need help on pete dump truck-c-15 or 3406e

Hello all, yes this is my first post, but many hours of observationI have an small excavation bussiness & have always hired out the dump trucking, but find I need the evil necessary now. I have aquired a prodject- 97 pete 378, that came w/ '05 acert on crate. orignal eng.was 3406e 410 hp w/ allison hd4560 6spd trans---so this is my last email to local cat engine tech/rep. DDS this might be up your alley! thanxs to all in advance!!
Tom, I still have not made decision on wether to use the c-15 acert Serial # mxs 62100 in my dump truck project. I have spent countless hours researching truck forums, and this is what i have learned so far! - the acerts need to run # lower rpm's (1400 hwy, down to 1100 on hills) than previos 3406e's in order to mantain acceptable fuel milege & engine wear. I understand some ser. # c-15 acerts had warranty issues w/ rocker arms/shaft breaking, turbo mtg bolts, Injector accuators, & few other minor problems. Most forums state that these engines are covered up to 800k. is this the case w/ my engine? has this engine had any updates/warranty work already done? I believe engine has low miles/hrs as it was wrecked somtime in 2007
Last issue- my dump has 5.29:1 drivers w/ 24.5 tires. If i install an 18 spd. trans. will engine rpm # 55-60 mph be unexceptable for this engine combo?
thanks again for your help, please advise at your convenince

 

Ps- 3406e caught fire but trans. untouched & just gone thru before fire. I would love to find another 6ts to replace & keep allison (then my daughter could help!!) but allison is only good for 1450 ftlbs. the c-15 is 1650 # 475 hp. my delima is the c-15 has only 40k miles. just looking for input.. thanks

 

thanks to both of you for your replies
Longhood379 & Black dog106
so should I can the acert, go find another 3406e & 18 spd dbl over (or find a 3406e w/ torque specs that work w/ allison) or change pumpkins? ---if this was your senerio! obviously cost is a factor