 tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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05-02-24 02:41 PM - Post#2869414
In response to rcr3
The car handled like crap after an alignment , wandered all over, so I made some toe plates and spent the afternoon adjusting tie rods. Car now handles like a new car!  
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tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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05-16-24 08:13 AM - Post#2869922
In response to rcr3
Went on the Mackinac trip and still have the vibration on the freeway.  Ordered new rear springs, and going to do new carrier & pinion bearings. Since the axles & bearings were trashed, those are probably no better.
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tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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05-17-24 07:56 AM - Post#2869976
In response to tommy49
Ordered the bearing kit today. I'll be busy next week and got a car show that Saturday.
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tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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05-31-24 05:18 PM - Post#2870389
In response to tommy49
Installed some Posie 3" drop springs (203-A) a couple days ago. Wanted some standard height and use blocks to adjust the ride height, but Posie's said they don't make those. So, prevent a too low ride height when the new spring settle in, the shackles are flipped down. The springs have already settled an inch.
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tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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05-31-24 05:25 PM - Post#2870390
In response to tommy49
While I was doing the springs, I made some sway bar links to replace the crappy ones that came with the bar.
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tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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08-01-24 06:55 AM - Post#2872285
In response to tommy49
We've been plagued with a few issues and trying to squeeze them in between car shows & cruising. One was a painfully slow AC leak. a restricted airflow from the center AC vent, and that vibration at high speed. The AC leak ended up being the pressure hose between the evap & firewall, the hardest hose to get to. A recrimp of the fitting to hose took care of that. fingers crossed! Modified the back of the center AC vent to reduce the kink in the flex duct. Didn't take pictures of these, but, will post some later. I pulled the rearend apart and found all 4 bearings were galled up, much like the axle bearings. Already had the rebuild kit, so new bearings & races are installed and final assembly is today. This should take care of the vibration. One final note, we've turn over 5000 milesof fun! 
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tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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08-02-24 06:21 PM - Post#2872347
In response to tommy49
Finished the rearend bearing job & took the 49 out for a test ride. No more vibration! Took it up to 85mph and decided I need to spend more time on the freeway, I’ve never had the car at that speed before! 
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rcr3
Site Ambassador -"21st Year" Gold Supporting Member
Posts: 4091
Age: 73
Loc: MANHEIM PA. U.S.A.
Reg: 11-24-02
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08-03-24 05:36 AM - Post#2872353
In response to tommy49
Congrats!!!
'67 Camaro survivor
'06 Z71 Sierra Ex Cab
'37 Chevy cp.SOLD!!6/7/14
'00 S10 Ex Cab BUILT FOR EVERYDAY,NOT JUST THE HOLIDAYS
'73 Nova pro-street project
'17 Chevy Trax LT
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tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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08-03-24 06:30 AM - Post#2872358
In response to rcr3
Thank you! I have to admit, it was a tad unnerving at that speed the first time. 
Edited by tommy49 on 11-14-24 08:35 AM. Reason for edit: No reason given.
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tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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12-23-24 08:43 AM - Post#2876477
In response to tommy49
Well, the vibration saga continue, but there's light at the end of the tunnel! After driving the car more, we decided that we STILL had some vibration, so we took the drive shaft, to a different shop, Valley Truck Parts, to get rebalanced. They found the tube was .015" out of round and they couldn't balance it. It must have been the last drive shaft the other shop built before for they went out of business. So, we had them make a new one. That one made a big difference, but, some vibration was still there. So, that led to checking driveline angles and low and behold, both the trans & read end were off 1,5 deg. Again, so, the 49's getting a driveline makeover, Crossmembers been modified, as well as the 5 other things that affected and I need to shim the rear end. Now the 49 and the Caddy are both up on jackstands for the winter. The fun never stops.
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rcr3
Site Ambassador -"21st Year" Gold Supporting Member
Posts: 4091
Age: 73
Loc: MANHEIM PA. U.S.A.
Reg: 11-24-02
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12-24-24 05:45 AM - Post#2876499
In response to tommy49
Hope you get it figured out!
'67 Camaro survivor
'06 Z71 Sierra Ex Cab
'37 Chevy cp.SOLD!!6/7/14
'00 S10 Ex Cab BUILT FOR EVERYDAY,NOT JUST THE HOLIDAYS
'73 Nova pro-street project
'17 Chevy Trax LT
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tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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12-24-24 08:38 AM - Post#2876507
In response to rcr3
Thought I had it figured out before.
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rcr3
Site Ambassador -"21st Year" Gold Supporting Member
Posts: 4091
Age: 73
Loc: MANHEIM PA. U.S.A.
Reg: 11-24-02
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12-25-24 05:48 AM - Post#2876535
In response to tommy49
Know what you mean.I chased a vibration on my '37 street rod. Finally took the drive shaft to another shop and they found the weight was welded on 180 degrees off. this happened when the orig. shop shortened the shaft.
'67 Camaro survivor
'06 Z71 Sierra Ex Cab
'37 Chevy cp.SOLD!!6/7/14
'00 S10 Ex Cab BUILT FOR EVERYDAY,NOT JUST THE HOLIDAYS
'73 Nova pro-street project
'17 Chevy Trax LT
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Shepherd
Valued Contributor
Posts: 3656
Loc: Lake George, NY
Reg: 11-11-15
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12-27-24 05:25 PM - Post#2876594
In response to tommy49
The angle of the engine/trans is the first thing to check, in our shop we find some installations have 5-6 degrees down angle, which can make it difficult to achieve the proper pinion angle, resulting in driveline vibrations.
Edited by Shepherd on 12-27-24 06:08 PM. Reason for edit: No reason given.
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tommy49
"10th Year" Silver Supporting Member
Posts: 3628
Loc: Kaleva, Michigan
Reg: 09-28-12
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12-28-24 09:35 AM - Post#2876604
In response to Shepherd
When I built the car, the target was 3*, using a manual inclinometer. Now my digital one read 4.5*, an inch difference in the crossmember. I’ll probably go with new perches on the rear.
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