kalildude

iTrader: (19)

im building a cammed 6.0 and was curious about who else has similar builds and what kind of torque and hp numbers you guys are making?
my build is a lq4 block 6.0(370) forged internals, -5cc pistons, 10 to 1 compression. 236/242 .598 .613 115, stage one ported 317s, 150 wet shot, th400 (4k stall), 4:10 10 bolt, stock intake and tb and maf (i will upgrade these soon), dual 255 intank fuel system.

lemons12

iTrader: (71)

Build in sig...

370 +12 pistons zero decked block (near 11.9:1)
231/237 TSP grind LS3 cam
stock ls3 top end
4l60e with a 4K PTC right now, switching to a 300 with a nitrous converter soon
10 bolt
SD

It was built for a 300 hit but that will be a couple months out.

Both TSP and TMS both said 475Rwhp shouldn't be an issue to clear with my setup... I'm hoping for 48XRwhp... Anything below 465Rwhp will bum me out.

kalildude

iTrader: (19)

Anyone else?

Tweek

iTrader: (3)

Stock lq4 bottom end
ported 243s
eps 226/234
edelbrock pro flo intake and tb
t56 and 4.10 gears

495/540 on a 100
549/616 on a 150
pulls were made on a mustang and from my understanding they read lower than dynojets. either way car rolls out.

kalildude

iTrader: (19)

Nice what kind of rearend you got? What stage are those ported 243s?

Tweek

iTrader: (3)

Its in a 87 fox body with a 8.8. I dont even know who ported them lol bought them used from a guy and he claimed they where prcs but when i called with the serial number they said they didnt have it on record. Just know theyre cnc ported and milled .040

kalildude

iTrader: (19)

I see bigger valves or no?

Tweek

iTrader: (3)

They did have stainless valves, didnt even think to measure them. We compared them to a set of stock 243s and they looked opened up a good bit.

kalildude

iTrader: (19)

Okay I hope to make good n/a numbers with my build

silverz28camaro

iTrader: (20)

-aluminum 6.0
-AFR225 heads
-ss4000 converter in 4l60E
-1 3/4 headers
-Fast 102/102
-3.73 12 bolt
-TV.2 Cam 232 234 .595/.598 113 lsa
-11.8 compression on pump 93


This was a before/after with a new Y-pipe merge and fast 102 from 92
https://ls1tech.com/forums/generatio...er-y-pipe.html

Some before numbers with the same engine same tv.2 cam

-With LS6 heads fast 92 ......424 rwhp

-With LS6 manifold ls6 heads .....403rwhp

silverz28camaro

iTrader: (20)

I believe I might have been getting valve float on that latest 464 rwhp dyno pull.....I could have used a custom spec'd cam from pat G using different lobes for high rpm, and I believe the LS2 6.0 really likes cames in the .620 lift range with big converters and great heads

Sales@Tick

iTrader: (3)

I was going to point the valve float out in that graph before you mentioned it in your next post.

kalildude

iTrader: (19)

im curious what is valve float?

silverz28camaro

iTrader: (20)

Its when the valve is opening and closing sooo fast that the valvesprings cannot close it and hold it shut in time for the compression to build up ...sometimes the valve can "bounce" on the seat as well

I had approx. 10,000 miles on these AFR red strip springs and tony mamo sold me some lightweight $500 valves when i first bought the heads from him.. i'm sure titanium might have been a better route.

kalildude

iTrader: (19)

Does that mean your springs are bad or are not good enough for your application?

Sales@Tick

iTrader: (3)

It could be that your springs have insufficient pressure at the current installed height. It could be that the springs even if they were shimmed for more seat pressure at a shorter install height don't have sufficient pressure even then. It could be that the valves are too heavy for the cam lobes that are being utilized. It could be from push rod deflection because the spring pressure is so great and the valves/rockers are too heavy or the cam lobes are too aggressive or all of the above.

There are a lot of reasons for valve float.

TA6spdRDC

iTrader: (2)

370 wth 243 heads. 566/566 with 100shot. Made 406 on motor with 93/109 mix