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Which torque converter for 5.3 mild cam?

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Old 11-21-2017, 05:56 PM
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Default Which torque converter for 5.3 mild cam?

2008 5.3 in my silverado, put in a comp XR265HR cam. 212/218 114lsa .522/.529
http://www.compcams.com/Company/CC/c...csid=1085&sb=2

Works great except when braking I am fighting the rpms. It tries to lurch forward. I am getting in the habit of shifting to neutral when stopping. Not right.

I know I need a new TC but what size and stall speed? This is my daily driver. 3.73's on 32's. I hear the trailblazer 4.2 TC is a good choice at 2600-2800 vs my stock one of 1400-1600
Old 11-21-2017, 06:39 PM
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I had that in my TA, it worked pretty well. I would, and this is just me, put a trans cooler on to help with heat. I would find a newer one if possible. Rock Autp has a AC Delso one.

Last edited by qweedqwag; 11-21-2017 at 06:47 PM.
Old 11-21-2017, 08:07 PM
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Your cam is a very mild one. Just lower the idle speed. If it idles too rough then, you might need some tuning. That cam with the LSA you have should idle smoothly.
Old 11-22-2017, 08:20 AM
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That should not "need" a converter, it should not push through the brakes. That being said it can dang sure benefit from one. I run this one in my yukon and a stock cam and love it.

http://www.circledspecialties.com/4l60-hp-series-278mm

Old 11-22-2017, 08:26 AM
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doesn't sound like a converter issue but something else, either tune related or trans related?
Old 11-22-2017, 05:15 PM
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Originally Posted by fst100
doesn't sound like a converter issue but something else, either tune related or trans related?
Possibly a tune issue... if I’m slowing and shift into neutral the RPMs will rev almost 800 or so then drop back down.
Old 11-22-2017, 08:47 PM
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Originally Posted by G Atsma
Your cam is a very mild one. Just lower the idle speed. If it idles too rough then, you might need some tuning. That cam with the LSA you have should idle smoothly.
It seems to idle smoothly but below 650 there seems to be a misfire every few seconds.



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