Race trucks have high maintainance cost associated with keeping them running. High performance street trucks have most likely even higher costs as they get driven more and beat on often. The truth is that the transmissins all need to get freshened up ever few years. My built 46rh is still going strong but it will eventually need a overhual as will any transmission.
545RFE Trans. Mods
2
Hey Josh, are you running a stock torque converter. That could explain the hard down shifts. Or, do you have the Torque Management option tuned off? With my tune from Marty. My Torque management is turned off. Some times, it will get a harder than normal down shift when slowing down. I bet that is a much harder down shift in a stage III.
"The Sharadon stage III trans was set-up to run a 2800 to 3500 rpm stall TC. Denny said the trans works best with 3000 rpm stall TC on a 2WD." Note: The Sharadon stage III trans is set-up more for the track than the street.
The shudder, hesitate, and bump bump bump?
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I would call and talk to Denny about those problems. He won't be in town until 9/14. I have to call him back on that date to find out what my options are for a 03 trans build.
Bill, are you having this same hard down shift at 30 mph? I'm guessing your Torque Management is turned off also?
"The Sharadon stage III trans was set-up to run a 2800 to 3500 rpm stall TC. Denny said the trans works best with 3000 rpm stall TC on a 2WD." Note: The Sharadon stage III trans is set-up more for the track than the street.
The shudder, hesitate, and bump bump bump?
Bill, are you having this same hard down shift at 30 mph? I'm guessing your Torque Management is turned off also?
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Check this out.
One of the things that goes bad is the valve body gets worn out of spec at the accumulator bores. The accumulator piston rubs against the accumulator bore and wears it out of spec. Here's the fix for that problem. :thumb::thumb:
Sonnax Accumulator Piston Kit - 44894-01MK
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One of the things that goes bad is the valve body gets worn out of spec at the accumulator bores. The accumulator piston rubs against the accumulator bore and wears it out of spec. Here's the fix for that problem. :thumb::thumb:
Sonnax Accumulator Piston Kit - 44894-01MK
It was time to do a filter & fluid change on the 03. Very pleased with what I have found. The filters and fluid haven't been changed since Dec 2017, before the truck started doing it's fastest runs yet at full weight. The trans fluild looked so good, didn't even change it out. Just topped it off with new trans fluid.
This is the modded Sharadon trans with the Smart Tech OD hub and the increased line pressure spring in the trans fluid pump. This is the same trans that did a 12.7/12.8 @ 105 to109mph at PBIR and Orlando Speed World. Did a 12.6 at Gainesville raceway with a throttle body shut down at the 1000' mark. It also did several boost test hits as well. The 03 was in full street trim with 22" SRT10 wheels at the weight of 5752lbs. Never changed the filters or trans fluid after putting the 03 back to stock. Just left the modded sharadon trans in it with the oem tc. Been driving it daily back and forth to work with various trips.
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PS. Never do a wot overdrive to 2nd prime down shift. That's what destroys the od clutches in this trans.
This is the modded Sharadon trans with the Smart Tech OD hub and the increased line pressure spring in the trans fluid pump. This is the same trans that did a 12.7/12.8 @ 105 to109mph at PBIR and Orlando Speed World. Did a 12.6 at Gainesville raceway with a throttle body shut down at the 1000' mark. It also did several boost test hits as well. The 03 was in full street trim with 22" SRT10 wheels at the weight of 5752lbs. Never changed the filters or trans fluid after putting the 03 back to stock. Just left the modded sharadon trans in it with the oem tc. Been driving it daily back and forth to work with various trips.
PS. Never do a wot overdrive to 2nd prime down shift. That's what destroys the od clutches in this trans.
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