05VHO Posted October 24, 2007 Report Share Posted October 24, 2007 kind of like the vette on pt.net getting 15lbs on a 112. Quote Link to comment Share on other sites More sharing options...
Professiona1 m0d Posted October 24, 2007 Report Share Posted October 24, 2007 To answer your question, I am running an FLT 4L80-E level 4. I have a custom 2-piece driveshaft that is 6 inches thick, with a Mopar 3500 series center bearing. And yes, it is a little surprising to have seen 25% drivetrain loss, I wouldn't have believed it myself. Unfortunately, that is the amount that I see. Back to the topic, yeah, they must be spinning the living piss out of that blower to see that much boost! I don't expect it would be safe though? Quote Link to comment Share on other sites More sharing options...
bagged7104ss Posted October 24, 2007 Report Share Posted October 24, 2007 I have the 3.0 pulley on my truck and am seeing 10 pounds of boost. I only see 10 pounds of boost in the higher rpm's 5500+. I guess it will depend on the heads/cam. Quote Link to comment Share on other sites More sharing options...
Professiona1 m0d Posted October 24, 2007 Report Share Posted October 24, 2007 It really does, I wish I was able to see 10 lbs! Quote Link to comment Share on other sites More sharing options...
moregrip Posted October 26, 2007 Report Share Posted October 26, 2007 To answer your question, I am running an FLT 4L80-E level 4. I have a custom 2-piece driveshaft that is 6 inches thick, with a Mopar 3500 series center bearing. And yes, it is a little surprising to have seen 25% drivetrain loss, I wouldn't have believed it myself. Unfortunately, that is the amount that I see. Back to the topic, yeah, they must be spinning the living piss out of that blower to see that much boost! I don't expect it would be safe though? Your going to have to give me the 411 on your driveshaft setup, I have a stock HD two-piece, may need to upgrade Quote Link to comment Share on other sites More sharing options...
Professiona1 m0d Posted October 26, 2007 Report Share Posted October 26, 2007 Absolutely moregrip, mine was custom made by Suburban Driveline here in Illinois, they are actually very well known over here for their custom drivelines and for performance. I don't know how big they are out of state though. Anyway, what is the diameter of your stock size? Mine was about 3" or so, maybe even less, I forget. Unfortunately I don't believe it's an exact science, so the only way I knew I needed a new driveshaft was after I twisted mine. Quote Link to comment Share on other sites More sharing options...
moregrip Posted October 26, 2007 Report Share Posted October 26, 2007 Absolutely moregrip, mine was custom made by Suburban Driveline here in Illinois, they are actually very well known over here for their custom drivelines and for performance. I don't know how big they are out of state though. Anyway, what is the diameter of your stock size? Mine was about 3" or so, maybe even less, I forget. Unfortunately I don't believe it's an exact science, so the only way I knew I needed a new driveshaft was after I twisted mine. my stock driveshafts are 3.5" steel with 1410 joints I believe Quote Link to comment Share on other sites More sharing options...
Professiona1 m0d Posted October 27, 2007 Report Share Posted October 27, 2007 Hmm, that may work, but do you really want to risk it? I was lucky when mine twisted, because sometimes when they twist or worse, break, they can take out other driveline pieces. Like the tranny or diff. It wouldn't hurt to upgrade it all, other than your pocket book. My whole custom made setup only ran about a grand to give you a little insight. Let me know what you decide to do! Quote Link to comment Share on other sites More sharing options...
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