Johnnystock

iTrader: (6)

Thoses numbers are really high!!!!!!

Top Secret 48

Thanks guys! Futral is one of the best in the business. He has a super mechanic besides himself (Terry) and very knowledgable people n his office (Charley). Good people to deal with.

LS6

This is real strong car

I keep seen the 6.0 engine is performing well with the l92 than the 6.2 engine
I have seen a guy made the same route, where the head is ported and mill to allmost 40 but not cnc, intake is stock ported with kooks headers and catback, cam (227/239) and with tuning made over 500rwhp (i think 512rwhp) & 470rwtq but alot says this is impossible.

When i saw his car, I made my project and even with the same cam spec., but the project equipments is a little different, it is on a LS1 bored to accept 4.0845" & stock cranshaft (3.622"), stock L92 but milled 15 (CR is almost 11.3:1), stock LS3 intake manifold, stock LS3 injectors, TB 102mm, headers 1 3/4" primaries with 3" collector, 3" cat back, UD pulley. I hope to get 480rwhp & 450 rwtq. The tuning will be after a week hopfully.

Top Secret 48

It is easy to make power with these motors, I put a 6.0 out of a 07 model new body 2500 which came with the L92 heads n my 06 1500. I put a pulley, cold air, full exhaust, and the Ls9 cam n it and it put down 410/405 through my factory 20's and the motor is only 9:1 compression.

jmilz28

iTrader: (13)

Good heads and true duals are what put this baby so solid over 500 at the tire. Nice work, especially the torque!

techls1

Actually I think that is a bunch of lies. There is no way a stock bottom end ls2 is making 520rwhp. I have talked to several shops in the area and the most they can squeeze out of a N/a stock bottom end is in the 470 range with top of the line parts. There is no way that that combo put out that kinda of power. I assume, someone went into the motor and did something or someone was playing with the dyno somehow and is just using this as a clever ruse to sell some parts to 20 years olds with Visa cards. The power level is not consistent with what everyone else with similar type parts combinations is making. Even with an LS3 M6 car with great heads and cam combo is not going to make that much power N/a.

WSsick

iTrader: (13)

470 is NOT the limit of a stock bottom end N/A LS2. I have a friend with an LS2 GTO that made 456 with just a mild cam and a FAST 102. The numbers are definitely higher than you'd expect, but maybe the combo was just nailed and just works. That's why dyno numbers should be taken with a grain of salt.

I'm interested to see the car back up the #s with some GOOD mph at the track.

Top Secret 48

My car put down 402 with cold air, full exhaust, and a tune on same dyno. Car went 12.0 @ 117 leaving easy. You do the math now u dumbass! Don't hate bc ur car don't make that power! LMAO!

Charley@FMS

My wives G8 GT "L76 / 6.0" made 452rwhp through the 6L80E stock bottom end and milled heads only with full bolt ons.

Detoxx03

iTrader: (14)

Lol you crack me up. I'm at Futral right now and a heads cam fast intake LS2 C6 just did 488 fresh off of the interstate. Go gag on something before saying dumb ****.

Charley@FMS

ZGLASS

iTrader: (11)

I kinda understand were he is coming from I dont think that 520 is possible with the combo presented by the OP. I know that 520 has been done out of a stock ls2 bottom end. My shop has done it with a head/cam/intake stock ls2 bottom end. But that was with meth injection more compression and a vacum pump and a ported fast 102/102. I do think that 480-490 in the op's car is possible. But my 402 with a better top end made 536/488 so it's hard to think a lesser combo came that close to my combo. But then again all dyno's are different so thats really hard to compare. Especially without all the specs of the build. I mean this combo doesn't even have a fast 102 intake?

Regardless I am sure the thing rips and and is crazy fun to drive!

Charley@FMS

This is another 2007 C6 M6 we just made some pulls on. Stock bottom end Trick Flow heads, Fast manifold, and full bolt ons. The customer installed the parts and hade someone else tune it.

Top Secret 48

techls1

Im guessing these guys are a bunch of Dyno Queens. I would like to see some time slips. I guess my other questions would be that if they were making these made up numbers how are the stock rod bolts holding up? If they were making those kinda numbers the rod bolts and powdered metal connecting rods would really not much of life span. I do believe that with a built 408+ CI combo getting in the 500 range is possible but is still difficult. The other issue I have the made up numbers is how bid of a cam are they running? I looked on the Futral website and he even says that anything beyond the F15 cam has issues with PTV clearance. So even with great heads I dont see how that combo even with an F15 cam and aftermarket heads is putting out 525. I can see maybe in the 460-470 range with a stock bottom end, but 525 just does not seem realistic.

djfury05

iTrader: (30)

Does a stock bottom end LS1 with 522+ rwhp through a 4l60e N/A running high 9's and on the back bumper sound realistic?

ZGLASS

iTrader: (11)

These numbers are more in line with what I have seen.

Detoxx03

iTrader: (14)

It's funny you mention 408 cause they just completed a 408 (he even posted a thread about it in this section) that made over 600rwhp. My car did 408rwhp bone stock with no tune. My trans am with a set of heads would have done over 500 easy. Seems like you need to do more research buddy.

ZGLASS

iTrader: (11)

yes but that 408 was at 14-1 compression on race gas. Not really a street motor. most 408 are in the 480-510whp range so yes 520 out of a stock bottom end ls2 is not the norm. especially with ported ls3 heads and a ported stock intake. I can see were that seems a bit high. Had is been worked TFS 225's with a ported fast 102/102 at 11.8-1 compression with a big cam then I can see those numbers happening.

But Dyno numbers can be different dyno to dyno. So if the car goes out and runs 130+ it's making some good power.

Detoxx03

iTrader: (14)

408's make more than 500 easily