![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Registered User
Join Date: Oct 2005
Location: North Texas
Posts: 179
|
Switching to 5x4 3/4 Lug pattern on a 71'
2 questions on this....do you guys know if there are any rotors that will swap over from a car? Someone told me that mid 70's Bonneville rotors will work.
Also, I'm wondering if axles from a Chevelle 12-bolt might happen to be the right length to swap the rears with the truck 12-bolt? I happen to have a set in the garage. I have a set of GM Ralleys, and I'd like to put them on the 71'....just wondering what is commonly used to convert from 5x5 to 5x4 3/4. Thanks!
__________________
72' LWB Cheyenne 73' Camaro Z28/RS 70' Chevelle RagTop 00=ss=00 |
![]() |
![]() |
![]() |
#2 |
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
http://www.jegs.com/webapp/wcs/store...egory_rn=36674 At the rear, you can redrill the axles & drums, or opt for a car (complete diff), & weld the brackets on to fit it, but I doubt you will get any stock car type axle shafts to slide in. up front, I had heard(but can not confirm) that some of the early 70's Vans used a 4 3/4" pattern. The tough part is when you can get the 5 on 5 wheels for around $60 a pop, its probably the most cost effective way to go. Best of luck.....crazyL
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... Last edited by crazy longhorn; 12-09-2005 at 06:53 PM. |
![]() |
![]() |
![]() |
#3 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
I was about to say that crazy... you can get stock looking corvette rally wheels in 5 on 5, and even in 6 lug.
|
![]() |
![]() |
![]() |
#4 |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
WHY would you want to go to the passenger car wheel lug pattern? If you have a truck, and you use it like a truck is intended, why go with less stopping power?
If it is for the wheels, I'm agreeing with Longhorn Man.....there's lots of wheels out there that are made for the 5-lug pattern. For those who have a 6-lug truck, like mine, there's more than I could choose from....with spacer/adapters, the late-model wheels can be used. I just got my 6-lug, Corvette-style rallye wheels back from the powder coaters, and they look great, and they're 6-lug. With a cap and a trim ring, they're way cool.
__________________
Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
![]() |
![]() |
![]() |
#5 | |
Senior Member
Join Date: Aug 2005
Location: tulsa OK
Posts: 3,070
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
Quote:
|
|
![]() |
![]() |
![]() |
#6 |
And Don't Call Me Shirley
![]() Join Date: Oct 2005
Location: Cameron Park, CA
Posts: 115
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
The Chevelle axle swap will not work. The axle bearing & surface in the 12 bolt truck rear is much larger than Chevelle, Camaro, and Nova. The Impala's used a big bearing like the truck, but also 5 on 5 bolt patterns as well.
__________________
Rick Tucker 1969 C20/Custom Camper (the Green Machine)Sold 1970 GMC 4000 COE (future Ramp Truck) 1972 K10 Longbed (restoration begins June 2020) |
![]() |
![]() |
![]() |
#7 | |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
Quote:
Okay, you win!! I don't have the imagination, nor the unobtainium (money) to fund such an upgrade. Yeah, you'll have more stopping power. No argument. I just thought, maybe because of others wording, that the upgrade was to use passenger car, not 'Vette, components. Go for it.
__________________
Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
|
![]() |
![]() |
![]() |
#8 | |
Registered User
Join Date: Oct 2005
Location: North Texas
Posts: 179
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
Quote:
I wouldn't think it would change the carrying capacity at all either, but that's a non-concern for me as well....this truck is being restored, no plans at all to be used as a work truck....I leave that duty up to my F250. BTW - BIG thanks to everyone else for the replies on this...I'm going to look into the few options I have here, but it appears that it might be worth it to just sell the Ralleys that I already have, and then buy the 5-on-5's from someone like Jegs, since they are pretty cheap.
__________________
72' LWB Cheyenne 73' Camaro Z28/RS 70' Chevelle RagTop 00=ss=00 |
|
![]() |
![]() |
![]() |
#9 |
55454
Join Date: Mar 2005
Location: Lafayette La.
Posts: 340
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
Does anyone know if the early van small bolt pattern was only on drum or is it possible they had disc. I wonder if it would be the same bearing.
Tommy
__________________
72 Cheyenne 1956 3100 1955 210 19 year old Chihuahua (Factory Teeth) |
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: Oct 2005
Location: west coast
Posts: 51
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
My 1972 Chevy 1/2 ton van has the disc-brake 5 on 4 3/4 lug pattern. Think they changed to 5 on 5 in 73, but not positive.
