FB Marketplace find near Austin, Texas: 5 aluminum K10 wheels $50

[Johnny Atomic]

I see my work here is done.

It was changed as a cost savings.

Forged = RPO PH7

Cast = RPO N90

I think the forged wheel will be smoother on the backside, whereas the cast wheel will have more of an "as cast" texture. Any visible parting lines are wider on a forged part than on a cast part.

I had a set of rallys with snow tires mounted that I ran in the winter. My aluminum wheels never saw snow.

K

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I think only the hoops are forged, not the centers on the earlier ones. The hoops on the inside of the forged ones are MUCH smoother.

here are the only markings i could find on mine.

 

[Johnny Atomic]

I really like the way that center cap looks with the bullet on it. Where did you find those?

The centers are the same as the rally wheel center caps. All rally centers have a hole in the center under the sticker. The hole is perfectly placed to mount these 3" bullets from ebay. I had to buy bolts the correct length, used lock washers, and put epoxy on the bolts when i screwed them in to keep the bullet from coming loose.

Hot Rod Universal Chrome Bullet Caps 3" OD 3" High- HD Cast Metal x 4 | eBay

A 3 1/2" center stud with nut are included, 5/16-18 Thread.

www.ebay.com

 

[HotWheelsBurban]

The centers are the same as the rally wheel center caps. All rally centers have a hole in the center under the sticker. The hole is perfectly placed to mount these 3" bullets from ebay. I had to buy bolts the correct length, used lock washers, and put epoxy on the bolts when i screwed them in to keep the bullet from coming loose.

Hot Rod Universal Chrome Bullet Caps 3" OD 3" High- HD Cast Metal x 4 | eBay

A 3 1/2" center stud with nut are included, 5/16-18 Thread.

www.ebay.com

Good to know, thanks!

 

[bucket]

Not 8 lug (may have been a typo).

5 Lug and 6 lug only.

We never did have a nice factory aluminum wheel for 8 lug, particularly dually. I always had to run a set of aftermarket Alcoa wheels on those.

K

There was an 8-lug version briefly, on some special edition GMC's. I believe the first to get them was the '76(?) Indy pace truck replicas and the second truck to get them was the '78 "Sarge" package. There may have been another application too, not sure.

They were 16.5x8.25", iirc.

 

[bucket]

Here's some pictures stolen from the Google:

1976 Indy pace truck:

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1978 GMC "Sarge":

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[HotWheelsBurban]

I see my work here is done.

It was changed as a cost savings.

Forged = RPO PH7

Cast = RPO N90

I think the forged wheel will be smoother on the backside, whereas the cast wheel will have more of an "as cast" texture. Any visible parting lines are wider on a forged part than on a cast part.

I had a set of rallys with snow tires mounted that I ran in the winter. My aluminum wheels never saw snow.

K

You must be registered for see images attach

Interesting...N90 is the same RPO code for alloy wheels that was used in the OBS era. Good to see it has some history!
Even in a b&w pic that is still a badass looking truck!

 

[HotWheelsBurban]

Here's some pictures stolen from the Google:

1976 Indy pace truck:

You must be registered for see images attach

1978 GMC "Sarge":

You must be registered for see images attach

Those Sarge wheels would look SO COOL on my Crew Cab...but they probably would cost more than I paid for the truck, as rare as they gotta be....