Topless69
Well-Known Member
After seeing under the hood, I’d say beavers.
Well, I was thinking along those lines too but I imagine they got it cleaned up pretty well from the sound of their efforts. But those are also very good suggestions on the exhaust head pipe, flex plate, and the driveshaft length. Get the car up with full weight on the suspension and confirm you’ve got around an inch or so between the u joint yoke and transmission rear seal. Setting up a mechanical oil pressure gauge would be a good idea too. I’ve got the same situation going on right now with main bearing knock in a dodge 239 v6. It’s usually in a low rpm situation with no throttle in neutral after it’s hot and the oil pressure bottoms out. It’s way past rebuilding but it’s turned into an experiment of how long one can go before it ends itself at this point.After seeing under the hood, I’d say beavers.
One other thing to check… Make sure someone hasn’t put the wrong driveshaft in this car ! If the driveshaft is to long , the slip yoke is being shoved up to far on the output shaft, slamming the slip yoke into the back of the output shaft ! That could be why it doesn’t do it with the car in the air ! Some thing else to look at Sir !
Oh wow, you had me at Dart Sport! Does it still have those tires and wheels on it and are they showing any signs of rubbing anywhere? But you also mentioned the 9 inch. Good chance the driveshaft length isn't correct. I had a 1980 firebird that had too long of a driveshaft in it that did the same thing.
After seeing under the hood, I’d say beavers.
Well, I was thinking along those lines too but I imagine they got it cleaned up pretty well from the sound of their efforts. But those are also very good suggestions on the exhaust head pipe, flex plate, and the driveshaft length. Get the car up with full weight on the suspension and confirm you’ve got around an inch or so between the u joint yoke and transmission rear seal. Setting up a mechanical oil pressure gauge would be a good idea too. I’ve got the same situation going on right now with main bearing knock in a dodge 239 v6. It’s usually in a low rpm situation with no throttle in neutral after it’s hot and the oil pressure bottoms out. It’s way past rebuilding but it’s turned into an experiment of how long one can go before it ends itself at this point.
Front U-Joints? I had some VERY noisy ones once.
I knew a guy that took a A/C duct rated 24" HD zip tie to a buddies driveshaft.... and NO, not mine... People know better, if they know me.... and AIN'T NO WAY I would mess with someone's Ride ...Gosh, could be lots of things. ANY noise at all in park or neutral? How about when you are idling in drive and load the brakes? A video with some GOOD audio might help.
Great Score. Did you have the drive shaft out when checking it? I don't know your skill set but a frozen u joint wont have play in it but has the potential to make a banging sound once driving.Just a thought. Also maybe unplug and cap your brake vacuum booster hose and see if it still stalls out. Just don't get yourself hurt.but we know for a fact that it's not the driveshaft.
Like many others who "liked" this one, I'm with Steve. The engine or transmission mount is broken. The engine one definitely creates a thud that goes through the frame and will feel under foot. I've had one.Check motor mounts etc, the exhaust could be "rocking" with engine.
Pop hood and have someone watch while u put it in gear.
Great Score. Did you have the drive shaft out when checking it? I don't know your skill set but a frozen u joint wont have play in it but has the potential to make a banging sound once driving.Just a thought. Also maybe unplug and cap your brake vacuum booster hose and see if it still stalls out. Just don't get yourself hurt.
I wish I scored that. I would covert it to a Demon style look but that's just me. Great car as is to play with.
Years ago, 1973 Gremlin 304 automatic, developed knocking under feet like 2 hammers drumming on the floor. Neck on torque converter was broken.
Like many others who "liked" this one, I'm with Steve. The engine or transmission mount is broken. The engine one definitely creates a thud that goes through the frame and will feel under foot. I've had one.