Mack_Dog Posted March 26, 2021 Share Posted March 26, 2021 Hello fellow mack truck lovers, so my question is there any performance upgrades for the MP8? I know the dealer can up the power by 50HP but they will charge me 4-5.5k(technician info) which is STOOPID expensive for what ill be getting! I know i could also go thru the body builder and have them make out a 800hp but i wanna save that as last resort. Bully, as far as i know the only one, makes a turbo manifold too. This will be a slow-ish process and i know my transmission will be limiting me as well. Any advice? Thanks in advance 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/ Share on other sites More sharing options...
Joey Mack Posted March 26, 2021 Share Posted March 26, 2021 (edited) I'm going to watch this thread, because I'm curious. So 505HP and around 2000LbFt of torque is not enough?? what type of trucking are you doing? I'm Truly Just curious... Jojo..... Hey "V" how much torque does the MP-8/D-13 have? Edited March 26, 2021 by Joey Mack More content needed 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471504 Share on other sites More sharing options...
Fastduramax Posted March 26, 2021 Share Posted March 26, 2021 JOJO !!! Kmon my friend is any amount of HP ever really "enough" !!! Kinda like "to much HP" That phrase is totally off the charts ! Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471505 Share on other sites More sharing options...
Joey Mack Posted March 26, 2021 Share Posted March 26, 2021 I get it!!!! Knew that going in.... Just curious if he needs to drag big magnets behind him so he can collect the shrapnel... 🤔😁 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471509 Share on other sites More sharing options...
Vmac3 Posted March 27, 2021 Share Posted March 27, 2021 3 hours ago, Joey Mack said: I'm going to watch this thread, because I'm curious. So 505HP and around 2000LbFt of torque is not enough?? what type of trucking are you doing? I'm Truly Just curious... Jojo..... Hey "V" how much torque does the MP-8/D-13 have? You would be correct. I believe it's 1850. Nevertheless I agree with what you are saying. The engine block and rotating assembly won't withstand the torque twist for long. V Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471520 Share on other sites More sharing options...
Joey Mack Posted March 27, 2021 Share Posted March 27, 2021 Heck i figured a U-Joint, or a rear end, or axle.. I have rebuilt a few Eaton 404's 3 years ago, mostly power dividers, and some that I couldn't save. MP's up front. Hell I don't know..... Jojo Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471524 Share on other sites More sharing options...
Bullheaded Posted March 27, 2021 Share Posted March 27, 2021 Don't know what can be done with an MP but I personally know 6 ISX Cummins that were deleted by the biggest advertising delete company you see and they had the 750 h.p. programs. They pulled pretty good.....for a very short time. Then they ALL blew up. LOL 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471527 Share on other sites More sharing options...
Mack_Dog Posted March 27, 2021 Author Share Posted March 27, 2021 no i wont be in any drag competitions haha its mostly a "i want big power i need big power" kinda thing. Although from my business accounting point of view, less time spent going up those west coast grades = more time being spent on more productive things lol. I just want a little more power for the time being, for fun, and then when i retire the truck i want to go full 800HP just becuase itll be cool! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471531 Share on other sites More sharing options...
Joey Mack Posted March 27, 2021 Share Posted March 27, 2021 ✌️ Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471534 Share on other sites More sharing options...
Mackpro Posted March 27, 2021 Share Posted March 27, 2021 (edited) Factory/dealership HP upgrades for MP8 should be fairly cheap. If you have a Mack transmission and truck is out of warranty. The dealer cost to go to 505 is usually around $200 , the dealership will usually mark that up 30% or $100 and charge 1 hour labor to install it . If the truck is still under warranty the the cost of the download is the difference between the cost of the factory engine versus cost of a 505 HP engine at time of purchase. Usually $1200-1400 plus markup and labor to install . On some year models there is the 505 Plus download that has an extra 100 ft pounds of torque that you can get . You can’t get the 505 if you have a Fuller trans with a low torque rating or if you have a Allison transmission in a GU . They do have a 505 E download that’s for trucks with smaller Fuller trans where you get the 505HP but not the bigger torque. If a dealer is gonna charge $4-5000 for a factory upgrade, you need to find a new dealership. Edited March 27, 2021 by Mackpro Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471537 Share on other sites More sharing options...
Mack_Dog Posted March 28, 2021 Author Share Posted March 28, 2021 I have the 505, they said itll bump me up to 550 with the tune, but id like a bit more power and torque just for the fun of it since im more into power and tuning than i am into shiny parts. And of course, paying 4-5k for a 45HP increase is straight up robbery! Sometimes i wish i went with a cummins or cat since theyre more modifiable but i love my mack haha. I read on here some guy was pushing crazy amounts of HP with the MP8 doing some type of races but i dont remember if hes still active here 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471611 Share on other sites More sharing options...
Hayseed Posted March 28, 2021 Share Posted March 28, 2021 Here in Australia the We get a MP8 with 535Hp & 1920ft/lb of Torque.. https://www.macktrucks.com.au/powertrain-and-suspensions/engines/mp8/ Whereas I see, you guys only get 505/1860... Quote "Be who you are and say what you feel...Because those that matter...don't mind...And those that mind....don't matter." - Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471616 Share on other sites More sharing options...
880joe Posted March 28, 2021 Share Posted March 28, 2021 That is probably Staxx that you are thinking of I have not saw him on here in a while. Also I belive he was only running an mp7 could be wrong on that though 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471621 Share on other sites More sharing options...
Mack_Dog Posted March 29, 2021 Author Share Posted March 29, 2021 Yeah they even discontinued the mp10 here. Whereas you guys even have the superliner pushing almost 700HP! Probably, i tried looking up the article but i couldnt even find that. It was a black 2 axle truck, single turbo. And the convo was about making Mack trucks have a compound turbo set up for more power or something like that. Guess ill just have to give Mack body builder a ring to see what they can do without bending me over since i can just tell the price will not be good haha Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-471669 Share on other sites More sharing options...
Popular Post staxx Posted April 14, 2021 Popular Post Share Posted April 14, 2021 MP7 , 1000hp single VGT turbo mack 5 speed trans 👍🏁🇺🇸 4 Quote Link to comment https://www.bigmacktrucks.com/topic/66384-mp8-performance-parts/#findComment-472492 Share on other sites More sharing options...
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