16.5 x 8.25 6 lug wheels

[Classic v6 GMC's]

Picked up these wheels and wondering if these wheels were available from the factory. I'm looking for 60-66 literature, brochures, ect with these wheels.

[LostMy65]

Looks like they were an option for the 67-72 trucks.

http://67-72chevytrucks.com/vboard/s...d.php?t=472260
http://67-72chevytrucks.com/vboard/s...d.php?t=150138

http://67-72chevytrucks.com/vboard/s...d.php?t=217506

[60-66]

I cant find anything in the DATA books for 1965-1966 . I haven't yet looked in the parts books or 67 DATA. Heres an old ad that was posted but no date. I have some 8 lugs that were put on a 1961 camper but people are saying 1966 is the first factory usage but so far only 8 lug , no information yet on 6 lug 1960-1966.

[aerotruk63]

N.L.A. in 1975 parts book
suppesedes 3851350 67-68 C20 K20

[60-66]

GM Part numbers for the 6 lug 16.5X8.25 wheel are 3974204 superseded by second design in 10-71 is 3998539 but everything I read says 1969 and up. Andy , you might look the wheel over for dates to determine what your wheels were from.

[Classic v6 GMC's]

Originally Posted by LostMy65

Looks like they were an option for the 67-72 trucks.

Yeah I knew they were available on the later years but wanted to know about the 60-66 years. Thanks for the links.

Originally Posted by 60-66

I cant find anything in the DATA books for 1965-1966 . I haven't yet looked in the parts books or 67 DATA. Heres an old ad that was posted but no date. I have some 8 lugs that were put on a 1961 camper but people are saying 1966 is the first factory usage but so far only 8 lug , no information yet on 6 lug 1960-1966.

Yeah I could not find it in the books either but I know your 1966 K20 was special ordered with 16.5's so maybe these were the same way?

Originally Posted by 60-66

GM Part numbers for the 6 lug 16.5X8.25 wheel are 3974204 superseded by second design in 10-71 is 3998539 but everything I read says 1969 and up. Andy , you might look the wheel over for dates to determine what your wheels were from.

The only number on the wheels is 27027.

[aerotruk63]

skid steer wheels are similar in assembly.
Your centerbore is how much in diameter.
6 wheel clips on our wheels generally 3.

[aerotruk63]

[aerotruk63]

http://67-72chevytrucks.com/vboard/s...d.php?t=255801

[factorystock]

Originally Posted by 60-66

Heres an old ad that was posted but no date.

Sorry, looks like my ad, can't seem to find the magazine for date, however these wheels came out in late 1963 in the aftermarket for 1/2 and 3/4 tons of all makes, when camper craze began. These rims could have been special ordered from '63-'66, as your K 20 indeed was. They were a standard option beginning in 1967. What is interesting is that the manufactures, either Kelsey Hayes, Goodyear or Firestone, used the factory correct 17.5" centers and just rivited on a generic 16'5" wide base drop center rim. In other words, the part the hubcap goes on is a factory piece and has correct offset. Here is a '60 Chevy with them, but, must have been put on at a later date.

[Classic v6 GMC's]

Originally Posted by aerotruk63

skid steer wheels are similar in assembly.
Your centerbore is how much in diameter.
6 wheel clips on our wheels generally 3.

I will measure the centerbore tomorrow.
I thought the 6 clips was interesting as well.

Originally Posted by aerotruk63

Neat brochure.

Originally Posted by factorystock

Sorry, looks like my ad, can't seem to find the magazine for date, however these wheels came out in late 1963 in the aftermarket for 1/2 and 3/4 tons of all makes, when camper craze began. These rims could have been special ordered from '63-'66, as your K 20 indeed was. They were a standard option beginning in 1967. What is interesting is that the manufactures, either Kelsey Hayes, Goodyear or Firestone, used the factory correct 17.5" centers and just rivited on a generic 16'5" wide base drop center rim. In other words, the part the hubcap goes on is a factory piece and has correct offset. Here is a '60 Chevy with them, but, must have been put on at a later date.

Thanks for the info. The centers do look factory. The 60 looks cool with them.

[factorystock]

Forgot to mention, the '60 is indeed a 1/2 ton. These were the period wide wheels before the wide spoke wheels became popular in the 70's.