What does anyone think of the power output will this set up make. I have 5.3 with ported FAST LSXRT 102mm intake and tb, p&p 243/799 heads by AI and custom grind cam by AI (218/222 .600 grind). K&N cai, shorty headers, 3.90 gears, and a rebuilt tranny with a 3200 stall.

I will be getting a custom tune, I was thinking Wheatly.

 

did you mill those heads? if not you are losing compression on the 5.3 and that seems like alot of topend just to skimp on the exhaust running shorty headers.

 

If there's a chance that you're looking for higher compression heads for the 5.3, I have a set from Patriot, 60cc.

 

x2. couldnt totally agree more. nice heads and intake. though.

 

I plan on ditching the shorty's for sum stainless works lt. They heads are gonna be milled to reach the same compression as the original.

 

a lil bigger stall would be a nice upgrade as well, should scream up top

 

What stall you recommend?

 

i have the AI 226 package on my built LQ4 there a real nice set of heads and i have a custom grind cam from them 226/230 600/605 111lsa. i think you'll be happy with them.

and do a 3600 stall or even better a 4000

 

Did you mention if you were sticking to the 4L60E or doing something different on the rebuild? I may have missed it.

Lisa

 

So you not only have a Fast 102 but a ported Fast 102? If so you may have more than a stock block 5.3 needs...