help identifying converter
help identifying converter I bought this th400 converter off a member here, thought it was a tci 5500 8" race converter, but after receiving it, I do not believe it is close to what was described. Here is a few pics, only markings on the converter are "mpm" etched in the front of it, and has "gm" faintly in blue on the side. It was supposed to be an 8" converter, but measures 11" across, to me looks like a stock style cut apart converter. I just ran an 8" coan converter in my firebird last year, which measured 8", but this seller is trying to say this is an 8" converter even though it measures 11" from side to side. Opinions?
It even has a small drain plug on the back.
Sorry for the bad pic, only got my camera phone, it's 11" across though...
It even has a small drain plug on the back.
Sorry for the bad pic, only got my camera phone, it's 11" across though...
I can only say if it measures 11 inches its not and 8 inch converter. 
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Any chance we can identify this any more? Does the "mpm" stamped come on a stock converter maybe? You think this could be a stock converter thats been cut open and modified?
i didn't think stock converters were painted at all but i could be wrong on that. and tci's are black i think too, but that doesn't mean somebody couldn't have just sprayed a stocker black.
Teching In
Joined: Oct 2002
Posts: 16
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From: TEXAS
Looks like your measurement is adding an inch and a half or so... So it prob actually measures 9.5-10 I just went out and measured one of my 8" race converters and it measures 9.5" I also have a 7" converter that doesn't measure 7"... Dont take the "inch" so literally on the converters..... Different companies will have different specs..... You have an aftermarket converter, just not sure exactly what the brand is. Have you ran it yet and seen how much it will stall? Why did you get rid of the Coan, I thought they were good converters???
Here is a stock converter for you....
Here is a stock converter for you....
I can only tell you this, Its not stock, But at 11 inches its not and 8 inch so I have no idea.
But it does appear in the pic your adding and inch it starts at the metal tab.
But it does appear in the pic your adding and inch it starts at the metal tab.
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Looks like your measurement is adding an inch and a half or so... So it prob actually measures 9.5-10 I just went out and measured one of my 8" race converters and it measures 9.5" I also have a 7" converter that doesn't measure 7"... Dont take the "inch" so literally on the converters..... Different companies will have different specs..... You have an aftermarket converter, just not sure exactly what the brand is. Have you ran it yet and seen how much it will stall? Why did you get rid of the Coan, I thought they were good converters???
Here is a stock converter for you....
Here is a stock converter for you....
I'll measure it tomorrow with a better pic, I was expecting a small light 8" converter only to open the box and get this big heavy converter. I just got it today so I haven't got to try it out obviously. I'll try to see if I have a pic of my 8" coan converter I had.
I'll flip it over and get a better pic tomorrow, I just took these quick pics earlier today, didn't have a lot of time.
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Let me help. that converter is a 10" F-30 core convertered to fit a GM.Those cores are still used by some manfacturers but not many.Mosty have gone to the 245 because of durability and fin angle options.It coukld be a TCi but TCI stamps there converters as we do with TCI right on the impeller side of the converter. what are your plans for this converter?.Race car only ? if so you might want to think about it.Not necesarily a bad converter but you need to make sure it is right for your combination.
Greg
Greg
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FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
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FTI Converter build sheet
FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
info@ftiperformance.com
FTIPerformance.com
FTI Converter build sheet
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Verdad Gallardo Thanks Greg, you answered my question exactly as I needed, and backing performabuilt, I believe I wasn't sold what I thought I was being sold. I'm going to contact the seller and go from here.
I was planning on running this converter in my rx7 just for this year, all motor, then switching to a nice converter this winter when I build a big nitrous setup. The car will get driven on the streets, but I was looking to really push it n/a this year, trying to go into the 10's on a cam only lt1. You were definitely on my list to call about a converter, I'm really wanting to see how your 4000 works in my friends trans am wants he hit the track here soon. I will have a different combination come spring that will take a good converter that is for sure.
I was planning on running this converter in my rx7 just for this year, all motor, then switching to a nice converter this winter when I build a big nitrous setup. The car will get driven on the streets, but I was looking to really push it n/a this year, trying to go into the 10's on a cam only lt1. You were definitely on my list to call about a converter, I'm really wanting to see how your 4000 works in my friends trans am wants he hit the track here soon. I will have a different combination come spring that will take a good converter that is for sure.
I would definitely contact the seller. Maybe it was an honest mistake and he was given the wrong info. Greg is correct, it is a 10" Ford core originally. The pump looks like it is off a high stall A4LD, a Ford Explorer with a 3.0 motor. It does not look very well built from the outside, so the inside is probably about the same. Durability and efficiency were probably sacrificed for quantity.
On a side note, Converter diameter seems to be what ever you can round down to, and sometimes more. For instance, the 8" converter is a very popular choice for high performance race motors, but it actually measures over 9". It really bothers my OCD. Just wanted to throw that out there.
Chris
On a side note, Converter diameter seems to be what ever you can round down to, and sometimes more. For instance, the 8" converter is a very popular choice for high performance race motors, but it actually measures over 9". It really bothers my OCD. Just wanted to throw that out there.
Chris
