verbs

I see where you're coming from, but again, after reading all the factors I listed above I figured we'd be on the same page.

We all lose 10-15rwhp in Phoenix just from dynoing in 100 degree weather.
If I were to do something as simple as dyno in the winter and put on lighter 17x9.5 wheels, I guarantee I'd be dynoing around 470rwhp/420rwtq. Would you still be telling me my numbers are low? My wheel/tire combo is rediculously heavy. I don't think the 78mm LSX is a real power mod like you are making it out to be. How many people actually gained noticable power going from an LS6 intake to a 78mm LSX? If I had a 90mm LSX manifold then sure.

I'n not disappointed in the slightest. I could easily set the car up to be a dyno queen, slap on a 90mm intake, smaller wheels, dyno in winter, add an electric water pump, run 32 degrees of timing, put my aluminum flywheel and lighter driveshaft back on and probably be knocking on the door of 500rwhp through a 12 bolt. But I don't care to make dyno numbers as my car is no longer setup to be a street racer....it's setup for the track.

Ragtop 99

iTrader: (7)

I know the CF aren't fully accurate, but do your dyno reported numbers reflect the SAE correction factor? What were the uncorrected numbers?

Strong combo. some forged motors seem to make a few ponies less too.

verbs

Yes, this is SAE corrected. Uncorrected numbers were around 420rwhp I believe.

CHRISPY

I would NOT spray the motor below 3000rpm on the dyno. I would have the window switch at 3500-6300rpm depending on how high you want to rev out.

Hitting the bottle at 2000rpm is a bad idea

Chris

verbs

on the dyno it was kicking in at 3200rpms and shutting off at 6800rpms. Rev limiter set at 7400rpms.

C4VetteLS1

Man you must be blind then. Because theres alot more to it than you picked up on...... those are great #'s for the setup considering all factors...

Damian

iTrader: (89)

Im not blind. I see cars like his all the time with drag race drivetrains make equal (or a little less) power with 5.3L heads and small 228-232ish cams.

Just stating the obvious. 447 is low for a 2.5 LS6 head and giant cam like that, 18's don't make that big of a damn difference over 17's.

Personally Verbs I think you should try swapping cams. No offense to LG, this is more of a formulation suggestion. I've done some of my own R&D lately and found that TEA heads like less of a split and/or single pattern cams over big huge splits. I think you'd make more HP and a ton more TQ tightening up the Duration & LSA a bit. It will raise your cylinder pressure also....Something to think about..

verbs

The 18s made 10rwhp of a difference over my 17s....that sounds like a sizeable difference to me. ....aside from that I'll dyno when it gets cool out to put down a 460rwhp # just for you

I agree TEA heads like smaller splits, but nitrous seems to like bigger ones. I will be doing a lot of playing around with cams down the road anyway.

JoeDirt

Sweet setup

Sunset01

So the correction factor increased the result 27hp ? That doesn't make any sense given how hot it was ... it would seem the other way around. I think the correction factors are at least roughly accurate so don't see why cooler weather is going to help you hit a bigger #.

jrp

iTrader: (16)

i think what this really shows is how potent your old setup was.

verbs

My old setup was potent no doubt, but was a street racing setup not a track setup. MY car now will run at least .3-.4 faster than it ever did before at the track N/A, I guarantee it.

verbs

Very hot weather makes your uncorrected dyno #'s much worse than corrected. You are implyng that 100 degree weather should make me have better numbers than 70 degree weather....ask yourself this- why does every one run much faster times at the track in cooler weather than hotter weather? They're making more power.

Cooler weather always yields better dyno results than 100 degree weather, period. EVERYONE in Phoenix loses 10-15rwhp in the summer compared to winter. I've witnessed this happen on hundreds of cars for years.

niphilli

The flywheel is making a big difference as well. A fidanza will make around 12-15 RWHP more than the stock LS6 FW on the dyno. So 447 + 10(wheels)+15 (FW) would be around 472....With that drivetrain I think the results are right on

Sunset01

Sorry, my bad, brain was in reverse. 420 uncorrected makes sense in 100 deg. I know cooler weather makes better uncorrected #s.

2000Blackout

iTrader: (1)

so Verbs when we gonna run em!

Beast96Z

iTrader: (21)

I don't know if I quite agree on the numbers being off, but I will agree with Damian on the split of the camshaft. The TEA heads with a nitrous port flow extremly better than almost all of the heads on the market. You have to take that into consideration when getting a cam with a larger split. If you were using other peoples heads with less exaust flow, then yes, the cam would help, espeacially on the juice, BUT, you made up the diffrence with the heads this time, so there would be no need to make up for it with the cam also. I think it will work, but I believe you are way over kill on the exaust. My set-up with the same heads will be mateed with a cam with 4 degrees of split for a nitrous friendly set-up. If I were going straight motor with these heads, I'd use 0* to 2* of split. It's my personal opinion that your Intake/exaust ratio, assuming the heads and cam, is in the upper 80's, prolly closer to 90%, which I believe would hurt more than help. JMHO from someone runnig a similar set-up.
On the weather note, hot humid air is less dense, thus allowing less air per cubic foot into the engine. When it is cold, there is more air per cubic foot getting into the engine, thus making more power, no matter what the correction factor. I think that's right.

Damian

iTrader: (89)

Thank you Beast.

That was another point I wanted to make but forgot

Ben R

I think they're average numbers. They're not awesome, but they're not lack-luster either. Although considering that LG doesn't skimp on the size of their cams, the assumption that the cylinder head flow is up to par, and the addition of the higher-flowing intake manifold, one would think that the peak HP numbers would be a little higher. Either way, it should be a fun car.

Beast96Z

iTrader: (21)

I don't think the cam is to drastic as far as other cams go. Around 234ish on the X3 is big, but there could be something bigger.....