Multi Disc Converter Questions
09-12-2011, 09:03 PM
#1
Multi Disc Converter Questions
Allllrighty
Well Im fixing to have a tranny built and im going to get another converter from Circle-D but im unsure on going multi disc or not..
Spec's on the truck-
crew cab 4x4-5600#'s
5.7 ls1 that will end up with about 375+rwhp n/a and close to 500+rwhp on the bottle,4.30 gears,31.5"-32.5" tire...
Now the fun part..Ill be pulling roughly 6000#'s with this truck as much as 8,000 miles a year..The rest of the time it will daily driven to work..
Soooo questions are-
Early lockup-
How soon can i lock a multi disc while towing (gear/mph)??
Max stall speed-
What would be the absolute max stall speed i could go with with said weight??Would like to be at 3k or as close as possible.(currently have a 278mm circle d and it flashes to 2600,but not sure about towing with it yet)
Longevity-
I def dont want to be changing converters every 25k miles so how will a multi disc hold up vs a single???
Which one will be nicer on the tranny??
Now i know this thing is gonna cost several shiny pennies but i want everything to work together..
Well Im fixing to have a tranny built and im going to get another converter from Circle-D but im unsure on going multi disc or not..
Spec's on the truck-
crew cab 4x4-5600#'s
5.7 ls1 that will end up with about 375+rwhp n/a and close to 500+rwhp on the bottle,4.30 gears,31.5"-32.5" tire...
Now the fun part..Ill be pulling roughly 6000#'s with this truck as much as 8,000 miles a year..The rest of the time it will daily driven to work..
Soooo questions are-
Early lockup-
How soon can i lock a multi disc while towing (gear/mph)??
Max stall speed-
What would be the absolute max stall speed i could go with with said weight??Would like to be at 3k or as close as possible.(currently have a 278mm circle d and it flashes to 2600,but not sure about towing with it yet)
Longevity-
I def dont want to be changing converters every 25k miles so how will a multi disc hold up vs a single???
Which one will be nicer on the tranny??
Now i know this thing is gonna cost several shiny pennies but i want everything to work together..
09-12-2011, 10:35 PM
#2
TECH Enthusiast
if you are planing on towing that kind of weight i would say a 258mm triple disc . 28-3000 stall with that conveter u can lock it up at full throttle with no wories just keep it cool the converter will get loose once u get that towing weight behind it . atleast mine does
09-12-2011, 11:05 PM
#3
I didn't change a thing about the lockup speed with my CDS multi, no problems. I wouldn't go too loose with the stall for a towing application, otherwise you'll need to keep it locked up to prevent transmission overheating. Theres a whole debate about converter efficiency here which REALLY applies when towing, but I'm not even going to start that lol.
I'm gonna have to disagree with that, I had that same converter (CDS 2B, 28-3000 258mm) and it was extremely sloppy as a daily driver, with no trailer. Trans temps got much higher than I was comfortable with, 180-190 range. For towing, stick to the larger diameter converter. The 2400 258mm I'm running now feels a lot better, but I wouldn't rely on it as a towing converter without my laptop sitting next to me to keep it locked up when I need it.
if you are planing on towing that kind of weight i would say a 258mm triple disc . 28-3000 stall with that conveter u can lock it up at full throttle with no wories just keep it cool the converter will get loose once u get that towing weight behind it . atleast mine does
09-13-2011, 07:04 PM
#7
Planning on the 60e for rite now..
Im worried about being in traffic and flashing it when i start moving
The cam will be 224 duration or less for the new motor (6.0)..
The earliest i can lock is in 2nd gear @ whatever speed.. I plan on doing ALOT of trans tuning with the trailer hooked up to get everything worked out..
The single disc i have now i had Chris leave at 2400-2600 and it does flash rite at 2600..Im going to be hooking up to the trailer next week so ill forsure get some logs of how it react's
Im worried about being in traffic and flashing it when i start moving
The cam will be 224 duration or less for the new motor (6.0)..
The earliest i can lock is in 2nd gear @ whatever speed.. I plan on doing ALOT of trans tuning with the trailer hooked up to get everything worked out..
The single disc i have now i had Chris leave at 2400-2600 and it does flash rite at 2600..Im going to be hooking up to the trailer next week so ill forsure get some logs of how it react's
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09-13-2011, 11:04 PM
#8
From what I've noticed, it's easier to smoke the 3-4 clutch pack with the converter locked, than unlocked, on the 60E. I don't know why that seems to be, and I don't claim to be an expert on the subject. But I've broken them in several different methods.
IMHO, locking the converter with weight behind the truck, and power in front of the transmission(meaning climbing hills, accelerating part-mid throttle) is a bad idea. I'd only lock the converter for steady-speed cruising on the highway.
If you had the 80E, I'd recommend otherwise. Maybe one of our resident trans experts will chime in with a helpful post.
IMHO, locking the converter with weight behind the truck, and power in front of the transmission(meaning climbing hills, accelerating part-mid throttle) is a bad idea. I'd only lock the converter for steady-speed cruising on the highway.
If you had the 80E, I'd recommend otherwise. Maybe one of our resident trans experts will chime in with a helpful post.
09-14-2011, 10:20 AM
#9
You definitely need to keep it at MAX 3000. I'm running a 2600 and backing up a heavy trailer on any type of hill even with the trucool 40k it gets hot quick! Same with manuevers around parking lots. Which is also why I recommended going with a blower instead of a bigger cam. With the larger cam you have to remember when locked going down the highway you're going to be around 2k and with a windsail behind you you're going to be missing that down low tq needed to keep moving. With me moving, I've been yanking around my 20' enclosed trailer with GCVWs of 10-15k depending on what I had loaded in the trailer. I think you're going to be disappointed with a 224 cam when towing with that setup unless you're fine with towing in 3rd.
09-15-2011, 11:54 AM
#10
You definitely need to keep it at MAX 3000. I'm running a 2600 and backing up a heavy trailer on any type of hill even with the trucool 40k it gets hot quick! Same with manuevers around parking lots. Which is also why I recommended going with a blower instead of a bigger cam. With the larger cam you have to remember when locked going down the highway you're going to be around 2k and with a windsail behind you you're going to be missing that down low tq needed to keep moving. With me moving, I've been yanking around my 20' enclosed trailer with GCVWs of 10-15k depending on what I had loaded in the trailer. I think you're going to be disappointed with a 224 cam when towing with that setup unless you're fine with towing in 3rd.