What size are hood bolts?

Johnny71dusty said

5/16 bolt ? That’s way too small I mean that’s damn near 1/4 inch around this bolt needs to be 1/2 I think as 3/8 too small

Click to expand...

I am just asking here ARE YOU SURE you know your bolt sizes? The bolt size that fits those hoods uses a 1/2" wrench. ONE HALF INCH WRENCH. That is the standard head size for a 5/16 USS bolt. A 5/16 bolt is not "damn near 1/4 inch around" that is, a ONE QUARTER inch bolt is "1/4 inch around."

I'm just askin', OK?

Here's the possibilities:

1....You need a 5/16 bolt with a 1/2" head
2.....You need something larger (unknown) because as OldManMopar said, someone may have tapped it larger, (was stripped) or used a helicoil repair

By the way NOBODY on here likely knows more than Steve, OldManMopar. He KNOWS his stuff.