nitrobandit
SDD Junior Member
been trying to find any info on this. does anybody know what the stall torque ratio is on a 2003 e350 ford van with 7.3l turbo diesel? i cant seem to find this anywhere in print. thanks
stall torque ratio
- Thread starter nitrobandit
- Start date
DaveBen
SDD Senior Member
The only information on stall converters is the stall speed. I have never heard of any ratio connected with the stall converter. If'n I am wrong, someone will bust me. 
Dave
Dave
nitrobandit
SDD Junior Member
stall
yes, ive been doing some checking and with transmissions like my at545 allison, you can buy 3 converters for it, one with gas which has a a3hd converter code 270,275 which is a 1.96 stall torque ratio, a code 290 which is a 1.72 stall torque ratio for diesel, and a code 275 which is a 1.96 stall torque ratio. the numbers 270,275, and 290 all refer to a generic conveter code to make it easy to buy from different manufacturers,now the stall torque ratio is another number i havent decifered. im trying to put a 2003 e350 7.3l diesel engine in front of a allison at545 trans and trying to match the original 4r100 trans converter to what i have a choice in buying for the allison. its obviously something to do with torque multiplication of the converter, but im still not certain of exactly how it relates to stall speed as the trans is rated for gas and diesel, but different input speed range for both. any ideas? ive looked through all of mitchell on demand for it, and couldnt find any info either.
yes, ive been doing some checking and with transmissions like my at545 allison, you can buy 3 converters for it, one with gas which has a a3hd converter code 270,275 which is a 1.96 stall torque ratio, a code 290 which is a 1.72 stall torque ratio for diesel, and a code 275 which is a 1.96 stall torque ratio. the numbers 270,275, and 290 all refer to a generic conveter code to make it easy to buy from different manufacturers,now the stall torque ratio is another number i havent decifered. im trying to put a 2003 e350 7.3l diesel engine in front of a allison at545 trans and trying to match the original 4r100 trans converter to what i have a choice in buying for the allison. its obviously something to do with torque multiplication of the converter, but im still not certain of exactly how it relates to stall speed as the trans is rated for gas and diesel, but different input speed range for both. any ideas? ive looked through all of mitchell on demand for it, and couldnt find any info either.
DaveBen
SDD Senior Member
Busted, again... Learned something.
Dave
Dave
well there's your problem right there...
we use it at work, too.. and it blows...
maybe try a transmission shop?
nitrobandit
SDD Junior Member
trans
hey, dont feel bad. ive been a pro mechanic at 5 different brand dealers and ase master tech for 15 and had never heard the term. since my post ive located the info about what it is, but am still lacking the tech infor on the ford. probably deep inside a factory tech manual, but who knows. apparently its the multiplication factor of the engine in torque multiplied by the number to what the front of the trans sees in torque. 200 fts lbs engine x 2.0 = 400 ft lbs at input shaft. the odd part is the gas engines have more multiplication than the diesel engines, which i would think is backward thinking, since the beauty of the diesel is low rpm torque, but has something to do with optimum stall speed too. any ford mechanics out there with access to this info? help!!!!!!!!!!!
hey, dont feel bad. ive been a pro mechanic at 5 different brand dealers and ase master tech for 15 and had never heard the term. since my post ive located the info about what it is, but am still lacking the tech infor on the ford. probably deep inside a factory tech manual, but who knows. apparently its the multiplication factor of the engine in torque multiplied by the number to what the front of the trans sees in torque. 200 fts lbs engine x 2.0 = 400 ft lbs at input shaft. the odd part is the gas engines have more multiplication than the diesel engines, which i would think is backward thinking, since the beauty of the diesel is low rpm torque, but has something to do with optimum stall speed too. any ford mechanics out there with access to this info? help!!!!!!!!!!!
