ok guys pulled starter today an inpection plate soon as i open inspection plate bam a lose bolt on the flexplate out bout 1/4 to 1/8 of inch im going to inspect all bolts soon as i get drop light from store in bout 30 mins...now my next issue is i do not have cats could this being causing my lose of power since i have no 02 sensor an i ran codes an o2 sensor is one of them if so what do i need to do to get o2 sensor put in, cut hole weld bung an just screw in if so how much you think this will cost i am a very good welder but do not have equipment on hand....

 

alright guys as i was inspecting flexplate noticed one bolt was good two were loose and one was not even there looked around an its not in the bell housing and upon further inpection noticed that the hole were the missing bolt is fossed to go in dosent even line up to a hole at all.. an one of the lose bolts is half a hole off i beaging to think who ever rebuilt the tranny put the wrong flexplate on complety cause only two hole line up perfectly im i missing something here or dose this sound like my problem.....plzz help

 

Need a bung welded into exhaust pipe for O2.

Did we discuss plenum?

I believe there are 4 bolts to TC. If one is a hals a hole off, loosen the others and see if you can get alignment. Hope no one drilled out to enlarge holes! Holes are spaced 90 degrees apart. They should all line up. So after loosening, get all in, then tighten.

 

If you have the 360, the bolts are NOT evenly spaced. TC will only line up all the holes one way.....

 

yes its the 360,,an its the bolts on the flexplate backing that were loose but 2 are not lining up thinking that ppl that rebuild tranny didnt line it up correctly....what do you mean tc will only line up holes one way..

 

The 360 is externally balanced, on the earlier years, the Torque converter provided that balance, by having weights welded on to it. The holes are NOT evenly spaced, so the TC will only bolt to the plate ONE way. That ensures that the engine is properly balanced. Since they AREN'T lined up...... god only knows what damage has been done due to vibrations..... You are going to have to do trial and error on getting it lined up. Put in ONE bolt, turn the engine and see if all the others line up, if they don't, take the bolt out, rotate the torque converter so the next hole lines up, put the bolt back in, and turn it again to see if things line up. Yeah, it's a LOT of exercise.

 

seems like lot of work seein im turning flexplate by hand couple skint knuckles today lol...an slso there where no metal shaving inside housing i guess thats ok news..what would cause the backing not to line up???

 

All four holes will only line up one way. They are not evenly spaced. Makes sure the tc is in the right position for engine balance.

There is a neat tool for turning flywheels.... if it has the ring gear for the starter on it, might be able to rent one. Either than, or use a long flat blade screwdriver in the teeth to turn it.

 

No shavings is a good sign. May have to loosen tranny bolts to get some clearanc eto rotate plate. And skinned knuckles is pretty much unavoidable doing that.....sorry!

 

im doing all this from under the truck an ive been useing a flat head i also removed 2 spark plug to realse compression a little but still pretty tough...also i cant get to tc seeing its behind flexplate are u figuring im haveing another problems besides my bolts being lose an not lining up