Rear brake drum rim interference 77 c10 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jrpontiac · 11-20-2018, 12:03 AM

I got some aftermarket wheel vintiques 62 series 15x8 steel rims from Jegs. 4.25 backspacing. The rear is a 1977 big 10. The rim is hitting the lip of the brake drum. Are the rear brakes on a Big 10 bigger than the normal c10. It is almost 1.5 inches short of going on all the way, basically the length of the lug nut. I took the drum off and it went right on. Anyone dealt with this before and what was the solution. The 15x6 steels I have been running fit right on.

D13 · 11-20-2018, 06:56 AM

Big 10 would have the big brake package. 11.15x2.75 vs 11x2 for base brakes. So yes, the drums are wider and deeper.

**Dads79GMC** · 11-20-2018, 11:35 AM

Is the wheel 10”? If so, Wheel Vintique probably reversed that wheel on you. If you still have the box, I bet it says REV on it. Thanks Mike

andyh1956 · 11-22-2018, 10:50 PM

My bud had a '78 or so Big 10 & we tried to install 8" Rallye wheels & they wouldn't fit.

jrpontiac · 11-22-2018, 10:54 PM

Im going to grab a rear drum off a non big 10 and see if that clears. If so ill have a decision to make.

1. 11x2 drum brake conversion.

2. Disc brake conversion. Only concern is..would the disc brakes clear?

**Dads79GMC** · 11-22-2018, 10:52 PM

I have one Heavy Half and a Big10 and 8" "factory" rally wheels fit on both. ???? Weird.

11-20-2018, 12:03 AM	#1
jrpontiac Registered User Join Date: Nov 2017 Location: spokane, wa Posts: 122	Rear brake drum rim interference 77 c10 I got some aftermarket wheel vintiques 62 series 15x8 steel rims from Jegs. 4.25 backspacing. The rear is a 1977 big 10. The rim is hitting the lip of the brake drum. Are the rear brakes on a Big 10 bigger than the normal c10. It is almost 1.5 inches short of going on all the way, basically the length of the lug nut. I took the drum off and it went right on. Anyone dealt with this before and what was the solution. The 15x6 steels I have been running fit right on. Attached Images __________________ 1977 Chevy C10 SB, Turbo 5.3ls, TH400

11-20-2018, 06:56 AM	#2
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: Rear brake drum rim interference 77 c10 Big 10 would have the big brake package. 11.15x2.75 vs 11x2 for base brakes. So yes, the drums are wider and deeper. __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

11-20-2018, 11:35 AM	#3
Dads79GMC Senior Member Join Date: Feb 2008 Location: Des Moines, Iowa Posts: 1,238	Re: Rear brake drum rim interference 77 c10 Is the wheel 10”? If so, Wheel Vintique probably reversed that wheel on you. If you still have the box, I bet it says REV on it. Thanks Mike __________________ Instagram @HomeBuiltC10s Dads 79 GMC Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=642929 1978 Silverado Build http://67-72chevytrucks.com/vboard/s...d.php?t=756016

11-22-2018, 10:50 PM	#4
andyh1956 Registered User Join Date: Mar 2010 Location: thomastown mississippi Posts: 1,261	Re: Rear brake drum rim interference 77 c10 My bud had a '78 or so Big 10 & we tried to install 8" Rallye wheels & they wouldn't fit.

11-22-2018, 10:54 PM	#5
jrpontiac Registered User Join Date: Nov 2017 Location: spokane, wa Posts: 122	Re: Rear brake drum rim interference 77 c10 Im going to grab a rear drum off a non big 10 and see if that clears. If so ill have a decision to make. 1. 11x2 drum brake conversion. 2. Disc brake conversion. Only concern is..would the disc brakes clear? __________________ 1977 Chevy C10 SB, Turbo 5.3ls, TH400

11-22-2018, 10:52 PM	#6
Dads79GMC Senior Member Join Date: Feb 2008 Location: Des Moines, Iowa Posts: 1,238	Re: Rear brake drum rim interference 77 c10 I have one Heavy Half and a Big10 and 8" "factory" rally wheels fit on both. ???? Weird. __________________ Instagram @HomeBuiltC10s Dads 79 GMC Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=642929 1978 Silverado Build http://67-72chevytrucks.com/vboard/s...d.php?t=756016

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