OK Two diffrent style grill on my 1970 Vert.....never realy bothered by it but would like to make it correct....is one early and the other late...bad repro, or wrong year....any idea's? also the bolts that are in the airflow area of the grill look like they should be attacthed to something...sone sort of bracket to stiffen these up..kinda loose...obviously the big pan heads dont belong there, and there are some svrews missing....would like to fix it up so that it is correct....any help...realy appreceated!!!!!
                                              


(consolidated two thread pics)Adams' Apple2008-04-24 05:30:11

Purchase the '70 assembly instruction manual (AIM) and take a look at the stock set up.  The AIM will ist the part numbers of the original grilles and you might be able to check those against what you have found on the car.  If memory serves, 70 grilles had the visible screw heads for mounting.  71 and 72 do not have the screws.  Don't quote me on that.  6880Mike2008-04-24 05:18:48

Its the other way around, Mike. The '70 had studs that poke out the rear , and are attached with nuts. The VERY LATE '70 thru 72 had the screws. The Grills are VERY hard to find, but I see them pop up from time to time.

My 71 has is held with screws as well.

[QUOTE=MikeMc71]...Its the other way around, Mike. The '70 had studs that poke out the rear , and are attached with nuts. The VERY LATE '70 thru 72 had the screws....[/QUOTE]

 What are the holes on the inside center of the grills next to the vertical 'bumperettes' for? They're on my '71 but not screwed to anything, which doesn't surprise me. There lots of thing not screwed to anything on my Vette, like the nut behind the wheel. longhorn2942008-04-24 16:08:34

Thanks Guys, There are a few other things that I would like to get correct...washer pump ...and weather to have the headlight wash set up or not,...and a few others...Sometimes parts are mentioned as Early 70 or late 70.......this must have been a year that a lot of changes took place, How can I tell if my car is conscidered an early 70 or late 70, window pillar #194670s415457 Thanks again

[QUOTE=engineguy63]...Sometimes parts are mentioned as Early 70 or late 70.......this must have been a year that a lot of changes took place, How can I tell if my car is conscidered an early 70 or late 70, window pillar #194670s415457 Thanks again[/QUOTE] 6880Mike2008-04-25 07:06:31

I agree with Mike, the AIM and NCRS guides are valuable guides. Please remember the NCRS guides are just that, guides. They are admittedly wrong in some sections, and leave no room for anomalies that did happen during production. NCRS is aware of this, and keeps working to change some of these problems.

MikeMc71 is correct about the studs.  They were used through most of the 70 model year.  The 71+ style uses an oval head screw where you have the big pan heads.  The later ones are available in repro for almost $450.00 each, and are considered replacements for 70.  I have talked to people who bought the new style, then sent them to a company that filled the holes, installed studs, and rechromed them.  That must have been cheap!  I keep hoping for a good repro, as I need a pair for my 70 LT1 car, which has been sitting patiently waiting for attention for about 10 years.

The screw holes you mention are for a bracket that holds the grill to the bumper guard.

You should also install the headlight shields.


Larry-->