[marcomccaine]

I have a 1979 4x4 truck with a 350 engine along with a used turbo 350 tranny that i just put in. Right now I am on the brink of frustration with all sorts of weird problems that i cannot seem to resolve. The problems consist of very slow, sluggish speeds to very bad clunking when shifting from park to reverse or to neutral or to drive. I just put a brand new modulator valve in the tranny, and made sure that there was no leaks coming from it or the vaccuum lines. The result is still the same. I adjusted the idle on the carburator as low as it will go and that causes the shift from park to reverse to have a 4 second pause then clunk as it engages. I changed the fluid as well, and found out that the fluid was not burnt or chared, but just as clean as if I had just put it in with some sludge on the bottom of the pan. Can anyone please give me some advise on how I can correct this problem.

-Steve

[astroracer]

That's the frustration of buying used junk... Especially transmissions... The fluid may be clean but, the previous owner probably went through the same process you are, hoping to magically "fix" a worn out trans... Now you have to pay again and do the work all over....
I'm not trying to flame you here bud. I just want you to realize you haven't saved yourself any time, money or hassle by buying a used trans. Step up the first time, get a warrantied rebuild, which probably isn't much more then the used hunk of junk you bought, and do it right the first time... Just a voice of experience.
Mark

[marcomccaine]

Thanks Mark. I appreciate your input. I went looking arond for a warrentytransmission and found one for $630 plus a $100 dollar core charge with a 15 month/15,000 warrenty.

Steve

[astroracer]

630 bucks huh? Around here a rebuilt th350, with a shift kit, is 300 even... No core either... I guess that's the price you pay for that "big city" livin...
Mark

[darom]

Shop around a little more. Or if you have a garage and some space, do the rebuild yourself.

Get a rebuild video from Technical Videos web site for ~$30, buy a $12 Haynes book on rebuilding TH350s, shop around for some tools to compress the springs etc. Total amount of money spent + experience = priceless. And moneywise it will be still less than $630 (at 19 yrs old that is a lot of money).

Oh and do some searches on this site for rebuild information: clearances, shift kit optimizations etc. A lot of people have done it. You can do it too.

Good luck,
Denis
'67 Camaro RS