

Mudder · 10-19-2004, 11:11 AM

There were 2 different gov-locs that I know of. The first one they came out with was junk. The second one was better junk. I had one in my 12 bolt for several years (better junk) and it lasted until I got rid of the 12 bolt and went to 3/4's. It seen a lot of mud pits and off roading but I wasn't really into hole shots.

**PICKMUP** · 10-19-2004, 11:28 AM

Gov Locs are built to handle S10s.

**StingRay** · 10-19-2004, 11:54 AM

Some of the drag racers I know affectionately refer to them as time bombs

elk hunter · 10-19-2004, 12:08 PM

or my favorite term... junk lock

FirstGen · 10-19-2004, 02:59 PM

hahaha. Couldn't agree more.

gmc67swb · 10-19-2004, 04:35 PM

Were you at one our local tracks?

FirstGen · 10-19-2004, 05:22 PM

Naw I was just "testing" out these new BFG drags around the block. They obviously hook alot harder on the street than my M/T ET streets did. Course they are pretty much monsters at 325/50R15's...

Blazer1970 · 10-19-2004, 06:55 PM

The Gov-lock usually works just fine. The problem is that when you get a lot of tire spin and a lot of torque (with a 10 or 12 bolt) when the locker locks up it breaks the carrier bearing cap bolts and then all hell breaks loose.

LONGHAIR · 10-19-2004, 07:16 PM

I have never seen one grenade the main caps. but I have seen a ton of them explode the "clock works" crap inside. This inturn goes through the ring and pinion, bearings, etc.........
I suppose you could get a big enough piece going through all of this to pop the main caps, but I have never seen it. It certainly wouldn't be the start of the equation.
Gov-Locs are barely adequate for totally stock vehicles driven nicely. Once you introduce more horsepower, a big foot, and/or better traction in the form of bigger tires, they go away quickly.
Actually a stock "open" differential is stronger but you don't get the "posi" effect.
BTW, they do NOT actually "lock" as in a true locker type diff. They are a clutch type unit that has a centrifugal mechanism that controls the pressure to the clutches. It is not supposed to do anything until there is a certain amount of difference between the tire's speed from one side to the other. It also only works below a certain speed. Once the unit's RPMs enguage the centrifugal parts, there is no "lock".

*rage'nrat638* · 10-19-2004, 07:42 PM

here's what you need....
get out your wallet....

Brainchild · 10-19-2004, 09:45 PM

Quote:

Originally Posted by rage'nrat638

here's what you need....
get out your wallet....

Well that is nice.Now my keyboard is shorting ouit from all the drool.Sweet setup

*rage'nrat638* · 10-19-2004, 09:55 PM

Quote:

Originally Posted by Brainchild

Well that is nice.Now my keyboard is shorting ouit from all the drool.Sweet setup

hey it's only money......

were just big kids now.....with big cars and trucks

FirstGen · 10-19-2004, 07:08 PM

well mine broke with NO tire spin and with a hard shift into second!

**FRENCHBLUE72** · 10-19-2004, 07:50 PM

Bummer on the locker guess it's time for an upgrade, like mark's..

FirstGen · 10-19-2004, 07:56 PM

Bring you wallet is right! Nice Setup! 9", QA1's, wilwoods, 4 link, wishbone maybe? you prolly got about what 4.5K in that setup? Wish I was a balla like you hehe.

*rage'nrat638* · 10-19-2004, 08:01 PM

Quote:

Originally Posted by FirstGen

nice. 9", QA1's, wilwoods, 4 link, wishbone maybe? you prolly got about what 4.5K in that setup? Wish I was a balla like you hehe.

yea i was thinking about 5,000.....
but....you want to play you got to pay.....

FirstGen · 10-19-2004, 08:34 PM

Couldn't agree more! Looks great. Eventually I'd like to do a similar setup. Be fun to fabricate it all at home too...

djracer · 10-19-2004, 08:45 PM

I agree you may have to lose the 12 bolt with big power but I wouldn't give up my trailing arms for a 4link. I know for a fact that 67 dragtruck has been as fast as I want to go with trailing arms and coilovers(5.32 eighth mile) on a 10.5w slick I might add!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

GMC AMI · 10-21-2004, 07:51 AM

Quote:

Originally Posted by djracer

I agree you may have to lose the 12 bolt with big power but I wouldn't give up my trailing arms for a 4link. I know for a fact that 67 dragtruck has been as fast as I want to go with trailing arms and coilovers(5.32 eighth mile) on a 10.5w slick I might add!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I would have loved to see that truck burn up the 1/8 track, Great time , what was the speed?

FirstGen · 10-19-2004, 08:57 PM

yeah he's running a 12 bolt too right?

*rage'nrat638* · 10-19-2004, 09:02 PM

just keep in mind that 12 bolt car and truck rear ends are two different beast....totaly

10-19-2004, 03:16 AM	#1
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	Hot drag radials and stock Gov-Lock rear = BOOM This is what I did on motor tonight LOL. Launched it easy took it to 6200 and slammed 2nd gear. I thought I left a pile of something behind me. Good thing I was only a few blocks from home. I didn't feel like pulling the pan but it definatly grenaded the locker, put a nice hole in the diff cover and it wouldn't move an inch in just free spins the drive shaft. Usually trucks pull Camaros. Not tonight hahaha. Actually it's not funny. Anyone got a detroit for sale? Attached Images __________________ 1968 C10 build in process TT LSA/6L90e/9"

10-19-2004, 04:04 AM	#3
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	I'm kinda surprized it lasted this long! __________________ 1968 C10 build in process TT LSA/6L90e/9"

10-19-2004, 10:55 AM	#4
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	Yeah, and it's usually the LS1 Camaros that scatter the rear end all over the place...nice work! __________________ Project1970 - LS1 Swap Complete!

