Questions on a project
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Eric Strongbear, Mar 5, 2020.
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Myself I’d take a c12 over a c13 it has less issues even better yet a 12.7 series 60..
AModelCat Thanks this. -
Off topic but geeze I was like a half hour away from St Malo last week.magoo68 Thanks this. -
I think I'm going to go with an Allison 4800 for this since it's rated for 680~800 horsepower and ~2,000 ft-lbs of torque. First gear looks really ####in steep but my next concern would be how I go about transfering power from the engine and to the rear wheels. I think I'm going to use a Quick Change center section for independent suspension setups but I'm unsure if I should go about getting a pair of flanges to directly couple the tranny output to the differential input or if I should go with a driveshaft, a short one at that. From there I think I'm going to go with Corvette style suspension and brake components since my original thought was to go with GM one ton wheel hubs and custom cv axles but seeing as how I can't find tires for 22.5" super single wheels with a low enough profile and a high enough speed rating to be practical
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At some point wheel will spin at whatever rotational speed it can get maxed out, now with a tall enough tire you can gain more distance with less rotation count per mile.
makes sense?
To some who talked cars and times, I am not that good on the 1/4 mile, I can do it but it's not my best. I am mostly a top end man. And as such take great pleasure in having engines capable of staying at red line or a little beyond for extended periods of time. Brand or type does not matter as long I get it all out and keep it there. -
OLDSKOOLERnWV Thanks this.
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650cat425 Thanks this.
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I am reading this and wonder what is the project? Is this going to be a Blastoline kinda thing?
Regarding transmissions, I was thinking about using an Allison behind a C13 in my Peterbilt. A friend that is an engineer at KW said it would be a daunting task. A lot of uncertainty in parts and support from Allison on older Cat engines and the new transmissions.. As far as manual transmissions, most heavy truck trans are non-syncro, Volvo has or had a 13 speed full syncro transmission in the early 90's, knew a guy with a truck that had one.
As far as driveline components, IF you are going to use a C13 that is set to 470-500HP 1650/1750 torque one ton stuff is not up to the task. Not stock one ton stuff at least. The torque will tear up the gears/splines. Corvette stuff is going to be far to light to withstand the forces you are suggesting. The forgings are designed to withstand an upset force well below what you propose. If you just want to smoke the tires maybe you can get away with some of this stuff, if it hooks it will break. While the HP may not be as impressive as a hoped up 5.9 the torque of a 13 liter engine is double that of the smaller engine. Yea some of the driveline stuff is designed to haul 80-120K loads but, going from a SPL170 u-joint to 1350 or 1410 is like using a 1/4" extension to torque main caps.
Can you elaborate on the design and configuration, you mention mid engine? Is this going to haul or tow anything?
Steve650cat425 Thanks this. -
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