Hoping for a little insight on how screwed I am on my current project. Bought a 1984 K5 blazer with a beat 305 and 700r4 trans. I found a mildy built 350 to swap it out. I ended up getting a B&M Torque converter to help adjust to the bit more of hp. After trying to put the truck into gear noticed it would not no matter what I did. I did not notice any weird clunks or anything at all. I’ve never replaced a torque converter before but the information I got said that this one would work for my setup to later finding out I put a 30 spline converter on my 27 spline input shaft after checking my old stock converter. I just verified I still have pump pressure on trans after shooting fluid half way across my garage. How much damage should I expect on the input shaft of the transmission? Should I expect to have to replace the transmission? Bumming because I’ve been pushing to get this truck done. Appreciate any insight since I’m a newbie to these and still learning.
Are the pictures after you took it apart? If so, do you see any damage? I don't...but it's not a very clear picture, taken too far away to see much.
Sorry yeah the picture of the shaft is before I put the new converter on. The weird thing was I heard the three clicks that I thought you’re supposed to hear while installing them so I thought everything was OK
Yup, you have to also know about the 30 spline upgrade they did in the mid 80s, and what year transmission you have. Take it apart and inspect things. I don't know if the 27 spline shaft is a free fit in the 30 spline converter, or not. Been a long time since I played with a 700r4.
84 is a fun year. Same issue happened, trans rebuilt, TC went on too easy, pump pressure but no movement. 30 spline TC on 27 spline trans. Replaced 30 spline TC with 27 spline TC, no problems. Outside of being a 700 that is *shiver*.
I have a converter issue on my 52. One of the converter bolts must of stripped out so trying to see if I can get away with chasing the threads while it’s in the truck.
@dart4forte 3 or 5 , 6 bolt converter ? If 3 bolt Hmm !! Would be tight space to work in with out dropping trans off Dowel pins. I would think Nuts /block welded to converter. Commercial /Industrial self tapping bolt , Few turns @ time in & out cleaning flutes & threads . SAE or MM one size bigger then original , It Will not throw out of balance .. Or Maybe short /modified bottom tap one size up , if SAE to MM . Or if MM to one size up to SAE , You would all so need Like Modified short drill bit , flat dog bone Extension that has like a worm gear so you could spine fast enough with drill or ratchet . Work & tools just would be easier & less $ to RR trans of Dowel pins .. IF 5 -6 bolt converter just leave that one out or Lock tight it in that One bolt
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