10-19-2004, 11:28 AM	#6
PICKMUP "Trucks with Class" Join Date: Jul 2000 Location: OLYMPIA, WA, USA Posts: 8,125	Gov Locs are built to handle S10s. __________________ Email: frankeham@comcast.net Phone: 360-956-7170

10-19-2004, 11:54 AM	#7
StingRay Senior Member Join Date: Mar 2000 Location: Saskatoon,SK,Canada Posts: 2,476	Some of the drag racers I know affectionately refer to them as time bombs __________________ Saskatoon, Saskatchewan Canada

10-19-2004, 03:43 AM	#2
Alexis Member since 2000 Join Date: Dec 2000 Location: Mountain View Ca / Mexico Posts: 7,879	it's all part of the game, i bet you still got a grin out of it.

10-19-2004, 11:11 AM	#5
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	There were 2 different gov-locs that I know of. The first one they came out with was junk. The second one was better junk. I had one in my 12 bolt for several years (better junk) and it lasted until I got rid of the 12 bolt and went to 3/4's. It seen a lot of mud pits and off roading but I wasn't really into hole shots.

10-19-2004, 12:08 PM	#8
elk hunter Registered User Join Date: Dec 2003 Location: oregon city, or Posts: 164	or my favorite term... junk lock __________________ yeah, but how's it wheel?

10-19-2004, 02:59 PM	#9
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	hahaha. Couldn't agree more. __________________ 1968 C10 build in process TT LSA/6L90e/9"

10-19-2004, 04:35 PM	#10
gmc67swb Registered User Join Date: Feb 2003 Location: Mesquite, Tx Posts: 396	Were you at one our local tracks? __________________ GM 330HP/350, Magnuson 122HH, Tremec TKO 5spd

10-19-2004, 05:22 PM	#11
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	Naw I was just "testing" out these new BFG drags around the block. They obviously hook alot harder on the street than my M/T ET streets did. Course they are pretty much monsters at 325/50R15's... __________________ 1968 C10 build in process TT LSA/6L90e/9"

10-19-2004, 06:55 PM	#12
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	The Gov-lock usually works just fine. The problem is that when you get a lot of tire spin and a lot of torque (with a 10 or 12 bolt) when the locker locks up it breaks the carrier bearing cap bolts and then all hell breaks loose. __________________ Tim

10-19-2004, 07:16 PM	#13
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	I have never seen one grenade the main caps. but I have seen a ton of them explode the "clock works" crap inside. This inturn goes through the ring and pinion, bearings, etc......... I suppose you could get a big enough piece going through all of this to pop the main caps, but I have never seen it. It certainly wouldn't be the start of the equation. Gov-Locs are barely adequate for totally stock vehicles driven nicely. Once you introduce more horsepower, a big foot, and/or better traction in the form of bigger tires, they go away quickly. Actually a stock "open" differential is stronger but you don't get the "posi" effect. BTW, they do NOT actually "lock" as in a true locker type diff. They are a clutch type unit that has a centrifugal mechanism that controls the pressure to the clutches. It is not supposed to do anything until there is a certain amount of difference between the tire's speed from one side to the other. It also only works below a certain speed. Once the unit's RPMs enguage the centrifugal parts, there is no "lock".

10-19-2004, 07:42 PM	#14
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	here's what you need.... get out your wallet.... Last edited by rage'nrat638; 07-12-2007 at 07:05 AM.

10-19-2004, 07:08 PM	#17
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	well mine broke with NO tire spin and with a hard shift into second! __________________ 1968 C10 build in process TT LSA/6L90e/9"



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10-19-2004, 07:50 PM	#18
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,594	Bummer on the locker guess it's time for an upgrade, like mark's.. __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

10-19-2004, 07:56 PM	#19
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	Bring you wallet is right! Nice Setup! 9", QA1's, wilwoods, 4 link, wishbone maybe? you prolly got about what 4.5K in that setup? Wish I was a balla like you hehe. __________________ 1968 C10 build in process TT LSA/6L90e/9" Last edited by FirstGen; 10-19-2004 at 07:59 PM.

10-19-2004, 08:34 PM	#21
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	Couldn't agree more! Looks great. Eventually I'd like to do a similar setup. Be fun to fabricate it all at home too... __________________ 1968 C10 build in process TT LSA/6L90e/9"

10-19-2004, 08:45 PM	#22
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,891	I agree you may have to lose the 12 bolt with big power but I wouldn't give up my trailing arms for a 4link. I know for a fact that 67 dragtruck has been as fast as I want to go with trailing arms and coilovers(5.32 eighth mile) on a 10.5w slick I might add!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-19-2004, 08:57 PM	#24
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	yeah he's running a 12 bolt too right? __________________ 1968 C10 build in process TT LSA/6L90e/9"

10-19-2004, 09:02 PM	#25
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	just keep in mind that 12 bolt car and truck rear ends are two different beast....totaly

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