ZR1?

[ettevder]

Zr-1?

I just recently purchased a 70- LT-1 coupe to go along with my '67 red 350 hp roadster. The coupe will absolutely run away and HIDE from the good running '67!
My question is how can I determine if this car is a rare ZR-1 ? Some of the items seem to fit, like 7 leafs in the rear spring, aluminum radiator, originally no radio. I know the engines are the same, but short of locating a seemingly non existant tank sticker, how can I tell for sure if this is a possible ZR-1, or (just) a LT-1 with the big suspension and such?

P.S. the brake calipers are single pin, but have been changed in the past.

 

[KOPBET]

Is the 5th digit of the VIN a "Z"?

 

[Eric]

Is the 5th digit of the VIN a "Z"?

You're thinking C4 ZR-1 KOPBET, he's talking about the original ZR1 of C3 vintage.

Now back to the question. I can't tell you a precise way to tell but I can add to the list of things to confirm the existance or non-existance of. Does your car have any of the following: power windows, power steering, factory alarm (keyhole over the CORVETTE lettering on tail af car)? If yes, it's not a ZR1. While these things were available on an LT-1, they weren't on a ZR1. Also, you should have the M-22 rock crusher tranny and your engine broadcast code on the stamp pad should be CGY which is specific to ZR1 and M-22 combiniation(JohnZ or someone please confirm this for me).

Good luck on your quest!

 

[KOPBET]

I think I saw "70" and read "90". S H i * Damn bifocals.

 

[dlrshort]

Eric, I think some of the options you mentioned (pw,pb,air,ps) were only available on the '72 LT-1? Correct me if I am wrong.

Dave S.

 

[Eric]

Eric, I think some of the options you mentioned (pw,pb,air,ps) were only available on the '72 LT-1? Correct me if I am wrong.

Dave S.

Dave,

Re-read my post, that was my point. If any of those options were on the car, it's not a ZR1. The options I listed were, I believe, available on regular LT-1's. However, I think you and KOPBET must have the same bifocals, I didn't list a/c in that post anywhere:L.

- Eric

 

[dlrshort]

Eric, you need bifocals too, what I was listing was that power steering was not available on the LT-1's either.

Dave

 

[KOPBET]

Hey, I've got some for sale! :L

 

[ettevder]

ZR-1 ?

The research I've done myself shows no power steering, air or windows on the early LT-1's. (The '72's had these options) My car has none of those items, but DOES have some of the equipment that is peculiar to the ZR-1.

One of the replies mentioned the fact that ZR-1's did not have a factory alarm, and my car does, so it's probably not a ZR-1.

Oh well, it's STILL a great car to drive. The first thing I did when I got it home was take the slicks off...big mistake! After smokin the Goodyears a couple times I put the Mickey ET's back on. I think I'll just drive this one when I can't beat 'em in my L-79 roadster.

 

[Robert N]

What is the engine suffix code on the block stamp pad. That is where the main prrof lies.

 

[Eric]

Eric, you need bifocals too, what I was listing was that power steering was not available on the LT-1's either.

Dave

ROFL! Well actually I had lasik Friday so my vision is a little fuzzy.:L:L:L

- Eric

 

[ettevder]

engine suffix

The car's in my son's custom shop right now for cosmetics and windshield frame work. I'll get him to look up the suffix and get back to you with it. I was not aware the suffix was different for a ZR, and the guy I bought it from (3rd owner) claims the second owner claimed the original engine was replaced under warranty for the first owner.

I just bought this car to drive while we repaint my 67 roadster, but the more i drive it, the more I like it, and if it turns out to be really rare, I may cut the '67 loose instead!

 

[Eric]

Re: engine suffix

....the guy I bought it from (3rd owner) claims the second owner claimed the original engine was replaced under warranty for the first owner.

Eeek! Service replacements will have a different broadcast code most likely. Someone on here has the codes for service replacements as well. Hopefully they'll see this thread.

-Eric

 

[ettevder]

vetteless in Manassas?

Hey,
thanks for the info, you certainly seem to know your vettes, in fact most guys think the first ZR-1 was a c-4 vintage. How come you're vetteless?

 

[Eric]

Re: vetteless in Manassas?

Hey,
thanks for the info, you certainly seem to know your vettes, in fact most guys think the first ZR-1 was a c-4 vintage. How come you're vetteless?

Hey, that's what the CAC is all about! I'm Vetteless so that my wife can complete her education. I get to go shopping for another Shark in May 2005 - closer every day.

- Eric

 

[yellow_2002_germany]

The Corvette Black Book also states that the fan shroud was metal in the ZR-1.

 

[Rab563]

Another option that the original ZR1 did NOT have was a radio. There is a block off plate where the radio goes and there is no antena, not even a hole for the antena. The hole was filled in at the factory. I was in Reno ,NV for Hot August nights and I saw real 72' ZR1 in the action. I did not see it cross the block so I do not know if it sold are not and at what price. The hood was down so I am unable to verify the power steering or power brakes but did not have a radio or antenna. I did not know about the alarm key or I would have checked for that also.


Ron

 

[Rab563]

One article that I have read said that for 72' ZR1's, some came with fan should while others did not. I believe the article was written by an NCRS fellow.

 

[Robert N]

ZR-1s did not come with shrouds as a general rule of thumb. There is, however, some dispute as to whether any did have shrouds and how many.

 

[LTdash1]

ZR-1 specs

ZR-1 Vettes were mainly purchased to road race so, most should be roadsters (racers always wanted the lower center of gravity and ease of rollcage installation that you get with a roadster.) The ZR-1 package included: M-22 "rock crusher" Muncie 4 speed, HD J56 brakes that have several unique parts (could be missing in action this many years down the road.) The ZR-1 also had the L-88 aluminum radiator (not to be confused with the smaller "small block" aluminum radiator.) There have been several other points covered by members here but, odds are highly against any ZR-1 surviving as a "stock" Vette as most were cut-up and flared for racing shortly after being purchased. My 2 cents, Eric B.