Rule#1 if it aint broke dont fix it! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fast71 · 10-16-2003, 10:58 PM

Well I broke rule #1. I decided that I didnt like the gear i had in the rear end(3.73) and I wanted a change . I also thought hum I have replaced just about every peice of the suspension why not rebuild the rear end also so I did the smart thing first I went to my buddy's junk yard and got a rearend out of a 72 modle that had the gear I wanted (3:07) took it to a friend of mine that build rear ends and said build it . The complete bearings and seal ran me about $100.00 and the labor for him was a buddy price of $100.00 so I get home last night from work pull the old and in with the new . After about 2 hours I pulled the stands out from under the truck and went for a drive . How did the drive go ?Not to good! real bad whinning noise . so I parked the 71 and drove the old fathful s10 to work today got back home tonight and pulled the cover off the rear end and I found gold . Little gold particals all in the dope . I'm taking the rear end back tomorrow to see what happened. Life sucks when you brake rule #1
Sorry Just had to gripe a min.

Longhorn Man · 10-16-2003, 11:27 PM

You'll probably hate the 3.07s once you get it back on the road. The only time they are cool is on the freeway. In town they completly suck.

crazy longhorn · 10-16-2003, 11:37 PM

I never did care for the 3.07 gears, 3.73s alway gave more "giddyup". For a good all around gear, a set of 3.42s will give the best of both worlds.....you have good perf, & decent milage. the 4.10s are really low in my longhorn with a 28" tire, but that 6th gear makes up for it on the road. (at 4000rpms, the speedo needle is straight down) crazyL

lukecp · 10-16-2003, 11:44 PM

3.07's do suck bad.....i have them and i hate it. My truck still hauls a$$ with 3.07's....i would LOVE to see what it would do with some 3.73's and a bigger cam

Even on the freeway they aren't that cool......3000rpm gets me about 75mph, and i don't like to push my small block past that 3k mark for hours at a time (fuel mileage drops alot). They are good for 60-70mph confortable crusing w/o overdrive though.

krue · 10-16-2003, 11:45 PM

That should read
"IF IT AIN'T BROKE...FIX IT 'TIL IT IS!!!"

BadAssChevy502 · 10-17-2003, 03:26 AM

has been my motto for several years now

Ps: sorry to hear about your gears.....

71-longbed · 10-17-2003, 06:07 AM

i agree yellow72 .... i dont like to push mine more than 70 for any extended period of time .... my 350 burns alot more oil @70 mph then it does @ 55 or 60

i can deal with having 3.07's .... becuase i hate being passed all the time on the highway...with a 3.73 or 4.11 ... i would be to afraid to rap the engine out that much to keep up with traffic ....

ramble on

fast71 · 10-17-2003, 07:10 AM

Thats why Im changing gears. the freeway is the way I go to work . all the carshows and just daily life so I need a high gear . I know I'm losing take off but I am gaining top end if I get my rearend fixed first.

**1970 CST Short Wide** · 10-17-2003, 09:34 AM

I went with a Currie Ford 9" but didn't want the 3;73 so I went with 3;50 . I love it . Big change from my old 3;07's

jamis · 10-17-2003, 10:15 AM

Quote:

Rule#1 if it aint broke dont fix it!

Then we wouldn't have any modified trucks

NEW RULE #1

If it don't fit force it....if it breaks.... it needed replacing anyway.

fast71 · 10-18-2003, 12:48 AM

Well Its midnight here in Georgia and rear end is back in the truck I will drive it tomorrow and I hope its fixed. The mechanic told me that the new crush sleeve was taller than the org. and it didnt let the outer pinion bearing seat all the way and causing the pinion to walk up and down . I hope that he is right. We installed another new bearing ,the org. crush sleeve and checked the wear pattern and the backlash . I will have udated pics tomorrow also of the new wheeel I put on tonight.

fast71 · 10-18-2003, 10:57 PM

Well I test drove it today . I went about 2 miles round trip and parked it . I have a bad whine on a decell. I thing the pinoin is going to have to be re shimed. Its going to the shop Monday.

cableguy0 · 10-19-2003, 12:43 AM

sounds to me like the backlash is probably too tight

fast71 · 10-19-2003, 09:30 AM

The back lash is perfect . I watched him and he took a dail indicator and measured the back lash . he ran a pattern and he told me it may be noisy on decell and if it was to bring it in Monday .