__________________
55 Chevy small window. 66 FJ40 LandCruiser. 64 Chevy Van,350/350 72 Chevy 10 Van,short wb,454 78 Chevy 10 Van,short wb,350 72 Chevy Malibu 350. 77 Chevy Suburban. Silverado 20 Trailering Special.454,turbo400. |
![]() |
![]() |
![]() |
#11 |
55454
Join Date: Mar 2005
Location: Lafayette La.
Posts: 340
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
Thanks Livewire, I go to the parts house and do some comparing, I will let you know what I find.
Tommy
__________________
72 Cheyenne 1956 3100 1955 210 19 year old Chihuahua (Factory Teeth) |
![]() |
![]() |
![]() |
#12 |
Senior Member
![]() Join Date: Oct 2001
Location: Edgerton OH USA
Posts: 631
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
If you want to go do a complete C5 brake conversion that's fine and I'm sure the stopping power will be fantastic but Rreemo originally asked about rotors and rear axles for his '71 so he could mount his 4 3/4 bolt pattern Ralley wheels.
I checked a few things and find that both the C10 and G10 (van) use the same outer wheel bearing but they use a different inner bearing and seal, probably Impala size and smaller than the C10. I looked up a 1975 Bonneville, which was still one of the really large ones, and found that both the inner and outer wheel bearings and the seal are the same as 1971 C10. So if you can confirm that the Bonne is 4 3/4 then you need to confirm that the diameter, rotor thickness and offset are the same. These specs must be the same or it won't fit your caliper location which can't be changed without swapping in another spindle. They should both look the same laying side by side except the bolt circle. NAPA shows 3 different grades of Bonne rotors. A cheapo replacement for $41.; a premium one for $73.; and a high performance rotor for $114. It looks like you are on to something here. Redrilling your rears is absolutely the easiest and cheapest way to go. Any machine shop can do it by drilling the 4 3/4 pattern between the old 5" holes. This is a common practice in street rodding. You could even do it at home if you have a good drill press and some carbon drills. Of course the easiest way is to sell those 4 3/4 Ralleys and buy a set of truck bolt pattern Corvette Ralleys in a 5x5 pattern. That's what I'm using on my truck and like was said above they are about $60. each from Stockton Wheel or House of Wheels. I guess it's up to you how much work you want to do. If you could find good used Bonne rotors (no newer than '76) you could probably come out cheaper all together. Tom
__________________
'69 swb stepside in progress. '59 Corvette lifetime project Last edited by basketcase; 12-12-2005 at 01:14 PM. |
![]() |
![]() |
![]() |
#13 | |
Registered User
Join Date: Oct 2005
Location: North Texas
Posts: 179
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
Quote:
Good info Tom, thanks a bunch! Just one other question for you....do you know if the 5x5 pattern Ralleys (like you mentioned above) will accept the smaller disc brake center cap? I want to use the smaller style cap...not the sombrero style. Thanks again!
__________________
72' LWB Cheyenne 73' Camaro Z28/RS 70' Chevelle RagTop 00=ss=00 |
|
![]() |
![]() |
![]() |
#14 |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
I bought my Vette-style Rallye wheels from Summitt Racing....free shipping. The wheels are from Wheels Vintiques and are the same price I would have paid for them, from Wheels Vintiques. But, the shipping from CA to AR, would have been $85. So, buying them from Summitt was good for me, plus I got the center caps and hot-rod style trim rings, not the ones we're used to seeing on Rallye wheels. I took 'em and had 'em powder-coated in red, but they come with a silver powder coat, that had some trash in the finish. My powder coater guy smoothed them out and then sprayed them.
Honestly, I think you'll be better off in the long run to go with new wheels for your truck, and sell your old Rallye wheels for whatever you can get for them (but don't give them away!). It is my opinion, that to convert to the smaller lug pattern would be a bit of trouble. The comment about the Pontiac wheels didn't say what the pattern was, but Pontiac, Olds, Buick and Cadillac all used the 5 on 5-inch bolt pattern, while Chevy didn't go to that until they changed up the trucks in '73.
__________________
Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
![]() |
![]() |
![]() |
#15 | |
Senior Member
![]() Join Date: Oct 2001
Location: Edgerton OH USA
Posts: 631
|
Re: Switching to 5x4 3/4 Lug pattern on a 71'
Quote:
Tom
__________________
'69 swb stepside in progress. '59 Corvette lifetime project |
|
![]() |
![]() |
![]() |
Bookmarks |
|
|