what? 3.07s! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

low 84 · 03-10-2003, 01:32 AM

well i went and picked up the 12 bolt today. got it home, put it on some stands and poped the cover to count teeth. and it has wimpy 3.07's

i was so hoping that it would have 3.73's and i could swap it in anb burn some rubber. but now i'm just gonna clean it up and set it aside until i can afford to have it redone with lower gears and an eaton posi............sigh. man i really wanted to have it in there this week. oh well, i still think it was worth the price i paid for it.

any body have any idea how much it would cost to set it up with a posi and new gears and whatever else they do (rebuild kit???)

67_SS396 · 03-10-2003, 01:43 AM

Sent PM

Are you having a traction problem now? Do you know for sure what gears you have in your current rearend?

You need to figure out what condition the new rear is in and what needs to be replaced. Since you'll be getting new gears, I would replace all the bearings, which doesn't cost that much for the parts.

low 84 · 03-10-2003, 01:59 AM

well i'm not having a traction problem now, 1 because i think my stall converter is actualy worse than a stock one, lol. and 2 i think i have either 2.73 or 3.08 gears.

i havne't pulled the cover on my 10 bolt so i'm not sure what it has in it.

i really don't start to get in my power band till over 2000 rpm so its a dog of the line with the crappy converter and high gears.

i think i jinxed myself. a couple of hours before i pulled the cover i was tellin my friend how sweet it would be if i pulled the cover and it had 3.42's and a posi. i think it actualy did have that but when i said it out loud the posi and 3.42's automatically disappeared and left crappy spider gears and 3.07's in their place. i should have just kept quite

79BIG10 · 03-10-2003, 04:57 AM

Ryan went I went to Speedtek they quoted me $150 out of truck gear setting and $200 in truck setting the gears. I priced complete rebuild kit and setup shims etc. from Summit (not their brand) for $100. I'll grab the kit and when the time comes I'll get my 3.73 gears and gov-loc installed.

AirMale · 03-10-2003, 07:31 AM

I would buy the ring and pinion kit so you get everything at once ($320). As for the posi, get an Eaton posi. The Eaton posi is fully rebuildable. Call randy's ring and pinion, he has the best prices and advice!
www.ring-pinion.com
Spend the money on the professional set up cause if your rear starts to sing after 500 mi. you can take it back and make them eat the new gears.

**Captkaos** · 03-10-2003, 12:24 PM

I just rebuilt mine last year. Went from 4.10's to 3.08's <grin> (Nash 5 speed)
Got the gears and a master rebuild kit (ALL bearings, seals, shims...) from Randy's for it was around $150 for the gears, about $90 for the master. The Eaton posi was $480 and I had it set up for $100. If I remember correctly, It was around $800 for everything.
Minus the axle shafts, the whole rearend on mine is new.

ElGracho · 03-10-2003, 03:00 PM

I'm in the middle of rebuilding the rear axle (12 bolt) in my 84 K10. I bought my setup kit from 4wheelparts wholesalers for around $80. It includes shims, timken bearings and races, crush sleeve, pinion nut and gasket. I bought my gears (3.73) and detroit truetrac from Randy's Ring and Pinion. I have also bought the tools I need to set it up (20 ton press, bearing remover, dial indicator and base, and dial caliper) for less than what the cheapest local shop wanted to for setting one up (around$350). I have three to do so I figured I would learn.

Of interest, if your gears wear out, to some extent even if it is your fault, Randy's will replace them if you buy from them. Great company to deal with.

Tom · 03-10-2003, 03:43 PM

Im putting a full locker and 4.10's in my 78 within a few months and it should run me about $500-600 total. You guys and your 3.73's

LOHRTBT · 03-10-2003, 04:26 PM

See how far those 4:10's get you on a highway roll start from 65 mph!

low 84 · 03-11-2003, 02:46 AM

Quote:

Originally posted by Tom
Im putting a full locker and 4.10's in my 78 within a few months and it should run me about $500-600 total. You guys and your 3.73's

i drove 4.10's with a th350 every day for a year in my 64' with 28 inch tall tires. i know yours isn't a daily driver if it was youd get sick of it, been there, got 7.5 mpg, done that.

thanks for the help guys.

Izzy · 03-11-2003, 09:12 AM

Shock eyes beware.

low 84 · 03-11-2003, 01:55 PM

Quote:

Originally posted by fiveeightchevy
Shock eyes beware.

lmao

Tom · 03-11-2003, 03:05 PM

Quote:

Originally posted by LOHRTBT
See how far those 4:10's get you on a highway roll start from 65 mph!

highway, are you kidding? 1/4mile and sunday cruises only my man!

