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Old 01-13-2007, 11:18 PM   #1
bad_burb
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big rim backspacing

Can anyone tell me what backspacing I would need to mount a 20x8.5" wheel on a '74 SWB. Centerline has a set I want, but at 5.4" backspace, it seems too much. Any help would be appreciated.
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'73 C-30 3+3 Dually 454/TH400

'74 Fleetside 350/TH350 (SOLD)
'69 Nova 350/TH350 (project FOR SALE)
'63 Nova 305/TH350 3.73 posi (the wife's project)

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Old 01-14-2007, 09:56 PM   #2
boxrodz
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Re: big rim backspacing

I don't know your stance (lowered?), but they may work in the front. (8s with a bs of ~5" - 5.25" is recommended for the front.) But, since the rear's track is narrower, they may set in too much for your liking. Normally, a 5" bs is recommended for 10s in the rear.
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Old 01-15-2007, 02:01 AM   #3
bad_burb
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Re: big rim backspacing

Sorry, yes the truck is lowered. I do not know the exact amount of drop but I would say about a 4/6".
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'73 C-30 3+3 Dually 454/TH400

'74 Fleetside 350/TH350 (SOLD)
'69 Nova 350/TH350 (project FOR SALE)
'63 Nova 305/TH350 3.73 posi (the wife's project)
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