For performence, what AFR heads can fit my 2005 Chevy Silverado with a 5.3 engine size?

I've put gibson shorty headers, superchips programmer, K%26amp;N intake and its in the process of getting a true dual exhaust? im just trynna get as many ponies as i can to keep up with a lightning! GLAD TO TAKE SUGGESTIONS ALSO?For performence, what AFR heads can fit my 2005 Chevy Silverado with a 5.3 engine size?
The 205 cc Mongoose street LS1 heads should work well. Swap the camshaft while you're at it. If you call AFR, they can suggest a cam that will work well with their heads. A head and cam change along with what you've already done should put you close to Lightning territory. Also, if and when you do the head / cam swap, you'll be best suited to have your ecm custom programmed by a shop that's familiar with LS1 edit, etc. Hand held programmers don't cut it once you've done som emajor mods.For performence, what AFR heads can fit my 2005 Chevy Silverado with a 5.3 engine size?
McLaren got it. The 205cc AFR Mongoose heads will fit that thing, and their flow numbers are impressive. I'm hoping to order a set for my 1999 Z28 later this year. Also, I agree with his suggestion for the new cam. While they are in there installing the heads, you might as well install a new cam for even better power numbers. It will also save you another "Tuning Fee" if you do them both at the same time.For performence, what AFR heads can fit my 2005 Chevy Silverado with a 5.3 engine size?
put a bottle on it horsepower injection at the touch of a switch cant beat that