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#1
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1970-2 vs 1973 rear bumper brackets
Until I can find a usable set of '73 rear bumper brackets, can one use the '70-2 repro brackets and mount it?
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So long, farewell. |
#2
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Never done it but I can’t imagine way you couldn’t
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#3
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Yup. I've done it and they fit fine.
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#4
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Good to know. Hopefully I can find the correct one(s) to replace. Maybe only the nut retainers are missing.
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So long, farewell. |
#5
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The big gotcha with the brackets is if they aren't straight to begin with they are a bear to try to fix. I'd say keep the early set on until you can find a near perfect set to save yourself some headaches.
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#6
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No one will notice you have the early brkts. Unless of course you tell them.
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#7
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The quarter panel side brackets sat on 4 "Paint insulators" as we called them at the dealer. One for each bolt, 2 per side.
Factory ones ( you can see them in assy manual, and Parts too), were a thin foam. These did do the job of protecting the factory paint the first time bumper was installed. The big clips on these side brackets can easily make a deep scratch and let any water to the metal ( even a hand wash in driveway) . A couple remedies I have used are Electrical tape, and Gorilla tape cut into squares. The originals were a slight sticky back. We had a roll of whatever GM sent us, but it was about as rugged as the foam. SO, If you have some fresh paint, I would recommend Protecting it!
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
#8
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Quote:
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#9
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73 Rear Brackets
Mike, I have an extra set of the taller brackets off a 73 Firebird.
Send me a PM. |
#10
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Quote:
Already have some squares made...
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So long, farewell. |
The Following User Says Thank You to Held for Ransom For This Useful Post: | ||
#11
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I swap the end brackets side to side it allows you to get a wrench in from the bottom to give that extra little movement to tweak the bumper fit/tilt on the ends
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#12
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Anyone know what the OE plating/paint is on the brackets?
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So long, farewell. |
#13
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does anyone have length measurements to identify which is which?
Asking for a friend who might have brackets, but doesn't know how to identify one from the other.
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1970 Formula 400 Carousel Red paint on Black standard interior A no-engine, no-transmission, no-wheel option car. Quite likely one of few '70 Muncie three speed Formula 400's left. 1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing) 2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs) |
#14
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I have a few sets, but not right here in front of me. The DO have Part numbers, which I would look at because I have seen used ones as a "mixed" set, which isnt good.
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
The Following User Says Thank You to Formulabruce For This Useful Post: | ||
#15
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What did you choose to make them out of Mike? My Buddys 70 will be needing some, and he wants more than my 2 options, TY
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
#16
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Never new the 73 were different .what was the reason
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#17
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the bumper standards changed for 1973.
That's why: 1) 1973 cars have a different front bumper 2) all 1973 cars had rear bumperettes
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1970 Formula 400 Carousel Red paint on Black standard interior A no-engine, no-transmission, no-wheel option car. Quite likely one of few '70 Muncie three speed Formula 400's left. 1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing) 2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs) |
#18
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Yes makes sense now thanks for your reply
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#19
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Quote:
The 73 Firebird bumpers were spaced about 1" further away from the body for collision protection. (if I remember correctly)
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#20
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Quote:
No actual lengths yet, but the difference was around an inch. Stamped part numbers (if readable) is 477xxx for the 1970-2 and 488xxx for the 1973. If still on the bumper, I would look for the dimples on the brackets around the license plate. I circled things that may indicate a '73 set. This thread may help too. https://forums.maxperformanceinc.com...d.php?t=767670
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