Joined
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13 Posts
1970 Cloned SS
400 small block
Turbo 350, w/ shift improver kit
10 bolt 2.73 open to a 12 Bolt 4.10 posi
I bought a 12 bolt rearend for my 1970 chevelle in January and it had 2.56 open. Anyway I was going to put in a new auburn posi and 3.73 gears. It ends up a guy of a guy had a 12 bolt posi with 4.10 gears I got them for 150 bucks. I bought it and had a guy that I was told he was good at setting up rearends put them in. Any way I put the rearend in the car. It makes a whine when I let off the gas and at constant speeds (more or less all the time it makes this whine). I had him listen to it and he said he would look at it next week. So who has been in my situation before? Are the gears screwed up or is the posi unit bad or is it installer?
*The posi works great two solid black marks!
*Boy does it haul *ss, what a change from 2.73 gears
*All the bearings have been replaced
*I get 2nd and 3rd gear scatches every time with the 400 stock motor that is out of a mid 70s impala
*The installer has a pulling truck that he built himself gear change, motor etc, he wins almost all the pulls around here.
I am all ears so any input is appreciate any input
Thanks
Ben Matheny
Team Chevelle Gold Member #214
Kearney Ne
400 small block
Turbo 350, w/ shift improver kit
10 bolt 2.73 open to a 12 Bolt 4.10 posi
I bought a 12 bolt rearend for my 1970 chevelle in January and it had 2.56 open. Anyway I was going to put in a new auburn posi and 3.73 gears. It ends up a guy of a guy had a 12 bolt posi with 4.10 gears I got them for 150 bucks. I bought it and had a guy that I was told he was good at setting up rearends put them in. Any way I put the rearend in the car. It makes a whine when I let off the gas and at constant speeds (more or less all the time it makes this whine). I had him listen to it and he said he would look at it next week. So who has been in my situation before? Are the gears screwed up or is the posi unit bad or is it installer?
*The posi works great two solid black marks!
*Boy does it haul *ss, what a change from 2.73 gears
*All the bearings have been replaced
*I get 2nd and 3rd gear scatches every time with the 400 stock motor that is out of a mid 70s impala
*The installer has a pulling truck that he built himself gear change, motor etc, he wins almost all the pulls around here.
I am all ears so any input is appreciate any input
Thanks
Ben Matheny
Team Chevelle Gold Member #214
Kearney Ne