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Old 12-22-2013, 01:02 PM
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SB64
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I have an early 69 (10/68) are there frames other then 69 that will work. If so, do I need to be concerned about the car being built in early 69. May go for another frame and was looking for some info. Thank you
Old 12-22-2013, 01:41 PM
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Alan 71
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Hi r,
You can certainly use a 68-72 frame.
There's a small difference between the 68-69 frame.... for 69 a diagonal brace was added to the frame rail on each side at the 'kick-up'.
The frame differences became more involved as the rubber bumpers were added to the cars.
Regards,
Alan
Old 12-22-2013, 03:31 PM
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68/70Vette
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In 1980, I bought a replacement frame from GM for my 1969. So I ordered a 1969 frame. Several years ago, I decided to build up this frame for my 70. Removing front bumper brackets from my 70, I discovered they would not bolt up to the "69" spare frame I had ordered. A slight difference, but still no bolt up. I discovered, thanks to the help of people at Volunteer Vettes, that if you ordered a spare frame in 1980 for a 69, you would get......I forget now......either a 72 or a 73 frame...I can't now remember which. So I have a 72 or 73 frame and it's not quite the right frame for a 70. Actually it's only a couple of bolt holes that make the difference...a body shop will have no problem bolting up my 70 parts to whatever frame I have... Drilling a couple of holes, welding on a nut, etc.. Now that I've had some time to think, I think my "69" service frame is really a 73. For sure a 68 to 71 frame is OK. Probably a 72 frame also.. A 73 frame can be easily modified. For a 74 frame..forget it.
Old 12-22-2013, 09:12 PM
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Originally Posted by 68/70Vette
In 1980, I bought a replacement frame from GM for my 1969. So I ordered a 1969 frame. Several years ago, I decided to build up this frame for my 70. Removing front bumper brackets from my 70, I discovered they would not bolt up to the "69" spare frame I had ordered. A slight difference, but still no bolt up. I discovered, thanks to the help of people at Volunteer Vettes, that if you ordered a spare frame in 1980 for a 69, you would get......I forget now......either a 72 or a 73 frame...I can't now remember which. So I have a 72 or 73 frame and it's not quite the right frame for a 70. Actually it's only a couple of bolt holes that make the difference...a body shop will have no problem bolting up my 70 parts to whatever frame I have... Drilling a couple of holes, welding on a nut, etc.. Now that I've had some time to think, I think my "69" service frame is really a 73. For sure a 68 to 71 frame is OK. Probably a 72 frame also.. A 73 frame can be easily modified. For a 74 frame..forget it.
I bought a 73 frame to replace my 72 frame and there were indeed differences in the front bumper brace mounting holes. IIRC I drilled one new hole on each brace and elongated another existing hole on each side to get the braces to fit. No other problems with body mounts or rear bumper. I examined frame drawings for solid and rubber mount (73+) frames and the newer frames had the mounts lowered by ~1/8" so there isn't an issue if you decide to use either solid or rubber mounts.

A 74 frame is actually the same as a 73 (info from a restorer) but it has plates welded to the rear section for the first energy absorbing bumpers. If you cut those plates off you have a 73 frame. 74 and later frames had a different rear section that is not easily modified.



Rick B.

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