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| | |-+  Sub-frame to Radiator Support mtg. holes-Front one ever used?
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Author Topic: Sub-frame to Radiator Support mtg. holes-Front one ever used?  (Read 2318 times)
68camaroz28
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« on: August 10, 2010, 05:10:04 PM »

The top front section of the sub-frame has three holes of which normally the middle one is utilized for mounting the radiator support. Today I noticed on our sub-frame it surely appears the front hole location was used. You can clearly see where the washer/rubber mount were as that area is pretty clean but slight pitting around the area that the washer/rubber mount did not cover. Sure they put three holes there for a reason so can only assume some cars had different holes used for some reason. Anybody run into this or? How did they determine what hole to use? Started to mount the front fenders and placed the rad. support in the middle mtg. hole but noticed the rad. support seemed to be leaning forward and then noticed it sure looks like the front mtg. holes were used.
thanks in advance,
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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
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R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
68camaroz28
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« Reply #1 on: August 11, 2010, 04:51:03 AM »

Can anyone check their cars for sub-frame mtg. hole location used for radiator support?
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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
stovebolt
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« Reply #2 on: August 11, 2010, 06:37:38 AM »

The front holes are used on mine. My car has never been taken apart so rest assured that that is how the car was factory assembled.
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My68SS
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« Reply #3 on: August 11, 2010, 09:11:54 AM »

Mine ['68 model] is also using the front holes, however a '69 chassis I have seems to have used the middle holes.
Impossible to use the wrong holes as the inner guard holes won't match to the rad support as well as lower valance bracket.
On the assembly line, the entire front clip was pre-assembled and moved onto the chassis/body as a complete assembly. The radiator support would then automatically line up with the correct holes.

69'ers, can you confirm, middle holes or front holes?
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Rob
1968 L34/M40 SS
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tom
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« Reply #4 on: August 11, 2010, 11:54:00 AM »

Could the other holes have been used for other mopdels with the sam subframe, but different sheetmetal like the firebird or nova?
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69 X11 Z21 L14 glide
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firstgenaddict
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« Reply #5 on: August 11, 2010, 01:50:33 PM »

could be for a firebird or a X Body rad support.
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James
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68camaroz28
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« Reply #6 on: August 12, 2010, 06:06:15 AM »

The top front section of the sub-frame has three holes of which normally the middle one is utilized for mounting the radiator support.

Sorry about the above statement as that is untrue........ Completed searches both here and the camaro.net and everything I found was the front hole has been the only one used. As mentioned, maybe the Nova, firebird, or for some type of location during sub-assembly or?Huh GM had a reason to put those 3 holes in there Smiley
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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
L78 steve
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« Reply #7 on: August 12, 2010, 04:20:57 PM »

Other holes are for Nova.
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69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
Frank350
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« Reply #8 on: September 08, 2010, 06:27:20 AM »

I can confirm you guys that Firebird uses the front hole as well.  Frank.
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69-er
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« Reply #9 on: September 22, 2010, 02:03:37 PM »

For what it's worth, a 68 Firebird I am working on is using the middle holes.
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My68SS
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« Reply #10 on: September 24, 2010, 01:28:40 PM »

For what it's worth, a 68 Firebird I am working on is using the middle holes.
Well that throws a spanner in the works! Smiley Seems to be in contradiction to Frank350 and I would have thought for sure that 68 firebird would be the same as 68 camaro  Huh

So it seems the 69 chassis I have was originally from a Nova - middle hole used and a elongated rear hole on the LH side
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Rob
1968 L34/M40 SS
12 bolt posi 3.55
Build - 12C
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