Pro Stock John

iTrader: (34)

I can see about getting a copy of the dyno, but I can assure that it was running on all 8 cylinders. Car is about 3900 lbs and been 11 flat on a small drag radial. it's been 98/99 in the 1/8th in 3500+ DA so I think between a TB swap, air intake swap, some more tuning I think he'll go high 10's on a good tire.

Pro Stock John

iTrader: (34)

I was not at the dyno, but from what I heard, and his tuner buddy was there in the car, it was on all 8 cylinders.

I urged them to pump for compression.

NAVYBLUE210

4" Intake Tube, 102 TB, Mid-Length Runners
Easiest, Cheapest, Bang for the Buck.
I would do those before changing cam.
Just my .02

AgFormula02

iTrader: (13)

EPIC. Boost cures all ailments!

Pro Stock John

iTrader: (34)

Well gents, he really appreciates your comments, he went ahead and ordered a NW 103 TB. I'll talk to him about the runners.

He currently has a 3.5" air intake, a tube that curves to the driver's side. He'll change that to 4.0" and if there is room to make it a straight shot will try it, but my feeling is he can't do that.

What do u all think a motor like this should do RWHP wise on 93 pump with the changes, unlocked 4L80E?

ddnspider

iTrader: (26)

600whp is not a big ask out of a 460 c.i.

Pro Stock John

iTrader: (34)

Hmmm 488 to 600 would be a big move.

ddnspider

iTrader: (26)

That's why I said earlier that 125 to 150 is a big ask just from an intake tract update. I think something else is off. What it will make with a new intake tract and what a 460 c.i. should make are 2 different things. Tsp and Golen both have 700hp turnkey 454s.

spanks13

iTrader: (5)

Is 610 ft lb at the tire real from the dyno, or was that converter flash? If it made 610ft lb at the tire, you should make >600 hp at the tire at 6500+.

Do you have a picture of the dyno sheet?

Mavn

iTrader: (3)

.sounds like it runs like a heads cam ls1 . Lmao

Pro Stock John

iTrader: (34)

3900 raceweight, and tuning and tires still need a little work.

I'll get a copy of the dyno sheet.

Kawboom

If it made 600 torque with that cam, it should make 600hp.

Che70velle

iTrader: (6)

Intake swap? Re-read my post.

spanks13

iTrader: (5)

Something is way off from the dyno numbers that’s why I want to see a graph. I’m thinking unless 610 ft lb is from converter flash it never made 610 at the tire.

610 ft lb at 4200 rpm would be 488 hp. We already know it didn’t peak at 488, and I’d be surprised if peak torque was really that low. 550 ft lb at 6000 rpm is 628 hp.

It’s just not adding up.

The car runs 11 flat down the dragstrip so we have to assume it’s not into valve float or some other major issue.

488 hp at 5800 rpm is only 441 ft lb it can’t drop from 610 peak to 441 by 5800 rpm.

Che70velle

iTrader: (6)

I’d say it’s converter flash. Seen it on many dyno sheets and made me scratch my bald head until I understood how a converter works. I am not an auto guy.

Pro Stock John

iTrader: (34)

Maybe flash not sure.

Setting that aside what sort of gain would you guys envision from a OEM TB to a 103 NW, and a 4" air intake tube?

ddnspider

iTrader: (26)

I didn't realize you were including a cam swap too and headers in the gains. I agree he can gain that much, but still think something is off on the setup besides breathing through a straw, and it's not the size of the cam.

Che70velle

iTrader: (6)

What’s stock on the LS3, a 90mm? No doubt this engine is severely choked, and you mentioned tuning needs work, which in itself can show big dividends if the tuner is good. On a 460 I’d have to believe that a 4” cold air setup feeding a 103 tb, up from a 3.5” cold air setup into a 90 or even 92 tb would pick up nicely. Maybe 25 or more, IMO. In my experience here tuning is everything on the larger engines especially.

ddnspider

iTrader: (26)

https://www.texas-speed.com/p-3967-t...y-package.aspx

https://golenengineservice.com/lsx-c...gine-upgrades/

700hp with ls7 plastic intakes.

https://www.proformanceunlimited.com...-crate-engine/

750+ with AFR LS3's and a sheet metal intake.

SLOW SEDAN

iTrader: (13)

Agree 600whp isn't out of line with a properly build 460. I had a box stock LSX454 rated at 627hp put down 550whp through a TH400 on a 28" drag radial. That's almost in line with 675 crank hp and that was with a much smaller 236/246 cam but with much the same parts as this build, stock throttle body, 93 pump gas, 1 7/8 headers to 3" exhaust, etc. I see an issue with the HP flat lining at 5800-6000RPM, the smaller cam I had revved clean to 7000+, I shifted it about 7300 with a 3.70 gear.

Same dyno I had my 364 on with much the same mods made just under 450whp and that setup ran low 11's at 4000lbs, something is wrong if a 460 is running the same as that.