crossmember swap and new wheels - The 1947 - Present Chevrolet & GMC Truck Message Board Network

2mas · 08-16-2013, 04:52 PM

Hi guys,
I'm doing a crossmember swap on my 3/4 66 to a early eighties to get the disc and 5 lug and also make complete air bag drop easier. Will the backspacing/"track width" (is it called that?) change if installing the newer parts?

I'm going for 20 inch wheels with maximum drop, so I really need the backspacing right.

/Thomas
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**Captainfab** · 08-16-2013, 11:32 PM

Yes the track width will increase when upgrading to discs. I just don't remember exactly how much it is. I want to say it is 2 to 2.5". Someone else may know for sure

blazins10 · 08-17-2013, 12:43 AM

my wheels are 20 by 8.5 with + 5 offset , it tucks perfectly
mines on a 82 front end with a 72 rear
and lays frame
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2mas · 08-17-2013, 04:02 PM

Any one knows? how will my back spacing be effected by changing to eighties cross member? br /Thomas
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2mas · 08-20-2013, 12:24 AM

Hi,
Looks like this was a difficult one

if you would go with 20 inch on a bagged truck without the changed crossmember, 8 wide in front and 9 wide in back. What back space would be used?

Br/Thomas
Posted via Mobile Device
Posted via Mobile Device
Posted via Mobile Device

08-16-2013, 04:52 PM	#1
2mas Registered User Join Date: Jun 2011 Location: Sweden Posts: 126	crossmember swap and new wheels Hi guys, I'm doing a crossmember swap on my 3/4 66 to a early eighties to get the disc and 5 lug and also make complete air bag drop easier. Will the backspacing/"track width" (is it called that?) change if installing the newer parts? I'm going for 20 inch wheels with maximum drop, so I really need the backspacing right. /Thomas Posted via Mobile Device

08-16-2013, 11:32 PM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: crossmember swap and new wheels Yes the track width will increase when upgrading to discs. I just don't remember exactly how much it is. I want to say it is 2 to 2.5". Someone else may know for sure __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

08-17-2013, 12:43 AM	#3
blazins10 Registered User Join Date: Apr 2010 Location: vancouver wa Posts: 181	Re: crossmember swap and new wheels my wheels are 20 by 8.5 with + 5 offset , it tucks perfectly mines on a 82 front end with a 72 rear and lays frame Posted via Mobile Device __________________ ///Relaxed Atmosphere

08-17-2013, 04:02 PM	#4
2mas Registered User Join Date: Jun 2011 Location: Sweden Posts: 126	Re: crossmember swap and new wheels Any one knows? how will my back spacing be effected by changing to eighties cross member? br /Thomas Posted via Mobile Device __________________ 1965 c10 BBW LWB - Duramax 2010 Camaro SS - Whipple (721hp) 2017 Volvo V60 diesel-hybrid (233hp) 2008 volvo XC70 diesel http://67-72chevytrucks.com/vboard/s...d.php?t=677577

08-20-2013, 12:24 AM	#5
2mas Registered User Join Date: Jun 2011 Location: Sweden Posts: 126	Re: crossmember swap and new wheels Hi, Looks like this was a difficult one if you would go with 20 inch on a bagged truck without the changed crossmember, 8 wide in front and 9 wide in back. What back space would be used? Br/Thomas Posted via Mobile Device Posted via Mobile Device Posted via Mobile Device __________________ 1965 c10 BBW LWB - Duramax 2010 Camaro SS - Whipple (721hp) 2017 Volvo V60 diesel-hybrid (233hp) 2008 volvo XC70 diesel http://67-72chevytrucks.com/vboard/s...d.php?t=677577



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