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#1 |
Registered User
Join Date: Feb 2009
Location: Yelm, WA
Posts: 62
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cheap 5 lug conversion
ive got a 70 GMC and i need to convert the rear to 5 lug to match the 71 disc brake set up i put in the front. does anyone know where i can get a cheap kit. im also gonna be converting from leafs to coils so would it be more cost effective to just get a rear end out of a coil truck>?
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#2 |
resident oilfield trash
Join Date: Jan 2009
Location: Lubbock TX
Posts: 1,465
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Re: cheap 5 lug conversion
Thats what I did painless enough
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1967 SWB C10 396/400 factory air factory tach (sadly had to send to a new home) 1986 Honda 70 Fourtrax 1991 Chevrolet K5 blazer 2wd 1982 Mastercraft Pro Star 190 Stars and Stripes 2002 Chevrolet Tahoe 2011 Nissan Armada ![]() |
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#3 |
Registered User
Join Date: May 2000
Location: Alexandria, LA 71301
Posts: 1,451
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Re: cheap 5 lug conversion
and another good thing about that swap is that the trailing arm crossmember is already there, so everything is a bolt-on deal.
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-02 avalanche (daily driver) -66 gto ragtop 389/400 (garage queen, hand-me-down from dad) -72 Tribute Trans Am (6.0LS/T56 6-speed) in progress -2003 YUKON (Wife's) -71 gmc swb fleet (current project, gonna shave everything, bags, stuff w/ 20's, gen III powertrain) -48 3100 SWB - 12/31/23 LONG TERM Project |
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#4 |
Sofa King Crazy!!
Join Date: Oct 2008
Location: Houston, TX
Posts: 3,090
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Re: cheap 5 lug conversion
Just take out the axle and have the six lug redrilled for 5 lug and the center will need to be turned so the diameter is correct. You will find other threads that offer the same advise. Good Luck!
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You found the Tater. ![]() My Blazer Build (New) - http://67-72chevytrucks.com/vboard/s...d.php?t=654650 My 67 Build - http://67-72chevytrucks.com/vboard/s...d.php?t=335650 67 Chevy LWB big window a/c AKA TOTALLED BY A JACKASS. ![]() 1972 2wd Blazer "Porterbuilt and Sloshed" ![]() |
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#5 |
Registered User
Join Date: Feb 2009
Location: Yelm, WA
Posts: 62
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Re: cheap 5 lug conversion
Im gonna be pumping some horsepower through these though.... about 700 when i push the button, wont re-drilling them weaken them? or would something else break first? and if its alright for this much power where could i get this done? and do i need exact measurments to give them?
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#6 |
Sofa King Crazy!!
Join Date: Oct 2008
Location: Houston, TX
Posts: 3,090
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Re: cheap 5 lug conversion
Ummm......700hp. Yeah, that won't work for you. Check out this rearend article it may help you with a decision, 3rd page first article is good info for us swingarm or trailing arm builders.
http://www.chevyhiperformance.com/te...ght/index.html
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You found the Tater. ![]() My Blazer Build (New) - http://67-72chevytrucks.com/vboard/s...d.php?t=654650 My 67 Build - http://67-72chevytrucks.com/vboard/s...d.php?t=335650 67 Chevy LWB big window a/c AKA TOTALLED BY A JACKASS. ![]() 1972 2wd Blazer "Porterbuilt and Sloshed" ![]() |
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#7 |
Registered User
![]() Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,518
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Re: cheap 5 lug conversion
The least expensive way would be to get everything out of a coil spring 71/72 C-10.
