Will a Stock 489 handle 700hp?
Man good luck what is breaking. What kind of power are you putting to it.
I have tried to describe the noise I am hearing to a couple people who say they have never heard a diff make the gargle noise. I told them it is whining on the high way, and it makes some kind of grumbling, grinding, like a metallic gargle sound under 20mph. When the shop pulled the 742, that was in it after about 150 miles, they said the gears for sure were out and they didn't disassemble it to see if the bearings were wiped, but I imagine with the metallic gargle sound that they are.
The housing was welded on, the guy I got it from had a brace welded onto it. The shop that I had install it the first time said they did it right then wrong, welding intermittently, like 1-2 inches at a time, but then there was also a long like over a foot long weld on it. I assume that it is bent, warped, twisted, or what have you and is not holding everything straight. The guy I got it from keeps telling me to have this checked and that check and have a shop check this and that I have spend over $2,500 over the $2k I bought it for including the $1,500 489 now in it, and I refuse to spend another dime on it. I bought a race 489 from Dr Diff to put in it, @ $1,500 and it made the same noises after 40 miles or so. So I quit driving it. It has made the whining noise once at 50mph for about 5 seconds before I slowed down to 40 and it quit, then when I was 400 yards from the house doing about 15 or so around a 90 degree corner, it made the gargle sound about the same 4-5 seconds. So I parked it and haven't driven it. I haven't even put 150 horses through the first one, and not even maybe 50 if that through the 489 just highway hp. Something is not lined up right inside it I'm certain.
