senicalj4579

iTrader: (41)

which intake would be best for an engine making around 500hp? i wanna use an ls-6 but at what point does it start to get restricted?

brad8266

iTrader: (23)

If you are tring to get 500 HP without nitrous or forced induction you will want a FAST 90 with a Nick Williams 90MM throttle body. You will also need great heads with a strong valvetrain, big *** cam, and probably just about every bolton.

lsx24

iTrader: (45)

500 fwhp or 500 rwhp? There's a big difference between the two...

For 500 fwhp that's around 425 rwhp, ls6 intake should work fine.

For 500 rwhp you are getting up there, you could easily use a ls6 intake, and it would work great, but it would make much more power at that power level with a FAST 90/90.

HAMRHEAD

iTrader: (8)

For 500rwhp I would go with a Fast 90 intake and a NW throttle body. This is also assuming you are talking about being NA and not FI.

senicalj4579

iTrader: (41)

I was hoping for 500 rwhp someday. I just wanted to start planning on the right parts so they will all come together down the road later on. Yeah see thats what i'm trying to find out, at what point is it worth switching to a 90/90. So far everyone is saying if i stay n/a i should get a 90/90? so what if i wanna end up doing a s/c or no2?

lol, everytime i think i'm onto something with planning theres always more to these parts lol

lsx24

iTrader: (45)

If you are seriously planning on getting 500 rwhp, go ported FAST 90/90 right away. It's not going to hurt you if you are making less power, compared to the ls6 intake on. But might as well only buy an intake once, if you see your self going there.

brad8266

iTrader: (23)

if you so FI or nitrous 500 is cake, you could use a stock intake.

brad8266

iTrader: (23)

You will gain power, any potential power loss would occur low in the RPM's and would be small, but the gain up top would well outweigh the small loss.

lsx24

iTrader: (45)

No I'm saying you will NOT lose power, so except for cost there is no disadvantage to putting it on.

senicalj4579

iTrader: (41)

ok so would it be better to NOT go to the 90/90 with fi or no2?

brad8266

iTrader: (23)

Its a good thing to go with no matter what, but that intake is expensive.

senicalj4579

iTrader: (41)

oh i got ya. from the post below, i though you were saying there is some benifit to staying with the stock intake if you do fi or no2. Yes! the intake is expensive. I'll tell you though, you got me thinking fi or no2

SS1875

iTrader: (34)

I made it with my setup of LPE 383 stroker/LPE GT1-1 cam/LPE P&P and hand blended LS6 heads 2.02/1.60 valves 59cc, Fast 90mm Intake/NW 90mm TB, kOOK'S 1 7/8 LT's.