My dad has an old mack truch sittin in the woods and i'm thinkin of takin the turbo for a twins setup i havent taken it off yet but i got the numbers off the schwitzer tag and i was hoping someone could tell me what it is and the specs.

Model:s3b-085

P/N:631gc5134p5x

S/N:L1699008r9

I know nothinng about it so any input is appreciated. thanks guys.

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Come on i know someone on here has to know something about this turbo...

 

only thing I could find on anything was part numbers and replacement prices, i think your best bet would be to measure the exhaust wheel and compressor wheel and exhaust housing

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found a few specs not much though, lookin at probably a 61/72 or a 61/80 not sure on the exhaust housing, probably in the 20's though, so it's probably around a 61/72/20 which wouldn't be any bigger than most upgraded turbos, it'll spool slower though, and like i said i don't know, but maybe this can help

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nevermind with a little more digging i believe you're looking at an 83mm turbine with a 91mm compressor, still not 100% sure, that is something i believe you should look into, there's not alot of info out there

 

Thanks for the help bobcat. and your right there isnt a whole lotta info out there but from what i found its an 81 turbine and 91 compressor like you said. I'll definitely just measure it up.

on another note if this did turn out to be a 83/91/??? what size exhaust housing would be best for a twins setup with my hx35? any help is appreciated.

 

I think you'd want to go with a 5" setup of some sort and even if it is an 81/91 that would be a good turbo for the atmospheric charger