What is this bolt and hole for?

[bigcountry78]

My 78 doesn’t have it. Neither did the 79 imparted out.

I take that back, mine does have a bolt on each fender. I never knew that’s what it was for though.

 

[eskimomann209]

I seen one on a 78 suburban I took parts from. Thought it was weird too.
Almost felt like I wanted one.... then decided it doesn’t seem worth the hassle lol

 

[78C10BigTen]

My 78 has the under hood hole but no firewall post to go in it. I always thought the hole was an optional light fixture provision.

 

[bucket]

I'm beginning to think that the center one was used on Burbs and K5's only, as that's where I remember seeing them. But for sure, '78 was the first year for it. I've had two '77 K5's and neither had it, nor do I recall seeing it on others.

 

[78C10BigTen]

I'm beginning to think that the center one was used on Burbs and K5's only, as that's where I remember seeing them. But for sure, '78 was the first year for it. I've had two '77 K5's and neither had it, nor do I recall seeing it on others.

So all hoods in 78 woulda had that hole??

 

[77 K20]

My old '78 K5 and my '78 GMC K15 didn't have them but my dad's '79 K15 does.

My '77 K20 doesn't have it either.

Doesn't seem to be any rhyme or reason.

 

[78C10BigTen]

Doesn't seem to be any rhyme or reason.

Seems to be the recurring factor amongst these trucks

 

[bucket]

My old '78 K5 and my '78 GMC K15 didn't have them but my dad's '79 K15 does.

My '77 K20 doesn't have it either.

Doesn't seem to be any rhyme or reason.

It's up there with, "why are dogs noses wet" or "why don't European cars have lug studs". Nobody knows.

 

[bucket]

So all hoods in 78 woulda had that hole??

I'm assuming so. Which means an original '78 hood can be determined by the flat front and a hole in the rear center. And an original '77 hood can be identified by a flat front, provision for the inside hood release type safety catch, but maybe no hole in the rear center of the hood. '76 and older would be flat front, no safety catch provision and no rear hole.

 

[78C10BigTen]

I'm assuming so. Which means an original '78 hood can be determined by the flat front and a hole in the rear center. And an original '77 hood can be identified by a flat front, provision for the inside hood release type safety catch, but maybe no hole in the rear center of the hood. '76 and older would be flat front, no safety catch provision and no rear hole.

my 78 silverado has the interior hood release. What year did they do the style line in the hoods front? 80??

 

[bucket]

my 78 silverado has the interior hood release. What year did they do the style line in the hoods front? 80??

'79 was then the style line came about.

 

[bucket]

I just wish there were more original hoods around to prove (or disprove) my theories. But the original 70's hoods were already being replaced in the 80's with the factory superseded '79-'80 hoods.

 

[78C10BigTen]

'79 was then the style line came about.

I actually like them better then flat

 

[bucket]

I actually like them better then flat

I'm indifferent. But having the original flat front leading edge is like a badge of honor these days.

 

[78C10BigTen]

I just wish there were more original hoods around to prove (or disprove) my theories. But the original 70's hoods were already being replaced in the 80's with the factory superseded '79-'80 hoods.

I have what i believe to be a factory style line hood in storage that i pulled from a junk yard truck but i cant remember if it had that hole. Are there any distinct ways to tell originals from aftermarket?