Silverado slower after stall converter?
#1
Teching In
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Join Date: Feb 2014
Location: Kennett Missouri
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Silverado slower after stall converter?
I've got an 04 silverado and I just had to put a new motor in it so I figured I'd throw a converter in it while I had it out. I built the motor myself and everything there is good. Bone stock 5.3 stock cam everything. The only things changed were new rings and gaskets. And before with the stock converter I'd put 6-8 lengths on a buddy of mines car. And now with the fuddle 3600 converter I put a half a length on him. Could it be the converted bad itself? Or that the stock cam isnt enough for a 3600? Any help would be greatly apprecisted as its really pi**ing me off.
#3
TECH Enthusiast
TUNE!!! I just put a Pheonix 2,600 in the 4L80E in my Express van. Stalls 2,750 behind my 350. My setup started running so lean it was bogging and even popped back into the intake when I jumped on it from idle. Fixed the tune and it runs MUCH better than before. They were all slightly negative before the converter.
#6
Formerly ScreamingL
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#9
TECH Enthusiast
^^^^ Then also throw in the fact the engine is under less load in the lower-midrange than it was. I was able to bring in the timing advance curve sooner in PE and had to compensate for the lean out I saw.
#10
What parameters are you taking about that need to be changed? I'll be doing a high stall converter soon and was looking for direction of where to look in hptuners.