2nd gen (70-81) Z28 wheels

[69L78]

Rob, Sent you a PM.

[BARN FIND]

I also sent you a PM.

[Chevy454]

Anyone know if the round or oval valve stem hole are the only differences between early & late wheels?

[MosportGreen66]

Only difference... but also the casting... AU for 1970-1973... (I think)

[budnate]

[ QUOTE ]
Anyone know if the round or oval valve stem hole are the only differences between early & late wheels?

[/ QUOTE ]

Rob seems like there was something else, I did a search over at Nasty on the set I had, and a guy had lots of info and pics on what to look for in a post, it was a real good read...be darned I cant recall much of it though, lol claiming a senior moment, over and out.

[CamarosRus]

The below link tells the story on 70-81 Wheels. I wont go on and on about all the misc details concerning rings,caps &lug nuts, cause I dont think that was your intent. The small oblong 5/8"X1" Valve Stem hole stopped around May-June and the late 70-73 Z-28 got the 13/16"X 1" hole wheels


http://www.nastyz28.com/faq/wheel/z28wheel.html

[Chevy454]

Good info there, Chuck...thanks! But basically, if I score *any* set of 2ng gen Z wheels I won't run into any wierd offsets or ring/cap problems, right?

Thanks to a couple of members here I think I've got some lined up, and just wanna make for sure before the checks go in the mail...

[CamarosRus]

Rob, In so far as I know, ALL the 70-81 Z-28 wheels will have same basic external/internal specs. Like above link points out, the trim ring just sits differently with 77-81 wheels. You HAVE to use the Laquer paint formula with suede additive to achieve the 70-74 look, but advising you its not a durable coating and advisable mostly for show cars.
ROUND hole 77-81 Z wheels were painted body color as you probably already know......

[Hylton]

[ QUOTE ]
Good info there, Chuck...thanks! But basically, if I score *any* set of 2ng gen Z wheels I won't run into any wierd offsets or ring/cap problems, right?


[/ QUOTE ]

Any set will work Rob but the round holed rims are usually much cheaper. The rings and caps are interchangeable BUT due to the design of the early rims (slotted and oblong valve stem holes) the trim ring will only show it's face. In the later rims (round stem hole) the inner rim was set back a bit so that a quarter inch of the inner part of the trim ring will show. This actually looks nicer but it is not correct for 70-72 cars.

Whatever rims you use, you will not have any backspacing problems.