ok i have a 95 lt1 and i love my car so i bought a new motor to tear apart and try to get at least get 400 horsepower out of the internals and still be street legal i dont know what cam to choose as a medium lope and duration and any other tips would be great .....thanks

 

check out elliotts portworks and see what he has. if interested give him a call and let him know what you have planned. he will set you up with the right combination.
http://elliottsportworks.com/?page_id=32

 

what do you mean "new motor"?

anyway, 400 HP is a pretty moderate goal and can be done with stock internals. the key will be the top end meaning heads and cam. assuming you have all the supporting mods such as headers, catback, cold air intake, gears, torque converter(higher stall).

if i were you and depending on your budget, i'd build a 355

stock crank(re-polished)
scat forged i-beam rods
diamond forged pistons
LE2 heads(lloyd elliott)
a custom grind cam from lloyd
1.6 rockers
pacesetter headers
magnaflow catback
k&n cold air intake
3:73 gears if auto and 4:11 gears if manual
yank ss3600 torque converter(if auto)

that will put you right around the 400rwhp mark and will be reliable as heck. go all forged in case you decide to throw nitrous at it later down the road

 

^^^ agree and have the intake ported and some 36 lb injectors and a ecm tune.

 

yeah i may have been a little to dead on with the figure but more is better and yes i have the supporting combinations including ram hood (14 lbs) forced induction, venom maf sensor pacesetter long tubes all welded into 3" magnaflow exhaust with stock 3.42 gears

 

you mean an SS hood? or like a trans am hood? the SS hood doesn't flow as well as a
CAI, so if that's what you have, i'd suggest switching to a CAI. the trans am hood is nice though

 

no not ss hood its along the same set up as the trans am hood that goes straight to a boxed in knn air filter

 

yup that will work well then