When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I've seen these a few times on rear axles. got another one with it on. its a 12 bolt Olds from 67, 68 or 69? not sure as the rear was swapped out years ago.
its a small bracket that bolts onto where the bump stop rubber is and raises it up approx 1/2" this rear is not from a wagon and neither were the others. im assuming its to let the rear hit the bumper sooner
I think it's called a pinion bumper - stops the floor pan from slamming into (bottoming out) on the differential after going airborne over a railroad track - if it's what I'm thinking it is.
I think it's called a pinion bumper - stops the floor pan from slamming into (bottoming out) on the differential after going airborne over a railroad track - if it's what I'm thinking it is.
Both of my 66 442's have them. I have always assumed they are to keep the rear end from hitting the frame during a deep compression of the spring and shock.
Those are pretty common on A body Buicks with HD suspension like a GSX, or GS 455. The bumper is the same as any, the bracket(s) limits travel. For Buicks, they appeared on both manual and auto trans w/15" wheels and HD suspension. They're on my 1970 GS 455 auto.
OK I opened up a couple more Assembly Manuals from various years & I think I found the numbers for the "bracket" itself which is now what I believe you want the number for. Give me a couple minutes to find those numbers.
"When accelerating hard or hitting a bump with four passengers in the car, ..."
So a driver and four passengers? Exactly how large are these passengers? Not after an answer, just loving the days of simpler times. Like an old service manual, one that assumes a lick of mechanical aptitude.
So a driver and four passengers? Exactly how large are these passengers? Not after an answer,
Actually, the answer is in the owner's manual. Olds assumed five passengers totaled 750 lbs, six passengers totaled 900 lbs. Yeah, in the 1960s, an average passenger was 150 lbs. It was a lot harder to stuff your face with junk food when you had a cigarette hanging from it.
Actually, the answer is in the owner's manual. Olds assumed five passengers totaled 750 lbs, six passengers totaled 900 lbs. Yeah, in the 1960s, an average passenger was 150 lbs. It was a lot harder to stuff your face with junk food when you had a cigarette hanging from it.
Yes, back when cigarettes were healthy and doctor recommended.
The 1966 rear axle and spring mounting is different from the 1970.
yes I realize that. Where the rubber bumper sits in its slot, I don’t see any difference.
measured both rears side by side. Maybe it was a temporary part number in 66 ? Do those bulletins sometimes get put into regular parts books if they descide that it’s a permanent fix?
yes I realize that. Where the rubber bumper sits in its slot, I don’t see any difference.
measured both rears side by side. Maybe it was a temporary part number in 66 ? Do those bulletins sometimes get put into regular parts books if they descide that it’s a permanent fix?
Then attach a permanent part number to it.
Obviously, those part numbers were not incorporated into the 1970 PIM, as can be witnessed via our posts from the 1970 PIM (above). I reviewed a 1969 PIM and I can attest the part numbers Joe provided are not incorporated into the 1969 PIM. I cannot speak to any 67 or 68 model year PIM.
NOTE: There was, however a difference in Part Numbers for the bumpers themselves for the 1969 model year based upon either a Lansing Build or all other Assembly Plants (compare to the 1970 PIM). Bracket numbers remained same for 69 & 70.