84Stepper · 03-11-2003, 05:55 PM

I want gears so bad!!!!!! My truck sucks of the line cause of the 273's. I wanna get 342's and a eaton possi. I'm guessing around 800$ installed?

86k10 · 03-11-2003, 11:59 PM

Hey I love my 4.10's, used to have 3.08 and would average around 15 mpg. Now it's around 16 mpg and still only runs around 2200 at 75mph. It's the best of both worlds, low end muscle and can still cruise with the best of them.

*1FaastC10* · 03-12-2003, 01:53 AM

86K10, did you install different tires as well?

low 84 · 03-12-2003, 02:18 AM

Quote:

Originally posted by 1FaastC10
86K10, did you install different tires as well?

check his sig, he has a 700r4

with a th350 i'd prbly push 3200 or more at 75, lol

86k10 · 03-12-2003, 08:18 PM

Yeh I did, went to 16". that's where the (now K20) comes in. But they are only about an inch taller than the 31 10.50's I had before. I'm really enjoying the change from 3.08 to 4.10, and with the massive ole horse I have under the hood, it really makes good use of them.

03-10-2003, 01:32 AM	#1
low 84 Registered User Join Date: Jan 2002 Location: Houston, TX Posts: 2,144	what? 3.07s! well i went and picked up the 12 bolt today. got it home, put it on some stands and poped the cover to count teeth. and it has wimpy 3.07's i was so hoping that it would have 3.73's and i could swap it in anb burn some rubber. but now i'm just gonna clean it up and set it aside until i can afford to have it redone with lower gears and an eaton posi............sigh. man i really wanted to have it in there this week. oh well, i still think it was worth the price i paid for it. any body have any idea how much it would cost to set it up with a posi and new gears and whatever else they do (rebuild kit???) __________________ '51 F100, backhalf with a narrowed 9 and coil overs, 18.5" mickeys, monte front clip, +400" sbc in the works '05 1500 Crew Cab RIP '84 swb 5/7 drop, solid cammed 408 w/ fully ported dart heads, th350 w/ 10 inch hughes, 12 bolt w/ 3.73 richmonds and a locker '80 swb 4x4 in progress: 7" lift, 350 th350/np205, d44 and 1.5" ORD tie rod, 14BFF w/discs , armored diff covers, 40" MTR's

03-10-2003, 01:43 AM	#2
67_SS396 Registered User Join Date: Mar 2000 Location: Blue Ridge, Tx Posts: 1,172	Sent PM Are you having a traction problem now? Do you know for sure what gears you have in your current rearend? You need to figure out what condition the new rear is in and what needs to be replaced. Since you'll be getting new gears, I would replace all the bearings, which doesn't cost that much for the parts. __________________ Fawker Fab three seater rock crawler buggy 498 BBC/SM465/203/205 doubler, propane, 5.13's, 42" PB Rockers '66 C10 - The new hot rod '77 3+3 Dually - 12 valve 4wd conversion tow rig project '28 Ford 2 door sedan street rod RevLimit Offroad "Hang on beer, we can do this."

03-10-2003, 01:59 AM	#3
low 84 Registered User Join Date: Jan 2002 Location: Houston, TX Posts: 2,144	well i'm not having a traction problem now, 1 because i think my stall converter is actualy worse than a stock one, lol. and 2 i think i have either 2.73 or 3.08 gears. i havne't pulled the cover on my 10 bolt so i'm not sure what it has in it. i really don't start to get in my power band till over 2000 rpm so its a dog of the line with the crappy converter and high gears. i think i jinxed myself. a couple of hours before i pulled the cover i was tellin my friend how sweet it would be if i pulled the cover and it had 3.42's and a posi. i think it actualy did have that but when i said it out loud the posi and 3.42's automatically disappeared and left crappy spider gears and 3.07's in their place. i should have just kept quite __________________ '51 F100, backhalf with a narrowed 9 and coil overs, 18.5" mickeys, monte front clip, +400" sbc in the works '05 1500 Crew Cab RIP '84 swb 5/7 drop, solid cammed 408 w/ fully ported dart heads, th350 w/ 10 inch hughes, 12 bolt w/ 3.73 richmonds and a locker '80 swb 4x4 in progress: 7" lift, 350 th350/np205, d44 and 1.5" ORD tie rod, 14BFF w/discs , armored diff covers, 40" MTR's

