'68 or '72?
Thread Starter
Le Mans Master
Joined: Aug 2010
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From: Bussey, IA
'68 or '72?
I am rebuilding a 1968 Corvette Coupe 327/4 speed. It is a total frame off. It does not have the original frame and I am 99% sure that the frame is a 1972 coupe frame. My question comes as I look to replace the brake lines - do I use a 1968 crossover and brake lines or 1972 lines? Does it make any difference? 
Drifting
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From: Deerfield Illinois
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Andy
Early 68 frames have non gusseted frame kick ups in the rear, one easy sign you have a 68 frame. Although they are slightly different from 68-72, I do not believe there is a difference in the brake line crossover. I would keep it as much 68 as humanly possible. Also check when you do front wheel bearings that you do not have 69 front spindles.
Early 68 frames have non gusseted frame kick ups in the rear, one easy sign you have a 68 frame. Although they are slightly different from 68-72, I do not believe there is a difference in the brake line crossover. I would keep it as much 68 as humanly possible. Also check when you do front wheel bearings that you do not have 69 front spindles.
Team Owner
Joined: Sep 2006
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From: Westminster Maryland
Hi A,
I believe you'll find the rear cross-over brake line is the same for 68-82 frames as m stated.
However this isn't true for some of the other brake lines.
Regards,
Alan
I believe you'll find the rear cross-over brake line is the same for 68-82 frames as m stated.
However this isn't true for some of the other brake lines.
Regards,
Alan
Last edited by Alan 71; Jul 21, 2016 at 08:14 AM.
Is my vette stock?? HAHA
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I would replace all the lines with 68. When you buy them some parts will say 68 thru whatever and others will be 68 only. My reasoning is it will be easier for you later on down the line to replace parts if you don't have to remember which parts werent 68.
Team Owner
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From: Southbound
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Your frame has a VIN derivative stamped in two places on the top of the frame rail, driver's side. First position is about where your hip would be if you were in the car; second position is back by #4 body mount. The VIN derivative will tell you the model year of your frame.
I did your homework for you and compared the 68 and 72 AIMs for brake line installation. The only major difference is the position of the brake pressure differential switch and the lines running to and from it. Either year will work with the frame. Your choice is to go with all 68 and the 68 switch location or all 72 and the 72 location.
I did your homework for you and compared the 68 and 72 AIMs for brake line installation. The only major difference is the position of the brake pressure differential switch and the lines running to and from it. Either year will work with the frame. Your choice is to go with all 68 and the 68 switch location or all 72 and the 72 location.
