Pontiac 400 pistons and cam

[vpap1]

I have a 78 pontiac 400 out of a trans am.
I just finished tearing it down and was looking for possible part ideas.
I looks like it had less than 60k on the motor i might be able to get away with a std bore.
Anyways, i'm gonna keep the stock crank and rods, if still good ofcourse.
I really want flat topped pistions, for the increase in compression, does anyone know where ican find of buy flat tops for my pontiac??????
And I currently have a set of 6x heads, i am going to have 1.77 exhaust valves in place of the 1.66's and mill them a touch.
Next i'm looking for a cam about 280 degrees of druation at .050 and maybe .490 life will 1.6 to 1.65 rockers. Any specific parts anyone had great luck with??????
thanks

[petereggy]

umm are you sure about 280 degrees at .050???? thats fuckin huge man

as for pistons speed pro's powerforged is a good piston but they only make in +.030 for 35 bucks us

[vpap1]

yeah i meant 280 adv duration about 230 at .050
thanks for the piston tip!

[petereggy]

yah I figured that but I didnt know if you were planning on some insane drag motor or something...

umm check out comps xtreme line they seem to have pretty decent cams

[vpap1]

Yeah i want this thing to be steetable for the most part but i want it to be kinda wild street, 450 hp +. On pump gas, 9.75 to 10 compression. But i'll look at comp to see what they got

[vpap1]

Yeah comp cams has a nice cam for my project, an extreme energy cam like you said with 230 236 duration at .050 and .488 .491 lift with higher ratio rockers= perfect ans with 110 lobe separation, thanks anyother tips??????

[petereggy]

umm I had a whole 400 setup worked out that would have made that kind of power

a set of hedman 1 5/8's primarys are good
get some head work done like a 3 angle valve job some porting like 250 and 230 or so
torker 2 intake is good if not use preformer rpm

thats about all I got for now

[vpap1]

Thanks for all the help.
I appreciate it.

[petereggy]

no prob by the way the 2 numbers for the head work are intake flow rate at .600 for the first one and exhaust at .600 for the second