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When a 203 goes bad.?.?.?.?. and I'm pretty sure it gets worse

justhorsinaround

justhorsinaround

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When a 203 goes bad.?.?.?.?. and I\'m pretty sure it gets worse

.....does it go bang when goin from reverse to drive or when takin off from a light or maybe when runnin through the gears. Or is it maybe the Turbo 350 or maybe somethin else. I don't think it's the motor mounts cuz on account the motor doesn't shift when goin from drive to reverse and vice versa. Any thoughts or concepts would be greatly appreciated.
 
Re: When a 203 goes bad.?.?.?.?.

Sorry I forgot to mention the u-joints are fine as I checked and driveshaft is next to brand new. By the way, I forgot to mention that I feel the bang underneath my feet. It almost feels like bad mounts you know like when they bind up and then release with that bang. But like I said earlier the mounts appear to be fine. All the crashing and banging seems to be amidships.
 
Re: When a 203 goes bad.?.?.?.?.

Check the trans mount where the crossmember bolts to the tranny/tcase adapter. If that's loose, that heavy tcase could break the rear of the aluminum transmission. That happen to me twice, but I also did not have the brace from the tcase to the engine. IIRC you don't have that brace either, do ya?
Bob
 
Re: When a 203 goes bad.?.?.?.?.

Might check the bellhousing bolts, adapter bolts, adapter mounting bolts, flexplate /forums/images/graemlins/dunno.gif
 
Re: When a 203 goes bad.?.?.?.?.

mine did all kinds of wierd crap like that when it finally went out, so I took it out and tore it apart and all the gears were toasted... /forums/images/graemlins/pimp1.gif
 
Re: When a 203 goes bad.?.?.?.?.

I had a 203 in my 74 K20 that used to "skip" when you punched it at a red light,or under heavy load(like pushing snow)and it was the chain all stretched out--guess it didnt like the tourque of the 454 I had in it at the time.I got another 203,and it did nearly the same thing,so I finally bought a 205 case from a 72 vintage and swapped it in--no problems with that case except the shifter bolt broke off in the adapter after a few years.I think the second 203 was in ok shape,I'm fairly sure it was the shifter being out of adjustment that made it act up--it worked fine in the truck I pulled it from,someone said it might be the differential gears in the tailshaft that were bad,but I never looked--its still out in my shed where I put it 10+years ago... /forums/images/graemlins/crazy.gif
 
Re: When a 203 goes bad.?.?.?.?.

So is it bad when you hear what really sounds like chain on metal when goin really slow and now a nasty vibration up till about 35? /forums/images/graemlins/whistling.gif

Just checkin to make sure. /forums/images/graemlins/screwy.gif
 
Re: When a 203 goes bad.?.?.?.?.

I'd venture to say that what you are hearing is bad.

I have one here if you need one (unknown condition, but might be better than what you have).
 
Re: When a 203 goes bad.?.?.?.?.

Marv said he had one as well so maybe between the two of them one could make a single good one? What do ya think?
 
Re: When a 203 goes bad.?.?.?.?.

Have someone look under it when you put it in gear and watch the tailshaft mine goes almost a half turn I had the same symptoms


just need to install my 205!!!
 
Re: When a 203 goes bad.?.?.?.?.

[ QUOTE ]
So is it bad when you hear what really sounds like chain on metal when goin really slow and now a nasty vibration up till about 35?

[/ QUOTE ]


Tighten the pinion nut maybe , we both have 12 bolts , and mine was loose and made that noise/vibe , didn't find it until AFTER I got the Cv shaft (needed CV anyway) /forums/images/graemlins/k5.gif

BTW Allan , just to make you chuckle , those 4 degree shims I gave you and would never need , are just what I need for the new truck /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif
 
Re: When a 203 goes bad.?.?.?.?.

[ QUOTE ]
So is it bad when you hear what really sounds like chain on metal when goin really slow and now a nasty vibration up till about 35? /forums/images/graemlins/whistling.gif

Just checkin to make sure. /forums/images/graemlins/screwy.gif

[/ QUOTE ]


I blew the chain to bits but could still drive it, do you have a part time kit? Pop off the access hole and have a look inside, it might have something to say!


also I have a 27 spline 205 with adapter and shifters for sale......


pm me if you are interested
 
Re: When a 203 goes bad.?.?.?.?. and I\'m pretty sure it gets worse

Well what did ya find out with it? /forums/images/graemlins/ears.gif
 
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