Tranny upgrade
#1
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Tranny upgrade
I'm thinking of upgrading my tranny to add some additional HP and TQ. Do I need to replace my entire tranny if I plan on getting up into the 400 HP range or can I get by with an aftermarket rebuild kit and TC? Also I know its been discussed on here before but is it normal to have some tranny slipage when gradually increasing speed when shifting into overdrive on an auto tranny. It happens between 45 and 60 mph. Any help on both of these issues is greatly appreciated.
#4
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Best thing to do is start calling around. HTS, DTT, Goerend, or ATS. Tell them what you want to make for HP and what you do with your truck. If you plan on making 450+ HP, or the trans you have now is tired, then you'll need a full trans.
my vote is Dusty @
www.htstransmissions.com
Randy
my vote is Dusty @
www.htstransmissions.com
Randy
#5
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Originally Posted by ccraver
....but is it normal to have some tranny slipage when gradually increasing speed when shifting into overdrive on an auto tranny. It happens between 45 and 60 mph.
OD on the 47RE tranny is a tall gear.. .68 ratio!(taller than 5th on 5 speed or even 6th on a 6 speed) I keep OD locked out till 55 or 60, so I'm 1500+ rpm after the shift into OD. Sure pulls better. You might try this and see if your tranny behaves differently.
RJ
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It sure does feel like slippage to me but I could just be the motor lugging. It only does it around 55 mph when excelerating slowly. Is there any way to increase HP that I can do without buying anything to put on the truck?
#7
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Originally Posted by ccraver
Is there any way to increase HP that I can do without buying anything to put on the truck?
Randy
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I already pulled the silencer ring out. This trucks alot different than my 95 as far as upgrades goes. What do you think its gonna cost me to get to the 400 hp range and still have a dependable rig? What are my options? Thanks for the help.
#10
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Originally Posted by ccraver
... It only does it ...when excelerating slowly.
400 HP = Edge Comp and medium injectors (100 hp)... new $1300, used in the Classified...
Edge Comp = $400.00+
Injectors = 400-500. There is a great buy ion some BD injectors there now... https://www.dieseltruckresource.com/...1&cat=8&page=2
Those two items will put at 400 HP, but I would do your tranny first...and gauges!
RJ
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