I need to reset my pinion angle it sits nose down works okay on the street but hit 90 on the track starts vibrating. I have some 4 degree shims to correct the angle (already running 2 degree ones) but I lose the centering pin with the 4 degree ones, without me killing car and disassembling to measure any one know the size of bolt used in the centering pin I can figure out pin height (head) just need bolt size. Also anyone know a good source for non stock ones that ship to Canada
does speedway motors ship to canada? they should have the pins you need. im not 100% but i think the pins are 5/16s and use the smallest head of the 3 common ones available.
I have same problem. Was planning on cutting my perches off and welding them back on 4 degrees around. Local axle shop will straighten tubes if they warped from the welding for $40. I currently have 6 degrees of shims on and it is even quieter. But mine would vibrate like crazy from around 30 mph on up before I shimmed it.
I was thinking of cutting off perches too probably will eventually my diff housing has been powder coated hate to mess it up
You could prolly use an allen head cap screw (with the head shortened in a lathe or with a saw or grinder) if you could find one with a long enough shank...
Pretty much what I was thinking I live in a rural are not a lot readily available sometimes easier and quicker to make what you need
X 2 on the allen head bolt. Also think they're 5/16's in diameter. As for the height of the head, I doubt you'll find one that's too high, there's a lot of room there in the axle saddle with many saddles. I was fighting the D'shaft vibes too with mine for the longest, and then accepted the fact that what was to be was to be. Then I swapped out the C4 for the current Toploader 4 speed. My vibes have disappeared with the Toploader. Not sure if the change was something wrong with the C4, or just a slight change (possibly) in the angles with the change in transmissions.
What angle did you guys all end up with before your noise went away? And here I thought I have been the only one with this problem all of these years...
my c4 vibrated also. i figured it was an internal problem with it. when i went to my t5 it was gone. i set all my pinion angle 2 degrees down and never have drive shaft vibration problems. for example on mashori's car we built the 9" custom for it with the fox mustang aluminum drive shaft and a t5. he ran in the silver state classic at 140mph for over 15 min. no vibration.
