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I have a 1968 Oldsmobile delta 88. This car has drum brakes all the way around and I will possibly be doing the factory front disc set up. I want to run the SSII staggered 17x8 and 17x9 wheel package option. My question is I noticed that these wheels are in the 5x4-3/4" lug pattern but do they have a 5X5 option? if not could anybody recommend an adapter? I really want to run these wheels but it seems anytime I find a wheel I like the old 5x5 pattern screws me over.
Some folks don't care for adaptors. I think a high-quality adaptors, installed properly, is acceptable. Opinions will vary.
You need to keep in mind the adaptor will effectively reduce the amount of backspacing the wheel has. Seems most adaptors are 1.25" thick, so the 17x8 wheel will have 3 1/4" backspacing, and the 17x9 wheel will have 3 7/8 backspacing. I have no idea of those specs will work on your Delta.
Other than a handful of extremely rare SSII wheels built for the real 1977 pace cars, all SSII wheels are 4.75" bolt circle. The heavy full size cars use a larger bolt pattern and 1/2" (vs 7/16") studs for a reason. Going smaller (and using an adapter as well) is not the best idea structurally. Find out if you can get those 17" aluminum wheels undrilled and have a machine shop put the correct bolt pattern on them.
If you're going to use bolt pattern adapters make sure you get a quality set. If you use my username; Olds64, and do an advanced search for "adapters," you'll see I've spoken against using them in the past. Now, I don't know...
Maybe Joe was right in the thread I linked.
I guess if I got a set of "adapters" for my 71 98 they'd easily be over $1000 for the set for knock-off Chinas. Now if I bought Daytons.🤑🤑🤑
Properly designed spacers work fine in the correct application. The problem is that very few are properly designed or applied. As I said in that thread, I have hub-centric spacers between the rear wheels of my dually truck. They are not adapters, the bolt pattern and wheel stud size is the same. The front wheels of nearly every dually truck sold has a factory-installed spacer. In that case, the whole point of the spacer is to put the centerline of the tire in line with the wheel bearings - dually wheels have about 6.5" of offset.
In this thread we're talking about a bolt pattern ADAPTER. Going from a larger diameter pattern with larger diameter studs to smaller REDUCES load carrying capacity. The offset that these adapters add compounds the problem by INCREASING the load on those now undersized wheel studs.
Would replacing the axles and rotors be possible to get the 4 3/4 bolt pattern? I'm sure the axles would have to be custom made but maybe 73-77 A body rotors would interchange. Custom rotors? I always thought 15" SS1 or 2's would look great on a 71-76 big car.
Would replacing the axles and rotors be possible to get the 4 3/4 bolt pattern? I'm sure the axles would have to be custom made but maybe 73-77 A body rotors would interchange. Custom rotors? I always thought 15" SS1 or 2's would look great on a 71-76 big car.
The 1968 full size spindles use completely different bearing diameters and spacing. Sure, you can spend a ton of money to custom machine parts, and you've still got the smaller and weaker lugs and bolt pattern. It would be a TON cheaper and smarter to try to buy the wheels undrilled and have them drilled for the 5 x 5 pattern. They're just aluminum wheels. The holes have to be machined at some point.
