They just got everyhting back together since the fire and he is gonna dyno tune it tomorrow for me then drop it off at my work. Customer service woot!

If I get it back and everything runs good I may go to the track Wed night if it is nice and cool but if it's still 100deg out I am not taking any chances and G-Timer ETs will have to due till beter weather comes around. The Timer was within .12 tenths N/A so I ecpect it should be accurate enough

 

Stock 5.3 heads wont flow as well as stock 5.7 heads, but you will gain power from the raised compression. I dont know if compression will be too high or if they will choke that 383. I know nitrous likes higher compression.
Get some of the stroker guys opinions. There are a couple 408's around here and more in the works. Parish should have some good insight. I think I remember him saying he's got a 408 coming.