In a simplified form, yes. That is the most important part to determine this aspect.

I did miss your post about the heads. Yes it is going on with the current 5.3l heads. I talked to texas-speed for a while about whhat cam to go with to improve upon my current 231/237. They said it will be fine with the current heads and i think they flow right around 295cfm above .600. The ms4 makes killer power on stock unported heads so i think i will be fine with the 5.3's. Im gonna spend 1500 on nitrous before i even think about different heads. Im happy with the heads since i spent right around $1000 for them assembled and made 411rwhp on a mustang dyno, which should give me 30rwhp less compared to a dyno jet.

I did chose to put the cam on a 110+4 for the better low-end and midrange power torque. The current 231/237 doesnt feel very strong down low and i wanted a cam that would sound meander, idler nastier and still have more peak power. The 231/237 also has some softer xe lobes so hopefully those lsk xer lobes will help out on some low-end midrange power.

just cant wait until it gets here!

so would the MS4 work well with my 02' T/A with stock untouched 241 heads and LS6 intake and stock TB, but 13/4 long tubes and a Yank 4000 stall?

Finally got the cam on friday the 4th, but had a busy weekend and didnt have time to throw it in. should be in this week and hopefully tuned by next week. Will post up results when its done.

Cool post some number when you are all done.

Finally got some results for the swap. Made 468rwhp and 412rwtq on a mustang dyno. thread can be found here:

https://ls1tech.com/forums/dynamometer-results-comparisons/716767-ms4-fast-90-90-patriot-5-3l-head-results.html