changing to 5 lug axles - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Iron-Butt · 10-24-2002, 08:11 PM

Can just change the axles from 6 lug to 5 lug axles without changing the complete rear end?

chevy lover · 10-24-2002, 08:30 PM

I did without any trouble yet. I found a '72 in the local scrape yard and got the rear. Pulled the axles out and swapped them into the rear of my truck. I would make sure it is the same type of rear, ie. 12 or 10.

truckman32 · 01-16-2003, 07:35 AM

at www.stovebolt.com they have some info on this axle change but my advice is to go to a junkyard and match them up if there the same length and the teeth are the same then you got your answer

jayssunm · 04-23-2003, 07:20 PM

When you say 10 bolt or 12 bolt what are you refering to? My best guess is the cover bolts.

truckman32 · 04-23-2003, 08:01 PM

Donor Rear End Measurements

60-61 inches > 64-69 1/2 ton 2wd Chevy truck/ Some GMC 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70

62 inches > 64-77 Chevelle, 73-76 Torino, 89 Trans Am,

70 2wd truck 6 lug rear end 12 bolt Possible gear ratio's 3:08, 3:40, 3:73
70-81 4wd 6 lug reared ...............................................................

71- Newer 2wd trucks use a 5 on 5 lug pattern
71-76 Full Size Cars " "" ""
i have heard of the 5 lug axle swap on the 70 they used a 71-?

chevy lover · 04-24-2003, 08:09 AM

3.70 that is what mine is. but I'm looking to find a posi carrier for 4.11's. so if anybody has a 12 bolt carrier I can put 4.11 gears on let me know(as if anybody wants to get rid of them)

truckman32 · 04-24-2003, 07:28 PM

chevy lover.. what year is your truck

chevy lover · 04-24-2003, 08:31 PM

68 chevy 1/2 ton swb

truckman32 · 04-24-2003, 09:05 PM

refering to the axle swap that ironbuttlcmc was asking about on his 63... the swap you did on your 69 truck leads me to believe that your 69 must of had a 6lug 70 model rearend put in it at some time because the 72 axels would of been to long for your 69 rear but the 70"s model rearend is the same lenth as the 72 you purchased at the scrapyard the 72 rearends are 62" long and the 69 should be the same as my 66 60" or 61" the 70's model rearends and the 69 rearends look just a like since they are both 6 lugs just 1 or 2 inches difference i will measure my 66 c10 and let you know for sure,you might want to measure your truck i will ask around here in ky to help ya find them 411 gears ..........i need a 62 truck door

Blue Beard · 04-24-2003, 09:36 PM

truckman32

That site has some good information on it..........thanks...........

Iron-Butt · 04-25-2003, 05:36 PM

I changed out the complete rear end for a 1971 5 lug. I went with a 307 gear since I have been running the 250 6 cyl and 200r overdive tranny. I get great gas mileage and it has great cruising speed on the highway.

truckman32 · 04-25-2003, 07:07 PM

glad to see you got your 5 lug rearend the way you wanted if i can be of anymore help give me a hollar

10-24-2002, 08:11 PM	#1
Iron-Butt 454 club Join Date: Oct 2002 Location: Oklahoma Posts: 1,348	changing to 5 lug axles Can just change the axles from 6 lug to 5 lug axles without changing the complete rear end? __________________ David 1965 Chevrolet c-10 454 automatic Custom bbw swb. 1965 Chevrolet C-10 swb (Sold) 1963 Chevrolet C-10 6 Cyl automatic with dual exhaust, pb, ps and 17's. R.I.P "I will miss you. 1967 Chevrolet C-10 6 Cyl Custom lwb 1939 Chevrolet Coupe, 350 v8 automatic. 1935 Chevrolet 2 Dr Standard in the works. 2015 Harley Davidson Street Glide. 2023 Chevrolet Stingray Z51 Convertible. I never want to grow up.

01-16-2003, 07:35 AM	#3
truckman32 AND HOLDING ON TO THE C10 Join Date: Jan 2003 Location: MT.STERLING,KY Posts: 390	at www.stovebolt.com they have some info on this axle change but my advice is to go to a junkyard and match them up if there the same length and the teeth are the same then you got your answer __________________ 66 swb/ss chevy c10 SOLD 62 swb/fs chevy c10 :p SOLD 84 swb/fs chevy c10 91 sdime 383/th350

04-23-2003, 07:20 PM	#4
jayssunm Registered User Join Date: Jan 2003 Location: San Diego, CA Posts: 98	When you say 10 bolt or 12 bolt what are you refering to? My best guess is the cover bolts. __________________ 67 Fleetside Shortie, small window, slip & slide tranny Upgrades--small block, tilt column, disc 5 lug conversion (front and rear), Future Projects--suburban gas tank under the bed, rear roll pan, better gas mileage (currently about 6-10 MPG)

