1970-72 SS Cowl Incuction Hood Original - Chevelle Tech
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post #1 of 6 (permalink) Old Jun 2nd, 20, 3:26 PM Thread Starter
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1970-72 SS Cowl Incuction Hood Original

Anyone have one that maybe is off the car ?..To make a stencil for me where the emblems go?

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1972 SS 454 M22
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post #2 of 6 (permalink) Old Jun 2nd, 20, 5:05 PM
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Re: 1970-72 SS Cowl Incuction Hood Original

Did you contact the Parts Place like I suggested?

If you were to remove the pegs from the rear of the emblems and use 3M Double Sided Automotive Quality Tape you won't have to drill holes in your hood. Plus the CI Emblems were taped to the hood in 1970 anyway. (https://www.bing.com/videos/search?q...6FORM%3DHDRSC3). That way someone with a '70-72 CI Hood can simply measure where the emblems themselves are positioned. Not to mention the fact that unless you are very good at drilling holes in sheetmetal and have a high end drill bit set, you'll mess up the holes, especially if the hood is already painted...

https://www.oreillyauto.com/detail/b.../08069/4462054

FYI: The following measurements came from an original GM 1970 CI Hood in my junk pile.

Passenger Side: Measure from the rear of the hood. The REAR-most holes on both the Passenger and Driver sides are 5 3/8ths inches forward of the rear edge of the hood (no chrome strip). Both holes are more or less equidistant on the slope of the bulge between the top of the cowl hood and the "bottom." IF YOU MUST drill holes use that 5 3/8ths as a starting point. Then take your "COWL" Emblem and measure the distance between the pins -- that distance will be where your second hole would go from the first hole (please, please don't drill holes: use tape). NOTE that the holes are not level, they are offset somewhat up and down-wise from a lateral center line. Once you have the holes for the "COWL" Emblem figured out, the initial hole for the "INDUCTION" Emblem is 8 15/16ths inches forward of the rear edge of the hood. Now, take your "INDUCTION" Emblem and measure the distance between the pegs -- that distance will be where your furthest forward hole would go. There are 3 pegs, measure for each one.

Driver Side: The REAR-most hole on the Driver side is also 5 3/8ths inches forward of the rear edge of the hood. Again, the hole is more or less equidistant within the cowl top to bottom. Use that 5 3/8ths as a starting hole for the "INDUCTION" Emblem. Take your "INDUCTION" Emblem and measure the distance between the 3 pins -- that distance will be where your second and third holes would go. The first hole for the "COWL" Emblem is approximately 12 inches from the rear of the hood. Do your measuring.

It might help to take some blue masking tape and make your own template: plot out where the emblem pin holes go -- double check how much the pins are up or down from a lateral center line. Drill test holes using the tape in sheetmetal or corrugated cardboard before you try making holes in your hood. Redo the blue masking tape and apply it to the hood and drill (if you must).

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post #3 of 6 (permalink) Old Jun 2nd, 20, 7:24 PM Thread Starter
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Re: 1970-72 SS Cowl Incuction Hood Original

Thank you..I just thought maybe with as many hoods that are sold..there would be a stencil kit..I looked at the emblems with the double sided tape I dont care much for the look..my last resort..is trying to get the measurements..buy the repro emblems and cut the pegs off and use the automotive double side tape..I have several pairs of th eoriginals in a boxs but I dont want to cut them..thanks for your help

Quote:
Originally Posted by NickeyChevelle View Post
Did you contact the Parts Place like I suggested?

If you were to remove the pegs from the rear of the emblems and use 3M Double Sided Automotive Quality Tape you won't have to drill holes in your hood. Plus the CI Emblems were taped to the hood in 1970 anyway. (https://www.bing.com/videos/search?q...6FORM%3DHDRSC3). That way someone with a '70-72 CI Hood can simply measure where the emblems themselves are positioned. Not to mention the fact that unless you are very good at drilling holes in sheetmetal and have a high end drill bit set, you'll mess up the holes, especially if the hood is already painted...

https://www.oreillyauto.com/detail/b.../08069/4462054

FYI: The following measurements came from an original GM 1970 CI Hood in my junk pile.

Passenger Side: Measure from the rear of the hood. The REAR-most holes on both the Passenger and Driver sides are 5 3/8ths inches forward of the rear edge of the hood (no chrome strip). Both holes are more or less equidistant on the slope of the bulge between the top of the cowl hood and the "bottom." IF YOU MUST drill holes use that 5 3/8ths as a starting point. Then take your "COWL" Emblem and measure the distance between the pins -- that distance will be where your second hole would go from the first hole (please, please don't drill holes: use tape). NOTE that the holes are not level, they are offset somewhat up and down-wise from a lateral center line. Once you have the holes for the "COWL" Emblem figured out, the initial hole for the "INDUCTION" Emblem is 8 15/16ths inches forward of the rear edge of the hood. Now, take your "INDUCTION" Emblem and measure the distance between the pegs -- that distance will be where your furthest forward hole would go. There are 3 pegs, measure for each one.

Driver Side: The REAR-most hole on the Driver side is also 5 3/8ths inches forward of the rear edge of the hood. Again, the hole is more or less equidistant within the cowl top to bottom. Use that 5 3/8ths as a starting hole for the "INDUCTION" Emblem. Take your "INDUCTION" Emblem and measure the distance between the 3 pins -- that distance will be where your second and third holes would go. The first hole for the "COWL" Emblem is approximately 12 inches from the rear of the hood. Do your measuring.

It might help to take some blue masking tape and make your own template: plot out where the emblem pin holes go -- double check how much the pins are up or down from a lateral center line. Drill test holes using the tape in sheetmetal or corrugated cardboard before you try making holes in your hood. Redo the blue masking tape and apply it to the hood and drill (if you must).

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1972 SS 454 M22
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post #4 of 6 (permalink) Old Jun 2nd, 20, 8:29 PM
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Re: 1970-72 SS Cowl Incuction Hood Original

Quote:
Originally Posted by Bandit1978 View Post
Thank you..I just thought maybe with as many hoods that are sold..there would be a stencil kit..I looked at the emblems with the double sided tape I dont care much for the look..my last resort..is trying to get the measurements..buy the repro emblems and cut the pegs off and use the automotive double side tape..I have several pairs of th eoriginals in a boxs but I dont want to cut them..thanks for your help
Drill holes if you must. The originals used Double Back tape from the factory. Use the measurements I listed to make your own template.

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post #5 of 6 (permalink) Old Jun 3rd, 20, 11:43 AM Thread Starter
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Re: 1970-72 SS Cowl Incuction Hood Original

Quote:
Originally Posted by NickeyChevelle View Post
Drill holes if you must. The originals used Double Back tape from the factory. Use the measurements I listed to make your own template.
Thank you..so if I do cut the posts off the repro's do I measure back from the hood edge to the first hole and then to the edge of the lettering?

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1972 SS 454 M22
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post #6 of 6 (permalink) Old Jun 3rd, 20, 5:11 PM
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Re: 1970-72 SS Cowl Incuction Hood Original

Quote:
Originally Posted by Bandit1978 View Post
Thank you..so if I do cut the posts off the repro's do I measure back from the hood edge to the first hole and then to the edge of the lettering?
Yes, that would work, measure where the pins are prior to removing them. measure to the first hole, then subtract the distance from the rear edge of the Emblem to the first pin.

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