Export RPO question
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Team Owner
Joined: Dec 1999
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From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Export RPO question
I was looking thru some websites that show the various RPO codes for C4's and I came across a very interesting code for an Export Front Tow Hook, RPO V70. Apparently this particular option was for export cars only and I have only found it listed for 1988 cars. GM had to offer a number of specific options for Corvettes that were exported to foreign dealers
Another website shows a Front Tow Hook RPO V76 but doesn't list a model year.
Anybody know anything about this particular option? I'm trying to fashion a front tow hook for my '87 track day car and it's become a real job to figure out how to install an aftermarket hook or even build one.
Another website shows a Front Tow Hook RPO V76 but doesn't list a model year.
Anybody know anything about this particular option? I'm trying to fashion a front tow hook for my '87 track day car and it's become a real job to figure out how to install an aftermarket hook or even build one.
Team Owner
Joined: Sep 2003
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Likes: 2,737
I was looking thru some websites that show the various RPO codes for C4's and I came across a very interesting code for an Export Front Tow Hook, RPO V70. Apparently this particular option was for export cars only and I have only found it listed for 1988 cars. GM had to offer a number of specific options for Corvettes that were exported to foreign dealers
Another website shows a Front Tow Hook RPO V76 but doesn't list a model year.
Anybody know anything about this particular option? I'm trying to fashion a front tow hook for my '87 track day car and it's become a real job to figure out how to install an aftermarket hook or even build one.
Another website shows a Front Tow Hook RPO V76 but doesn't list a model year.
Anybody know anything about this particular option? I'm trying to fashion a front tow hook for my '87 track day car and it's become a real job to figure out how to install an aftermarket hook or even build one.
https://www.corvetteforum.com/forums...post1580070574
Here's another thread of his for the same BUT the CF post has dimensions etc:
http://www.zr1.net/forum/showthread....front+tow+hook
Regarding V70 & V76:
V70 '84 - '87 cars
V76 '94 - '96
No images of the V70 for '84 - '87 but I'll look in a couple other reference documents I have.
Last edited by WVZR-1; Mar 15, 2015 at 07:09 AM.
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Team Owner
Joined: Dec 1999
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From: Lacey WA RVN 68-69
NCM Sinkhole Donor
That's a very interesting thread. The early C4's don't appear to have a robust crossmember in front of the radiator. The only thing I can see under the front of my '87 around the air dam are the "fangs" and the braces for the radiator core support. The core support has a pair of tubular brackets that bolt to the front crossmember near the lower control arms and go forward to the radiator core support.
I want to be able to use a winch to get my car in my enclosed trailer so there would be some upwards and downwards force on the tow bracket as the car goes up the ramp and levels out. For track days, I want the towing eye to be visible as track workers don't like to crawl around under cars to hook up a strap.
If you do find anything for the early C4's I would really appreciate seeing what you may find. And thanks for the response!!
I want to be able to use a winch to get my car in my enclosed trailer so there would be some upwards and downwards force on the tow bracket as the car goes up the ramp and levels out. For track days, I want the towing eye to be visible as track workers don't like to crawl around under cars to hook up a strap.
If you do find anything for the early C4's I would really appreciate seeing what you may find. And thanks for the response!!
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\
If this were a "track only" car I don't know why it wouldn't be more preferred to go through the tag opening all the way to the x-member that the front bumper bar attaches to. That's welded on rail to rail across the front.
The skid-bar impact bracket that's 1 1/4" wasn't added to cars until '90. I disregarded that originally because it's generally assumed that fronts on '84 - '90 are same/similar. Adding that member might be doable - I've never thought about it.
#11 in this image:
http://parts.nalleygmc.com/showAssem...=0&modelYear=0
Go through the absorber and impact bar to get to #3 in the same image. That x-member is on all C4's.
That's a very interesting thread. The early C4's don't appear to have a robust crossmember in front of the radiator. The only thing I can see under the front of my '87 around the air dam are the "fangs" and the braces for the radiator core support. The core support has a pair of tubular brackets that bolt to the front crossmember near the lower control arms and go forward to the radiator core support.
I want to be able to use a winch to get my car in my enclosed trailer so there would be some upwards and downwards force on the tow bracket as the car goes up the ramp and levels out. For track days, I want the towing eye to be visible as track workers don't like to crawl around under cars to hook up a strap.
If you do find anything for the early C4's I would really appreciate seeing what you may find. And thanks for the response!!
I want to be able to use a winch to get my car in my enclosed trailer so there would be some upwards and downwards force on the tow bracket as the car goes up the ramp and levels out. For track days, I want the towing eye to be visible as track workers don't like to crawl around under cars to hook up a strap.
If you do find anything for the early C4's I would really appreciate seeing what you may find. And thanks for the response!!
The skid-bar impact bracket that's 1 1/4" wasn't added to cars until '90. I disregarded that originally because it's generally assumed that fronts on '84 - '90 are same/similar. Adding that member might be doable - I've never thought about it.
#11 in this image:
http://parts.nalleygmc.com/showAssem...=0&modelYear=0
Go through the absorber and impact bar to get to #3 in the same image. That x-member is on all C4's.
Last edited by WVZR-1; Mar 15, 2015 at 10:42 AM.
Thread Starter
Team Owner
Joined: Dec 1999
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From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Here's a pic of the underside of my '87 showing the two tubular braces. The forward ends attach to the "fangs", but I have no idea what is directly above them. In the pic, the bottom of the radiator core support appears to be unattached at the bottom. In the link you provided, the exploded parts diagram shows a #22 that (at least in the later C4's) looks like it hold the "fangs" in place. I'll have to get the car up on my rack to have a closer look.
Maybe a longer piece going from the front crossmember thru the air dam (like the pic for the ZR-1 unit) and braced by that #22 component may work.
The car also sees street use so I didn't want to go thru the front plate.
Maybe a longer piece going from the front crossmember thru the air dam (like the pic for the ZR-1 unit) and braced by that #22 component may work.
The car also sees street use so I didn't want to go thru the front plate.
Last edited by c4cruiser; Mar 15, 2015 at 11:03 AM.
Burning Brakes
Joined: Apr 2009
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From: That one city...you know that one. Idaho
An idea.
If you don't have a front license plate on the car you MAY be able to build something similar to what WVZR-1 in post #4, but build it so that it can be hidden behind the license plate delete panel.
If you don't have a front license plate on the car you MAY be able to build something similar to what WVZR-1 in post #4, but build it so that it can be hidden behind the license plate delete panel.
Thread Starter
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
The dimensional drawing showed that particular towing bracket is 4" wide, there is a 1" outside loop and the hole is 2" in diameter. So the towing eye would most likely be 3-1/2" to 4" in front of the plate. That would cut thru the middle plate letters (personalized plate C4CRUZR).
Burning Brakes
Joined: Apr 2009
Posts: 1,228
Likes: 10
From: That one city...you know that one. Idaho
You don't have to "deface" your license plate, and I said you would have to build it. You have a front license plate, and you want a tow hook but you want it hidden?
You can build a custom device that would hold the front plate, and be easily removed. Then also build a second part that has the tow hook. Similar to a receiver hitch, but not for towing trailers. At the track you could remove the plate, and add the hook.
You can build a custom device that would hold the front plate, and be easily removed. Then also build a second part that has the tow hook. Similar to a receiver hitch, but not for towing trailers. At the track you could remove the plate, and add the hook.
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