Torque converters

[ISPKI]

Hey all, I have a 1994 super duty, 7.3 N/A with an E4OD. Local guy is selling a bunch of torque converters that he found in storage, DACCO brand, all NIB for reallllllly cheap. One of them is part# F59HS which says it is for an E4OD but I wanted to check and see if our trucks had a different TC in them than other vehicles since the E4OD was put in alot of different cars and trucks. He also has an HD3686HS which seems to go in a 5.4L expedition but im not sure if that would fit our E4OD or if that would go with a 4R100.

 

[ISPKI]

Cross referencing the numbers off rockauto shows the TC sizes and spline counts to be identical for the F59HS. Rockauto lists part# F59DO (close but not exact) and lists "Low Stall". other sites list the F59HS as having 2000RPM stall.

HD3686HS is listed as a "High Stall" TC but seems otherwise identical to the F59HS. I guess thats what the "HS" implies in the part#s, but then, what does the "DO" suggest for the super duty variant?

 

[CharlesG]

Diesel Only?

 

[ISPKI]

Diesel Only?

I think the F59HS is for our E4ODs except that it is the high stall version for the big gas motors, whereas the ones specc'd for the 7.3 is a low stall, although from what I have also read is that the Ideal stall for our TCs is around 1800 and the ones im looking at are 2000, so maybe thats good nuff?

Would a higher stall be better for a turbo charged IDI? I have a sidewinder that will be going in at some point so maybe I should pick one of these TCs up.

 

[CharlesG]

John Wood installed a low stall convertor in my 4R100 when he rebuilt it. The lower stall speed helps take advantage of the lower RPM torque of a diesel.

 

[CDX825]

My local trans guy doesn't like Dacco torque converters if I remember right. Seem to recall him saying dacco boom. I had the one go out in my 98 ranger and I seem to think it was a Dacco and he said I was lucky it lasted as long as it did.

 

[ISPKI]

My local trans guy doesn't like Dacco torque converters if I remember right. Seem to recall him saying dacco boom. I had the one go out in my 98 ranger and I seem to think it was a Dacco and he said I was lucky it lasted as long as it did.

Thats interesting because they are made in Iowa. I would expect them to be of good quality.

 

[Laine D]

The converter on my buddy’s 24 valve was a dacco. It slipped real bad. When we took everything in to get it built the guy at the shop just started laughing.

 

[ISPKI]

Yeah ive been reading some reviews, seems that they used to be of good quality but are now (as in within the last 5-10 yrs) hit or miss. Some last forever, others fail within 100 miles. Well this is a NOS that I got for 20$. Guess i'll keep it on the shelf as a just in case part.

 

[DuRolf]

I would vote for a low speed stall converter. AAMCO replaced my C6 in 2012 with a 2100 RPM stall speed TC, and my vehicle struggled for years going up grades. I finally figured out to put in a 1500 RPM TC from Hughes, and it was night and day. Grades that used to be a challenge, with engine and trans temps hovering at too high and EGTs pegged at 1100F, now were easy. My vehicle just chugged up them without a care, all gauges well within safe ranges.

 

[raydav]

Yes on low stall. And, if you are serious about your truck, triple disk, billet.