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Mod | | | Forums66 Topics128,059 Posts1,055,820 Members48,426 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Sep 2007 Posts: 393 'Bolter | | 'Bolter Joined: Sep 2007 Posts: 393 | I've just had my radiator rebuilt and am freshening up the whole radiator support area (1947 AD 216) I have done a lot of searching on the site but am uncertain about the orientation of the bolts that attach the radiator support to the cross member. I have read and seen that they either go down (i.e. head up) or upside down (i.e. head at the bottom. Is there a right way or does it matter? I believe the bolts are 2 inch carriage bolts. (I don't trust some of the things the previous owner(s) have put on the truck.) Any help greatly appreciated. Thanks.
It's a small world, but I wouldn't want to paint it.
| | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Thanks, DADS50
That is a different mount from mine.
I do not know which year used which mount. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | | | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | | | | | | Joined: Jan 2013 Posts: 1,384 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 1,384 | Rule of thumb: If you put the bolt up from the bottom and the nut falls off, the bolt drops out and everything falls apart.
If the bolt goes in from the top and the nut falls off the bolt stays in place. Everything is loose but doesn't fall apart. | | | | | Joined: Apr 2015 Posts: 336 Shop Shark | | Shop Shark Joined: Apr 2015 Posts: 336 | The rule of thumb I use is: bolt down, bolt head in direction of rotation, bolt head forward in direction of driving. This is unless the only way to insert bolt head is in the opposite direction.
1959 3100 Apache Fleetside
| | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | The center mount support has no nuts, it uses a threaded plate
The bolt can only go up from the bottom.
The support on my 50 1/2 ton has two mounting points
The bolt can come from the top and is held in place with nuts. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | DADS50, You are correct, 1947-48 mounts were different from 49-55st. Can you find an illustration for the earlier radiator mount? http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0102.htmMaybe someone will post links to photos (or, if you have already posted some, would you post the links again?). The FAM is for 54/55st. Thanks, | | |
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