70 Chevelle performance project - Page 32 - Lateral-g Forums

Che70velle · #**311** 03-05-2016, 08:12 PM

Update...
I've logged 91.5 miles on the car. It rides great, runs strong, although I haven't really got on it yet, and turns heads. Never goes over 195 degrees, and stays at 180ish while driving. My radio has a really annoying high pitched whine, while running. The Flowmaster mufflers are painfully droney, and actually a little too loud for what I want this car to be, so they are off, and I installed some Borla ProXS units. In all the sound clips I listened to, they sounded great.
Here's what I'm dealing with currently. The 12 bolt that I bought came with a posi unit. The unit looked clean, and had been rebuilt, so I installed it. The rear end was buttoned up, but while moving the car around in the shop, I noticed that it chattered, even when pushing it. I figured it must have been dry for a while before I got it, and it would loosen up after a first drive. Ok, that was rear end build number one.
As the build came towards the end, I purchased some Moser axles, a new cover gasket, and lube, limited slip additive, etc. That was rear end cover back on number two.
On first drive the rear end was scarey loud. I mean, I'm not gonna make it home, loud. After some research, I realized that I should have clearanced the axle ends at the c-clips. My pin went in, but it was tight...turns out it was too tight. The axles needed more clearance than I had, so I pulled them out, cut the needed material, and after several ins and outs to find the necessary measurement with my feeler gauges, I once again put the cover back on with a new gasket and lube. I was sure that my clutches were noisy, due to my c-clips offering too much preload on them. That was rear end cover back on number three.
I go for a drive, and it's quiet. Yay! Wait a minute...after twenty minutes it gets noisy again. Now I'm aggravated. Back in the shop, and I pull the posi out, and inspect the clutches. They look ok. Light wear in the center of the disk, but not bad at all. What gives? So I talk to a friend of mine who does rears for a living. He gives me some advice, and put it back together. I go to run a tap on my ring gear holes to get the hardened red loctite out, and guess what happens? Yep...broke a tap off in the ring gear. Yay...so, I drive down to Summit, and buy a new ring and pinion, lube, LS additive, gasket, etc...put it back together for the fourth time.
My rear end guys advice was to simply drive it. Find a parking lot and do circles and figure 8's left and right. These units need a break in, So last Saturday I went down to a big parking lot, and did just that. I spent 20 minutes solid going in tight circles, and eights, both forward and backwards. No cars around at all, so I loosened it up as much as I could. Left out of there, and so far so good....Almost home and it's noisy as before. I'm over this by now!
Pull it in the shop, totally gut the rear again, and I order a new Detroit TrueTrac. I go to install it this past Thursday, and I realize I've made a mistake. The posi unit was a 4 series. It had a 4.10 gear on it when I got it, so I put a 4 series 3.73 on it...no problem. Weeeeeellllllllll.......I ordered a 3 series Truetrac, in my hurry to just finally get this rear end disaster behind me. So, I've got another 3.73 on order...in a 3 series.... I am not putting a ring gear spacer in my car....And lube, and gasket, etc. This will be rear end cover back on number 5!!!! On the plus side, I can set up a ring and pinion with my eyes closed now! That's hot rodding!!
More later!

**GregWeld** · #**312** 03-05-2016, 09:08 PM

Scott - Great post! Hysterical!

The high pitched wine is most likely the alternator... or plug wires.... and there are FILTERS you can put in line on the power to the radio that may help. Look in to it. Also - is it well grounded?

Glad the car is coming along well!! You'll shake all those bugs out in no time.

Che70velle · #**313** 03-06-2016, 12:52 PM

Quote:

Originally Posted by GregWeld

Scott - Great post! Hysterical!

The high pitched wine is most likely the alternator... or plug wires.... and there are FILTERS you can put in line on the power to the radio that may help. Look in to it. Also - is it well grounded?

Glad the car is coming along well!! You'll shake all those bugs out in no time.

Thanks Greg. I'm having fun, regardless of how aggravating it can be. I'm really looking forward to taking my dad for a ride in this junker.
I did a google search regarding the radio noise a couple of weeks back, and yep, the filters are out there. I installed a boat load of car stereos back in my teenage years, and never experienced this before. Car is grounded exceptionally well. I'll figure it out...what are you doing on here anyway? You have a move in date with a new home!

**Flash68** · #**314** 03-06-2016, 01:30 PM

Dang that's painful Scott!

How about some sound clips of the Dronemasters?

**GregWeld** · #**315** 03-06-2016, 04:16 PM

Quote:

Originally Posted by Che70velle

Thanks Greg. I'm having fun, regardless of how aggravating it can be. I'm really looking forward to taking my dad for a ride in this junker.
I did a google search regarding the radio noise a couple of weeks back, and yep, the filters are out there. I installed a boat load of car stereos back in my teenage years, and never experienced this before. Car is grounded exceptionally well. I'll figure it out...what are you doing on here anyway? You have a move in date with a new home!

MARCH 14/15/16th !!!

Hope to sleep there on the 15th!!

EEEEEHHHHHAAAAAAA

Then I can get my life back to normal!

**WSSix** · #**316** 03-06-2016, 07:07 PM

Congrats, Scott. Sorry to hear of the rear end trouble though. That's one of those areas where I take my time and am super anal about getting the mesh where I want it to be. So far, I love my TruTrac. I can feel it working with tight turns from stop. It seems to engage well under load too. I only have a couple hundred miles at most on the gears and posi so far. I need to go do a nasty burnout now that I think about it. BRB

Che70velle · #**317** 03-06-2016, 08:00 PM

Trey, pictures of said nasty burnout, or it never happened!!!
I put a TrueTrac in my brothers truck a couple years ago, and he's super happy with it. I just want to drive the clunker without any issues. Hoping this is the last time I ever see the inside of that 12 bolt!

**WSSix** · #**318** 03-07-2016, 11:54 AM

lol, no gauges or seats right now unfortunately. I do need to do one though just for the hell of it. I'll post a picture eventually.

SSLance · #**319** 03-07-2016, 01:32 PM

Hey Scott, look at the bright side...at least your rod bolts aren't banging off your windage tray...

Been there done that with the rear end attempts, only I was too cheap to step up to the True Trac. I'm sure that move is coming soon enough though.

Good luck ironing out the rest of the kinks, it's hot rodding...there are bound to be teething pains, but it'll be worth all the effort in the end.

Che70velle · #**320** 03-07-2016, 05:14 PM

Quote:

Originally Posted by Flash68

Dang that's painful Scott!

How about some sound clips of the Dronemasters?

Flash I'm sorry, the mufflers are currently on the shelf, and new Borla's are installed....which I haven't heard yet....
I am flowmasters biggest fan. I've bought 5 sets, and an oddball single through the years for cars and trucks I've had...still have a couple of them...The sound is hard to beat in my opinion, at full throttle, but man...I thought my wife's mustangs used to drone. They don't hold a candle to what I just had on this Chevelle. And this car is Hushmatted pretty well! This is my first LS powered build, so I'm learning as I go.
I failed to record a sound clip of the droning. Now that I think about it, if I had of tried to record this, all you would be able to hear was my posi rear end going clickedy clunkedy, pop pop pop...LOL!