NTRBL33

already have
Vararam + Spacer
ported TB & Intake
ARH- lts
off road pipe
GM off road exhaust
160 STAT
395/395 W/ MTI TUNE

WHAT ABOUT THIS COMBO

1.7 comp cam Pro Magnum roller rockers
GTII cam
215/231 @ .50 631/644 118 lsa
AFR 205 MONGOOSE HEADS
AFR SPRINGS & LIFTERS
tuning to be done by MTI

andreas g.

You'll need a FAST 90 manifold to even get close to that number and you still might be a little short.500rwhp with stock displacement and any drivability is a tough nut to crack. Then you have to live with the fact that you have non forged internals, and the weak link is those cast pistons. My LS2 made 461rwhp and I don't think much more was a safe number to live with. That motor now lives in my son's C5 and is going strong with 50,000 miles on the clock. I have since moved on to a stroked L92 motor which makes 525rwhp with forged internals. Much safer way to go even though it's more money.

5 Liter Eater

Thats an interesting cam. Very different split on duration (small intake duration), very large LSA and very high lift. The high lift is probably what's driving the rocker replacement. I can't say I've seen any dyno's from a similar cam so I don't know what it would do. Seems like it's suited for an L76/L92 setup.

I'd add an UD pulley while swapping out the cam.

395/395 is really good with those bolt on's.

5 Liter Eater

To crack 500 you will need to squeeze every little bit you can get out of each component. Sell me your ported LS2 intake and put it towards your FAST 90.

chemten

have you thought about going with TFS heads instead of AFR? they seem to outperform them from numbers posted here.

xstang

I have a similar combo with a smaller cam and I'm putting down 449RWHP (SAE)....

AFR 205s unmilled 11.3 compression
Fast 90 with ported TB
215/232 117lsa
Kooks w/cats
Magnaflow catback (0 power gain)
UD pulley
Honker CAI
tune

I'm not sure if the cam difference and roller rockers will net you 50rwhp additional...

NTRBL33

Wow
whats the lift on your cam? How does it idle?
tx
dlj

NTRBL33

how bout same cam and GM L98 heads and L76 Intake?

The Clevite Kid

. . . and who makes this cam (and to repeat, what are the lift numbers with 1.7:1 rockers?)?

peelrubber

I have the small Ling GT-11 on my A6. The idle is ~600-620 RPM with just a hint of lope. It's almost the same as factory idle to an untrained ear. It's a great sleeper cam for the street. No compromises at the bottom end for good drivability. Tq is improved from 1600 on up and the rush begins at 3000. Everyone thinks my A6 is a mere headers-only car. I have similar mods and 440/407. Much more than that, and the OE character of the car changes.

Cobraeater

LG motorsports tested the L92 heads/L76 Intake with one of their new cams for the L92 heads on a stock LS2 shortblock vs. AFR 205's and a G5X3.

AFR 205's, Fast 90, G5X3 cam -495rwhp, 470rwtq

L92 Heads/L76 Intake, G6X92-3 cam-490rwhp, 457rwtq

Here's the thread.
http://www.ls1tech.com/forums/showthread.php?t=651346

Thanks to LG's testing the L92 heads(260cc) are simply bigger than what is needed for a LS2 and cathedral port heads still make more power for a ls1/ls6/ls2.

So if you had a 402,408,414ci the L92 heads would be a good choice.

But for max power for a LS2, I would go with some TFS 225cc heads, ported fast 90, and an bigger cam if you want to get close to 500rwhp.

pennys58

Trickflow is the way to go

xstang

215/232 .601/.578 117 LSA



Here is a Video in car with the catback added (Magnaflow)

1bdasvt

Reaching the 500RWHP goal is not that easy without FI of some kind!IMO!

tjwong

Or big heads, displacement and adequate camshaft to support heads and displacement. IE: 427 LS7 with a cam, and headers will easily do it.

burtonbl103

I just got to 466 rwhp all motor from LPE

1bdasvt

ps,...I love Oregon!!!!

TTRotary

ETP 215s seem to make big power if that is what you are after. I do not think your combo will reach 500RWHP, but I think it is a good combo and will feel very strong on the street. To easily and reliably break 500, you'll need to go after displacement, specifically a 402 with forged parts. Remember that the engine is not the only thing you have to worry about failing when you are at that power level.

TTRotary

Hey George, Did you move or just visiting. Beautiful roads, just watch for those cops, esp. on hwy26 out of Portland.

1bdasvt

No,I'm a native Cali Boy!!
I've been up North,and it's a beeeeutiful place!!