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#1 |
Registered User
Join Date: Nov 2004
Location: Chillicothe, OH
Posts: 11
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Re: 1970 front positrac
well, good news/bad news at least it's not no news. As far as I can tell, the current wheels are 3 and 3/4 in backspacing. the modern wheels I want are 4.5 in backspacing. With my unscientific measuring, I do not have an extra 3/4 in before I am hitting the tie rods, maybe 1/2 in.
Do any of you know the maximum backspacing I can use? I guess maybe I should have thought of this sooner...... ![]() |
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#2 |
Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: 1970 front positrac
These later GM wheels would look good on your truck. Pretty sure someone over on the squarebody board could hook you up with a set and caps. But there is a retail choice as well.
http://www.wheelsandcaps.com/w_selec...el=&type=&id=1
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Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
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#3 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: 1970 front positrac
I wish I could give you a cast in stone limit on backspacing. I know hewer vehicles started using more. Back in the day we never gave backpacing a thought. It never came up because just about every creation out there took the same amount. I can say that 4" is the nominal figure. But,That doesn't help. I'd say it's hard to believe things are that close tolerance. Consider one thing,though...Are these wheels you're considering 15" or are they a larger diameter? That may be the difference in clearance.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#4 |
Registered User
Join Date: Nov 2004
Location: Chillicothe, OH
Posts: 11
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Re: 1970 front positrac
They are 16", I decided to pull the trigger today and order them. Hoping they clear with the larger wheel, it may be tight but if they do not clear the tie rods, I will probably find some type of spacer.
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#5 |
Registered User
Join Date: Dec 2010
Location: livingston co.mi
Posts: 2,453
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Re: 1970 front positrac
very nice (rare w/the front posi) truck i like the 15x8 steel with d/d stainless caps or some rallys or some slots myself
but its yours so do what you want
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California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project |
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