454navyss

iTrader: (46)

How do i tell what a good FI cam is? Just from what i have gathered, a close split duration, big lift and a large LSA, am i right? I am thinking about an iron block ls1, 317 heads with a 76mm turbo and want to pick a nice big(ish) cam for it, not over about .600" lift though. give me some numbers to think about. Thanks

1slow01Z71

iTrader: (36)

Duration has much more bearing on power than lift does. Also its overlap that matters with FI cams not just the split and lsa. More overlap is a direct byproduct of a wide lsa.

MikeGyver

iTrader: (5)

You don't need big lift, you don't want overlap (that's why the "large" lsa), and the big-ishness is only according to what rpm you want peak HP at.

MikeGyver

iTrader: (5)

You meant to say "less overlap".

454navyss

iTrader: (46)

I will probably only turn it to 7K or so, maybe a hair more

MikeGyver

iTrader: (5)

Then yes, you will need a big(ish) cam. Sorry to be of no help.

old motorhead

iTrader: (10)

[QUOTE=454navyss;4598777]How do i tell what a good FI cam is?

You quite simply run it by Pat G and see what he thinks. The best 25 bucks you'll ever spend.....other than if you catch Glenlivet scotch on sale...

old motorhead

iTrader: (10)

Why not 226/230 114lsa with .600 lift on both sides? 0 overlap, should sound mean with low idle speed, and should make enough power on mild boost to break lots of sheet. Keep this quiet....it's a "secret" grind....

trever1t

iTrader: (14)

What about reverse spit cams for turbo, they used to be very popular, no?

old motorhead

iTrader: (10)

That kinda gets back to the match between turbo, vehicle weight, manny/auto tranny, gear ratio, boost level, etc. Makes me want to get the input of a pro. Reverse split cams are a tough sell. How many cams have you seen with more duration on the exhaust side? N/a, s/c, turbo. Maybe a custom grind, but you'll be hard pressed to find an off the shelf grind with more on the intake side////? It might be better, but we're too dumb to know.