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#1 |
Registered User
Join Date: Aug 2009
Location: North Bend, WA
Posts: 272
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rear ends, back spacing, and wheels
ok guys, i have spent 3 days reading and researching the best i can so please don't flame me and tell me to go do a search. i just want to confirm what i have been reading and get direct input. here is what i have:
1968 C20 LWB with a 1972 c10 rearend and c10 conversion drop spindles on the front. front end has 72 rotors and the rear has 72 drums. i want to use Boss 338 wheels and i know there are issues with the fronts. i am considering 20x8.5 fronts with 4.5 back spacing and then 20x10 rears with 5.25 back spacing. these are my questions: will this work? will i have to grind the front hubs? will the tires rub the rear? currently running 17" wheels and want something to fill the wells better. here is a quick pic as we were loading it to head to the glass shop: ![]() |
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#2 | |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,698
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Re: rear ends, back spacing, and wheels
Quote:
Yes you will have to grind the rotors. The 5.25" on the back would be a 6.25" BS wheel with a 1" spacer? I prefer a 5.5" BS on a 10" wide wheel with the wider 71-72 1/2 ton rearend.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#3 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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The grinding on my 71 took about 5 minutes per side. It's just enough off to get the wheel center cap to fit right so it doesn't bind. I have 8.5" up front with 10" out back. No spacer up front the wheel fit's fine with out the center cap. I used a 1/4" spacer on the back with deep thread lug nuts.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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