I have a 2008 Silverado with the 5.3 and 4L60E. Its got a 224/230 cam with .609 lift, FAST LSXRt intake manifold, ported and polished 243 heads, LT headers with a QTP electric cutout, cold air intake, 3200 FTI converter.
idk if its just a bad tune but every now and again the engine light will come on and say random misfire and a few other bull crap codes.
I want more power!!!! Any suggestions?
It make 363 rwhp with 33 in tires and 22 inch rims with a leveling kit

 

 

Misfire could be real or tune related, several things can be adjust to prevent the random P0300 code with aggressive camshaft upgrades.


Smaller wheel and tires too, those are robbing power and making it really slow.

Or slap some 4.56 or 4.88 gears in it.

Or slap on a blower and watch the 4L60e explode, kinda surprised it's lasted this long.

 

 

what heads and intake would you do then? the factory 243 heads are really good for these motors

 

I've thought about that for sure. I'm going to put a small lowering kit on the rear and put some streets and find a good tuner and see how it does. i hate the 4L60E I'm thinking about doing a 80e swap

 

This 60E hasn't given me much problems.. I just put a 10" converter in it and it don't like that. I'm taking it out and putting a 11" I'm gonna do smaller tires for sure. I got the factory 22" snowflakes, I'm gonna keep them. They look damn good on the truck and they ain't that heavy.

 

Much more and the 60e will explode...no doubt.

 

 

Yeah Ive been thinking about just doing a 6.0 or 6.2 swap with the 6l80e, but I haven't found a whole set up.