Dutchman's in Portland http://www.dutchmanms.com/ can redrill your axles or make new ones but if you are going from leaves to springs I'd just swap rear ends and not do all the welding on the axle housing that it would take to swap mounts. Last edited by mr48chev; 05-28-2009 at 11:51 AM. |
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#8 |
1970 Daily Driver
Join Date: Jun 2007
Location: Glenns Ferry IDAHO
Posts: 1,037
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Re: cheap 5 lug conversion
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It's not truly yours if you didn't build it yourself or if you don't do your own maintenance. |
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#9 |
Registered User
Join Date: Feb 2009
Location: Yelm, WA
Posts: 62
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Re: cheap 5 lug conversion
where would i go about getting these moser axles? are they pretty strong? do you have a part # for those axles by any chance? the ones from summit. how can i beef up my carrier? because it seems to me like if i beef up the axles they carrier will be the weak link. what i think im gonna do is just buy a cheap set of 5 lug axles and just get some brakes from a 71-up or redrill my drums. then whatever breaks first ill replace with something strong.
BTW lts70 i love your motto... thats me too, im building my motor, doing all the body work, i do my own tranny, i paint, i troubleshoot, i do it all. the only thing i am gonna pay for is machine work/upolstry, because sewing is for girls lol |
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#10 |
motor exploder
Join Date: Mar 2009
Location: Pittsburgh, PA
Posts: 2,346
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Re: cheap 5 lug conversion
The moser axles are hell for strong, as for the carrier, if you get a used rearend, more than likely you'll get an open diff (one wheeled burnouts...), or if you do find one with a GM posi, it will probably need to be rebuilt (new posi clutches). If you're doing the axles, you'll want a posi differential/carrier - Auburn Limited Slip, Eaton Posi Trac, Detroit Locker etc... There's really no sense in putting money down on a good set of axles and using an open differential. One thing to consider is if you do break an axle at speed with a C-clip (GM 10/12 bolt) rearend, the axles can/will come out of the housing and that would be a helluva mess to deal with going down the road.
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Adam 1969 Chevy CST/10 stepside, DART Big M/TREMEC Magnum Extreme/3.73's w/Detroit Truetrac 1965 Chevy Bel Air Wagon (daily driver), 327/TH350,10 bolt w/3.08's 1961 Chevy Bel Air Sport Coupe, ZZ454/M21/9" rear w/3.50's & Detroit Truetrac 2005 GMC 1500 ccsb 2wd, 6.0L/4L65e/3.73 G80 2006 GMC 2500HD ccsb 4x4, DMax LBZ/Allison 6spd/4.56's w/Detroit TrueTrac ![]() ![]() Use the SEARCH function on this forum - it is your friend!! |
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#11 |
Sunburst C10!!!
Join Date: Jan 2009
Location: Texas
Posts: 2,560
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Re: cheap 5 lug conversion
IMO it would be cheaper to put a ford 9in in it
thats what im going to do for the 12 bolt you would have to buy axles c clip eliminators new dif on the 9 in its easier to change out the gears doesnt have c clips the only thing it wouldn't match your bolt pattern
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Gage 1967 C10 Shortbed Stepside |
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#12 |
Registered User
Join Date: May 2007
Location: LOUISIANA
Posts: 811
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Re: cheap 5 lug conversion
you can get axles for the ford 9" with any bolt pattern you want from STRANGE AXLES (ENGINEERING) Can't remember exact name for sure. If your going to have 700HP the 9" is definately the way to go. Their almost bulletproof.
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James '68 Stepside (ground up in progress) My 68 build thread http://louisianaclassictruckclub.fre...side-t956.html '81 SWB "Pap paw" (Driver) The 81 build thread http://louisianaclassictruckclub.fre...-swb-t960.html Member of www.louisianaclassictruckclub.com https://www.facebook.com/groups/296290610747732/ |
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#13 |
I am a Referee of life.
Join Date: Jun 2000
Location: Greensboro N.C.
Posts: 13,993
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Re: cheap 5 lug conversion
Ford 9" or Aftermarket if you want to be sure.
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The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil" |
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#14 |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,698
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Re: cheap 5 lug conversion
3 year old thread.
I bet he has it figured out by now,...
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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