My time for Circle D, Give me some insight.
#13
I knew the 245 would be lighter so I just left that tidbit out, cause I figured he knew that & isn't lookin for a track monster. That said, the smaller of the 2 generates more heat, right? And while I believe it does, why does it? Is it cause there's less fluid inside it cause it's a smaller package?
Last edited by fastnblu; 04-13-2010 at 06:55 PM.
#14
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im on a bone stock trans as well.... no shift kit or servos... bone stock.. my cooler is still in the package sitting in my garage... im nowhere near 400hp, but so far, mines holding up.i know its a ticking time bomb, but it doesnt act up, or slip. i just rolled over 138k a couple weeks ago.... ive had my eye on a 245mm 3c since the week after i put my current 278mm converter in
#15
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im on a bone stock trans as well.... no shift kit or servos... bone stock.. my cooler is still in the package sitting in my garage... im nowhere near 400hp, but so far, mines holding up.i know its a ticking time bomb, but it doesnt act up, or slip. i just rolled over 138k a couple weeks ago.... ive had my eye on a 245mm 3c since the week after i put my current 278mm converter in
#16
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The 245mm doesn't necessarily generate more heat based on size alone, its because they are normally a higher stall speed. The larger diameter converters are "as a rule" moe effiecent (both heat and power wise) because the fins are larger and have more surface area than a smaller diameter converter. If you have a 3200 245mm, and a 3200 258mm they will act very differently and transfer power to the wheels and make heat very differently.
As far as longevity goes, the 258mm or larger will last longer in a single disk configuration purely because of clutch surface area. Bigger cover = bigger clutch = more holding capacity = less slip = longer clutch life. Same basic theory applies to a multi disk setup as well but because of power handling capacity associated with the lockup side of a multi disk converter, its never really too much of an issue (that I've ever seen)
Anyway... Only Chris could really tell you why and how but there's my somewhat halfass educated guess
As far as longevity goes, the 258mm or larger will last longer in a single disk configuration purely because of clutch surface area. Bigger cover = bigger clutch = more holding capacity = less slip = longer clutch life. Same basic theory applies to a multi disk setup as well but because of power handling capacity associated with the lockup side of a multi disk converter, its never really too much of an issue (that I've ever seen)
Anyway... Only Chris could really tell you why and how but there's my somewhat halfass educated guess
#17
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I like the 258 for the better street manners, and it will run cooler also, although the big trucool seems to handle everyone's trans temp concerns.
Not sure if this makes a difference or not, but since a higher stalled converter soften up the shifts a bit...I wonder if the size of the converter have any effect? Like a smaller converter with the same stall rating as a bigger one softens it up more?
Not sure if this makes a difference or not, but since a higher stalled converter soften up the shifts a bit...I wonder if the size of the converter have any effect? Like a smaller converter with the same stall rating as a bigger one softens it up more?
#20
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Just spoke with Chris, For my goals and how I drive the truck the 3B 258mm will be a nice match for me. He said it should be around a 3500-3600 with my set up.
Thanks for your help guys and thank you Chris for helping make the final decision. I will keep everyone updated of course
Thanks for your help guys and thank you Chris for helping make the final decision. I will keep everyone updated of course