for all of the LSX non-believers.......

[americanmusc1e]

I was playing around in Desktop dyno (I know, the power figures are optimistic) the other day with different cylinder heads for my 383 to see how much hp I could gain without a cam change. (currently running vortecs). and the best heads I tested were AFR 195 Competition CNC Ported heads. (http://www.airflowresearch.com/index.php?cPath=24_29),

but in my travels on the internet I ran across the flow numbers for L92 (GenIV LSX) heads and decided to see what they would do on my 383 even though it is physically impossible to do...........Wow, I was impressed, you can get these for less than $1000 usually. LS motors have awesome head flow

here is a link to where I found the head flow info http://www.ls1tech.com/forums/genera...flow-data.html


NOTHING is changed except the head flow and the valve sizes


stock vortecs

AFR

L92