04-23-2003, 08:01 PM	#5
truckman32 AND HOLDING ON TO THE C10 Join Date: Jan 2003 Location: MT.STERLING,KY Posts: 390	Donor Rear End Measurements 60-61 inches > 64-69 1/2 ton 2wd Chevy truck/ Some GMC 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70 62 inches > 64-77 Chevelle, 73-76 Torino, 89 Trans Am, 70 2wd truck 6 lug rear end 12 bolt Possible gear ratio's 3:08, 3:40, 3:73 70-81 4wd 6 lug reared ............................................................... 71- Newer 2wd trucks use a 5 on 5 lug pattern 71-76 Full Size Cars " "" "" i have heard of the 5 lug axle swap on the 70 they used a 71-? __________________ 66 swb/ss chevy c10 SOLD 62 swb/fs chevy c10 :p SOLD 84 swb/fs chevy c10 91 sdime 383/th350

04-24-2003, 08:09 AM	#6
chevy lover HMMMM Chevy Join Date: Aug 2002 Location: Quakertown, Pa Posts: 203	3.70 that is what mine is. but I'm looking to find a posi carrier for 4.11's. so if anybody has a 12 bolt carrier I can put 4.11 gears on let me know(as if anybody wants to get rid of them) __________________ 68 Chevy C10 swb(under construction) 82 GMC K1500 6.2l diesel (daily driver) 77 Chevy K30 frame (only thing left is axles and trans/transfer)______________________________ Mike

10-24-2002, 08:30 PM	#2
chevy lover HMMMM Chevy Join Date: Aug 2002 Location: Quakertown, Pa Posts: 203	I did without any trouble yet. I found a '72 in the local scrape yard and got the rear. Pulled the axles out and swapped them into the rear of my truck. I would make sure it is the same type of rear, ie. 12 or 10.

04-24-2003, 07:28 PM	#7
truckman32 AND HOLDING ON TO THE C10 Join Date: Jan 2003 Location: MT.STERLING,KY Posts: 390	chevy lover.. what year is your truck __________________ 66 swb/ss chevy c10 SOLD 62 swb/fs chevy c10 :p SOLD 84 swb/fs chevy c10 91 sdime 383/th350

04-24-2003, 08:31 PM	#8
chevy lover HMMMM Chevy Join Date: Aug 2002 Location: Quakertown, Pa Posts: 203	68 chevy 1/2 ton swb __________________ 68 Chevy C10 swb(under construction) 82 GMC K1500 6.2l diesel (daily driver) 77 Chevy K30 frame (only thing left is axles and trans/transfer)______________________________ Mike

04-24-2003, 09:05 PM	#9
truckman32 AND HOLDING ON TO THE C10 Join Date: Jan 2003 Location: MT.STERLING,KY Posts: 390	refering to the axle swap that ironbuttlcmc was asking about on his 63... the swap you did on your 69 truck leads me to believe that your 69 must of had a 6lug 70 model rearend put in it at some time because the 72 axels would of been to long for your 69 rear but the 70"s model rearend is the same lenth as the 72 you purchased at the scrapyard the 72 rearends are 62" long and the 69 should be the same as my 66 60" or 61" the 70's model rearends and the 69 rearends look just a like since they are both 6 lugs just 1 or 2 inches difference i will measure my 66 c10 and let you know for sure,you might want to measure your truck i will ask around here in ky to help ya find them 411 gears ..........i need a 62 truck door __________________ 66 swb/ss chevy c10 SOLD 62 swb/fs chevy c10 :p SOLD 84 swb/fs chevy c10 91 sdime 383/th350

04-24-2003, 09:36 PM	#10
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,831	truckman32 That site has some good information on it..........thanks........... __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

04-25-2003, 05:36 PM	#11
Iron-Butt 454 club Join Date: Oct 2002 Location: Oklahoma Posts: 1,348	rear end change I changed out the complete rear end for a 1971 5 lug. I went with a 307 gear since I have been running the 250 6 cyl and 200r overdive tranny. I get great gas mileage and it has great cruising speed on the highway. __________________ David 1965 Chevrolet c-10 454 automatic Custom bbw swb. 1965 Chevrolet C-10 swb (Sold) 1963 Chevrolet C-10 6 Cyl automatic with dual exhaust, pb, ps and 17's. R.I.P "I will miss you. 1967 Chevrolet C-10 6 Cyl Custom lwb 1939 Chevrolet Coupe, 350 v8 automatic. 1935 Chevrolet 2 Dr Standard in the works. 2015 Harley Davidson Street Glide. 2023 Chevrolet Stingray Z51 Convertible. I never want to grow up.

04-25-2003, 07:07 PM	#12
truckman32 AND HOLDING ON TO THE C10 Join Date: Jan 2003 Location: MT.STERLING,KY Posts: 390	glad to see you got your 5 lug rearend the way you wanted if i can be of anymore help give me a hollar __________________ 66 swb/ss chevy c10 SOLD 62 swb/fs chevy c10 :p SOLD 84 swb/fs chevy c10 91 sdime 383/th350



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