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GTX JOHN · 02-14-2014, 06:25 AM

I had 10 inch with 4 1/2 BS 64 Ply. With 65 rear end with no Key axles.
Wider/ Later Rear End will require more BS. What year rear end are you
using and what width and I can tell you more exactly?

Most everybody who ran these cars replaced the weak and difficult to remove
Keyed axles with a later model rear. Many years had the same spring perch
width ( about 44 inches ) but differing widths of housings affecting the back spacing
choice.

You should have some leeway because we used to run 10.5 width in SS without any
mods except wheel lip.

02-14-2014, 06:25 AM	#8
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,736 Likes: 2,808 Liked 2,488 Times in 698 Posts	Re: Backspacing I had 10 inch with 4 1/2 BS 64 Ply. With 65 rear end with no Key axles. Wider/ Later Rear End will require more BS. What year rear end are you using and what width and I can tell you more exactly? Most everybody who ran these cars replaced the weak and difficult to remove Keyed axles with a later model rear. Many years had the same spring perch width ( about 44 inches ) but differing widths of housings affecting the back spacing choice. You should have some leeway because we used to run 10.5 width in SS without any mods except wheel lip. __________________ John Irving 741 Stock 741 Super Stock Last edited by GTX JOHN; 02-14-2014 at 06:21 PM.