03-10-2003, 04:57 AM	#4
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	Ryan went I went to Speedtek they quoted me $150 out of truck gear setting and $200 in truck setting the gears. I priced complete rebuild kit and setup shims etc. from Summit (not their brand) for $100. I'll grab the kit and when the time comes I'll get my 3.73 gears and gov-loc installed. __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

03-10-2003, 07:31 AM	#5
AirMale Senior Member Join Date: Jan 2003 Location: Atlantic City, NJ Posts: 1,073	I would buy the ring and pinion kit so you get everything at once ($320). As for the posi, get an Eaton posi. The Eaton posi is fully rebuildable. Call randy's ring and pinion, he has the best prices and advice! www.ring-pinion.com Spend the money on the professional set up cause if your rear starts to sing after 500 mi. you can take it back and make them eat the new gears. __________________ 86 SWB 9.0 LITER T-400-OD 4.11 eaton-4/5 drop Best 1/4 12.51 @112mph no traction

03-10-2003, 12:24 PM	#6
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	I just rebuilt mine last year. Went from 4.10's to 3.08's <grin> (Nash 5 speed) Got the gears and a master rebuild kit (ALL bearings, seals, shims...) from Randy's for it was around $150 for the gears, about $90 for the master. The Eaton posi was $480 and I had it set up for $100. If I remember correctly, It was around $800 for everything. Minus the axle shafts, the whole rearend on mine is new. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

03-10-2003, 03:00 PM	#7
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,553	I'm in the middle of rebuilding the rear axle (12 bolt) in my 84 K10. I bought my setup kit from 4wheelparts wholesalers for around $80. It includes shims, timken bearings and races, crush sleeve, pinion nut and gasket. I bought my gears (3.73) and detroit truetrac from Randy's Ring and Pinion. I have also bought the tools I need to set it up (20 ton press, bearing remover, dial indicator and base, and dial caliper) for less than what the cheapest local shop wanted to for setting one up (around$350). I have three to do so I figured I would learn. Of interest, if your gears wear out, to some extent even if it is your fault, Randy's will replace them if you buy from them. Great company to deal with. __________________ Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed

03-10-2003, 03:43 PM	#8
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,748	Im putting a full locker and 4.10's in my 78 within a few months and it should run me about $500-600 total. You guys and your 3.73's __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

03-10-2003, 04:26 PM	#9
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	See how far those 4:10's get you on a highway roll start from 65 mph! __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

03-11-2003, 09:12 AM	#11
Izzy Trucker. Join Date: Nov 2002 Location: Fort Worth, TX Posts: 1,364	Shock eyes beware.

03-11-2003, 05:55 PM	#14
84Stepper Registered User Join Date: Feb 2003 Location: Edmond, Oklahoma Posts: 425	I want gears so bad!!!!!! My truck sucks of the line cause of the 273's. I wanna get 342's and a eaton possi. I'm guessing around 800$ installed? __________________ 84 Chevy Stepside, 350, TH350, 268h Comp cam, Hooker headers, MSD Pro Billet, Edelbrock Performer manifold and 1604 carb, 40 Series Flowmasters dumped, and Western Chassis 3/5 drop w/ c notch. New 3:73 Eaton Posi

03-11-2003, 11:59 PM	#15
86k10 Registered User Join Date: Feb 2003 Location: Bertrand, Nebraska Posts: 355	Hey I love my 4.10's, used to have 3.08 and would average around 15 mpg. Now it's around 16 mpg and still only runs around 2200 at 75mph. It's the best of both worlds, low end muscle and can still cruise with the best of them. __________________ 98 Neon 97 Grand Prix GT 02 Grand Prix 40th Anniv. 86 GMC 5.0 77 Olds 98 6.6 REAL AMERICANS, DRIVE AMERICAN

03-12-2003, 01:53 AM	#16
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	86K10, did you install different tires as well?

03-12-2003, 08:18 PM	#18
86k10 Registered User Join Date: Feb 2003 Location: Bertrand, Nebraska Posts: 355	Yeh I did, went to 16". that's where the (now K20) comes in. But they are only about an inch taller than the 31 10.50's I had before. I'm really enjoying the change from 3.08 to 4.10, and with the massive ole horse I have under the hood, it really makes good use of them. __________________ 98 Neon 97 Grand Prix GT 02 Grand Prix 40th Anniv. 86 GMC 5.0 77 Olds 98 6.6 REAL AMERICANS, DRIVE AMERICAN



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.