i got a 1985 camaro z28 posi 92k original miles guy who sold it to me said tranny was rebuild 2 years ago.....recently i went to palos verdes in LA i went up hill and my car lagged to go up in drive, so i dropped the gears(automatic) and it ran good.....the next day i warmed up the car and put it to drive and a pop noise came from the back...it does this when i swicth it to reverse and drive and the car moves to the side when i do that.......what could it be?

 

My '87 iroc goes into gear hard when i put it in drive or reverse but the tranny in it was never rebuilt(64k orig. miles) so does my sister's '89 formula (92k)- it kinda feels like the car jumps to the side. As for the pop the first thing to check is the u-joints.

 

now when your saying it moves to the side is this when you are driving down the road as in it swervs upon acclerating?? or when your puttin git in reverse or drive gears?

 

you guys may wanna check all your engine/tranny mounts, and your springs in the rear, check your torque arms bushings too.

 

it does it when i but it in gear.....my friend told me to check the u joint....does it become loose in time or it was cuss i drove it to the hills......it runs good but i think that problem is killing my power....before i could burn out by just stepping on the gas now i could berly make a burn out by power braking....

 

I think it may kill power. My car does the jump when I put it in gear too. It has a 350 and I can't even power brake it on dry pavement .

I always assumed it was the transmission, but I never had any problems with shifting while driving so it could definitely be something else.

 

The noise is most likely from excess play in the rear end, U-joints, and play within the transmission itself. The 1982-1986 transmissions did not have forward accumulators, thus the harsh neutral to drive engagement. The 1987 & up units had a much better neutral to drive engagement and the neutral to reverse engagement was softened in the 1987 & up units also.

 

he's right

 

Yeah, what they said, and I didn't think of the torque arm before. If the bushings are sloppy or the bolts have vibrated & come loose that could explain the jump and the power loss at the same time.