Help with 1970 4-5-4 emblem placement

[Marc K.]

Does anyone have a hood with the "4-5-4" emblem numbers removed? I'm looking for dimensions of the placement pin holes.

On my hood, I can see no sign of these holes being filled and painted over.

From the pad stamping and some, but spotty, owner history, I have to believe my LS5 car has the original motor, but it seems the hood must have been replaced at some point or another during one of the gaps in my history hunting.

By the way, the TIM&J says, "On cars equipped with the 454 engine, the special bulged hood has 4-5-4 on each side of the bulge." Does this mean all cars, or did some not have the numbers? Thanks!

[Thomas H.]

Re: Help with 1970 4-5-4 emblem placement

Marc,

All 454 cars had the emblems. The LT1 cars had the bulged hood, but with stripes and an LT-1 decal.

I don't have the exact measurements, but could probably try to get some off of my hood if needed. I'm sure some one on here can come up with the correct dimensions.

Tom

[Rick B.]

Re: Help with 1970 4-5-4 emblem placement

My original hood is currently off as I am about to re-mount the "4-5-4" emblems.
Tell me exactly where/what you'd like in the way of dimensions and I will get those measurements for you.

Rick

[Rick B.]

Re: Help with 1970 4-5-4 emblem placement

Marc I am happy to help out any way I can however in looking at the hood the obvious dilemma is going to be where to take the measurements from and what to use as a benchmark.
Depending on how much of a rush you are in to get it, I could trace a stencil out for you on paper and mail it to you, however obviously we'd be looking at a bit of a delay for you to receive it.
Also, are the emblems you are using original? I am concerned there could be some deviation between the original ones and any subsequent reproductions. I know my neighbor bought a set of numbers from a well-known corvette supply store and his only had the mounting posts on which the pal nuts were fastened - his did not have the additional "placement" pins that are smaller in diameter.

Rick

[Marc K.]

Re: Help with 1970 4-5-4 emblem placement

Rick, Thanks for the reply. I know what you are saying with the benchmark for placement. I've been looking at this for a while, and there seems to be no obvious place to anchor a measurement.

Off of the chrome "eyebrows" is a bit subjective, as is the place where the hood cove feathers distally into the rest of the hood is as well. I was hoping for a pencil shaded template from around the entire area.

Like your neighbor, I have a set of numbers from a well known supply house, and you're right, they don't have the placement pins, just the mounting posts. I'm still searching for an NOS set.

I'm in no hurry, and if you are somehow able to produce a paper template, I'd owe you one. Thanks.
Marc

[Marc K.]

Re: Help with 1970 4-5-4 emblem placement

Rick, come to think of it, if you were able to take a fairly high resoultion photo of each side, I should be able to reduce/enlarge the picture and get everything lined up just about right, as a template.

These holes will be tough to drill regardless. If you can help, here's my email: mkkrol@yahoo.com. Thanks.

[Kevin G.]

Re: Help with 1970 4-5-4 emblem placement

Just as a note to remember:

Factory installed "4 5 4" numbers were never in a perfect straight line. If you have a chance to see an original hood hold a piece of paper or straight line across the tops of the numbers. You should find them off just a bit.

[Rick B.]

Re: Help with 1970 4-5-4 emblem placement

Marc, I will work on sending you those photos today.

Rick

[Rick B.]

Re: Help with 1970 4-5-4 emblem placement

Marc, I have attempted to illustrate the general placement of these emblems as it occurs on the driver's side of my hood. The passenger side is identical but in reverse order obviously due to the placment of the last number "4". I know my hood and the emblems to be original and so these are as they came from the factory.
My numbers are remarkably straight - both when a straight edge is placed along the bottom or tops of the numbers.
The top edge of the numbers are exactly 1 and 1/8 inch down from the top/crest of the "cowl" or chrome hood insert.
You can also see that in the last photo I used a carpenters straight-edge and found the perpendicular (90 degree) axis created by the driver's side hood edge and the rearward tip of the chrome hood insert to line up perfectly with the leading (or foreward most edge) of the first number "4".
I will provide you more detailed measurements offline in a separate email but physical spacing between the chrome edges of each number appear to be consistent at exactly 1/8".
I hope this gets you started.
Feel free to email me and I will get you what you need in the way of additional photos/measurements.

Rick

[Marc K.]

Re: Help with 1970 4-5-4 emblem placement

Rick,
Thank you so much for the detailed photos and measurements. Your information will help me tremendously.
Marc

[Richard R.]

Re: Help with 1970 4-5-4 emblem placement

Marc the AIM has the exact dimensions that you are looking for. I used the dimensions to drill my hood and it all came out right. Look in the back under the LS-5 pages and you will find them. I laid mine out on a quadrille pad and was pretty simple. A word of caution be carefull about it running uphill or downhill. Hope this helps Reed

[Marc K.]

Re: Help with 1970 4-5-4 emblem placement

Richard,
Thanks. I'm trying to reference as many sources as possible.
Marc

[Doug J.]

Re: Help with 1970 4-5-4 emblem placement

From the AIM...

[Tom L.]

Re: Help with 1970 4-5-4 emblem placement

To prevent from running up or down hill try using brad point bits. They'll probably chip less that std. bits anyway. Have fun!!