10-16-2003, 11:37 PM	#3
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	I never did care for the 3.07 gears, 3.73s alway gave more "giddyup". For a good all around gear, a set of 3.42s will give the best of both worlds.....you have good perf, & decent milage. the 4.10s are really low in my longhorn with a 28" tire, but that 6th gear makes up for it on the road. (at 4000rpms, the speedo needle is straight down) crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

10-16-2003, 11:44 PM	#4
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	3.07's do suck bad.....i have them and i hate it. My truck still hauls a$$ with 3.07's....i would LOVE to see what it would do with some 3.73's and a bigger cam Even on the freeway they aren't that cool......3000rpm gets me about 75mph, and i don't like to push my small block past that 3k mark for hours at a time (fuel mileage drops alot). They are good for 60-70mph confortable crusing w/o overdrive though. __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

10-16-2003, 11:45 PM	#5
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	That should read "IF IT AIN'T BROKE...FIX IT 'TIL IT IS!!!" __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

10-17-2003, 03:26 AM	#6
BadAssChevy502 Yeh It's Fast Join Date: Sep 2003 Location: Zwijndrecht ,The Netherlands ,Europe Posts: 143	I totally agree on that one has been my motto for several years now Ps: sorry to hear about your gears..... __________________ (I'm sorry if the spelling isn't correct,i'm trying the best I can ) 1972 C20 3/4 Pickup Fleetside 502ci Th400 Click here to view pictures of my truck 1971 C20 3/4 Pickup Fleetside 350ci 3speed manual gearbox "IF IT AIN'T BROKE DON'T TRY TO FIX IT" Zwijndrecht, The Netherlands Europe

10-17-2003, 06:07 AM	#7
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	i agree yellow72 .... i dont like to push mine more than 70 for any extended period of time .... my 350 burns alot more oil @70 mph then it does @ 55 or 60 i can deal with having 3.07's .... becuase i hate being passed all the time on the highway...with a 3.73 or 4.11 ... i would be to afraid to rap the engine out that much to keep up with traffic .... ramble on __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

10-16-2003, 10:58 PM	#1
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	Rule#1 if it aint broke dont fix it! Well I broke rule #1. I decided that I didnt like the gear i had in the rear end(3.73) and I wanted a change . I also thought hum I have replaced just about every peice of the suspension why not rebuild the rear end also so I did the smart thing first I went to my buddy's junk yard and got a rearend out of a 72 modle that had the gear I wanted (3:07) took it to a friend of mine that build rear ends and said build it . The complete bearings and seal ran me about $100.00 and the labor for him was a buddy price of $100.00 so I get home last night from work pull the old and in with the new . After about 2 hours I pulled the stands out from under the truck and went for a drive . How did the drive go ?Not to good! real bad whinning noise . so I parked the 71 and drove the old fathful s10 to work today got back home tonight and pulled the cover off the rear end and I found gold . Little gold particals all in the dope . I'm taking the rear end back tomorrow to see what happened. Life sucks when you brake rule #1 Sorry Just had to gripe a min. Attached Images __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

10-16-2003, 11:27 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	You'll probably hate the 3.07s once you get it back on the road. The only time they are cool is on the freeway. In town they completly suck.

10-17-2003, 07:10 AM	#8
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	Thats why Im changing gears. the freeway is the way I go to work . all the carshows and just daily life so I need a high gear . I know I'm losing take off but I am gaining top end if I get my rearend fixed first. __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

10-17-2003, 09:34 AM	#9
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,193	I went with a Currie Ford 9" but didn't want the 3;73 so I went with 3;50 . I love it . Big change from my old 3;07's __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

10-18-2003, 12:48 AM	#11
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	Well Its midnight here in Georgia and rear end is back in the truck I will drive it tomorrow and I hope its fixed. The mechanic told me that the new crush sleeve was taller than the org. and it didnt let the outer pinion bearing seat all the way and causing the pinion to walk up and down . I hope that he is right. We installed another new bearing ,the org. crush sleeve and checked the wear pattern and the backlash . I will have udated pics tomorrow also of the new wheeel I put on tonight. __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

10-18-2003, 10:57 PM	#12
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	Well I test drove it today . I went about 2 miles round trip and parked it . I have a bad whine on a decell. I thing the pinoin is going to have to be re shimed. Its going to the shop Monday. __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

10-19-2003, 12:43 AM	#13
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	sounds to me like the backlash is probably too tight __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

10-19-2003, 09:30 AM	#14
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	The back lash is perfect . I watched him and he took a dail indicator and measured the back lash . he ran a pattern and he told me it may be noisy on decell and if it was to bring it in Monday . __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100



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