Time to pick a cam ....

340gordy said
.030 over 340
TRW forged flat tops, about 9.5:1 unless I tweak for more
Air Gap
750 Holley vacuum sec
ported X-heads (235cfm @ .050)
Manual brakes
727 w/3-3500 stall convertor
3.91 rear
Like to stay hydraulic and streetable but will see the track once or twice, may add 100 shot as well . It looks like the Comp and Lunati Voodoo 268's are highly recommended but I think I'd like a little more if my combo can handle it. Xe274 or equivalent ?

Im assuming your peak flow is at .500 lift from the info above and thats the main reason I would get either the comp xe275hl or the lunati 60404 which has over .500 lift,this way you will take full advantage of your flow numbers,especially with 3.91s it would scream.If your running stock type rockers its even more of a reason to go with the bigger lift since actual lift will be less than whats advertised @1.5 from the cam specs.Ive ran alot of the xes in different engines and its hard to beat the xe274 for all around performance but the xe275hl is only slightly larger and gives you the added lift so its really close.I have no personal experience with voodoo cams but I wouldnt hesitate to run one,if you do a search theres a thread with some good info straight from the grinder himself.Theres alot of good suggestions here and I dont think you could go wrong with any of them but if it was mine I would run one of these two lol!.