87lsttop

iTrader: (2)

I have a forged tms built 370 with 243 heads, ls6 intake, id 1300x injectors, 4303 pump, tick stage 2 cam through a th400 it also has win s366 turbos with turbosmart wastegates and bov with treadstone twin intercooler. Is it likely to expect 1000 on 20 ish lbs or no?thankd

Game ova

If it doesn't, put 2 bullets in it at point blank range.

Drewstein

That confident in it? If he's looking for 1k rwhp I think his heads, intake and injectors won't support it. My guess is 800s through a th400. It'll still haul *** though.

RonSSNova

iTrader: (3)

Dyno queen?

87lsttop

iTrader: (2)

Definitely not a dyno queen. Just looking for some expectations. Im more looking for those 150 mph 1/4s like yourself

yenkomike

iTrader: (2)

on gas yes on e85 the fuel pump will be out before 1000hp. the rest should make it . hell ive went 142 mph with a truck intake and 80 dekas on e85 with dual 380 pumps.

Game ova

Unless you are trying to race a limosene, it does not take 1000rwhp to hit 150 at the trap.

SLOW SEDAN

iTrader: (13)

Agree, we've seen ~159 at 3700lbs with 950'ish.

I would be, we easily make that with a single on stock heads. I agree on injectors, we used Holley 160's at that power level with good results. The 4303 is close to being done at that point as well. The heads and intake literally don't matter at that power level unless your really trying to hit a number at a certain boost level. It may take a few more then 20psi to reach his goal with stock stuff but who cares it'll handle it.

svslow

My buddy's twin s366 6.0L just went 154mph the other day at 3600lbs.

RonSSNova

iTrader: (3)

Was giving you a hard time.
1000 whp is always tossed out there and myself I think it's harder than it seems.
I've no clue what mine makes and I'm a dyno operator!

My gut gut feel says it will take more than 20 psi.

Ron

Drewstein

I think you hit the nail on the head and we're saying the same thing. The heads and intake will register more psi which means 20# isn't cutting it for that goal. I think you can brute force it with more fuel as we agreed but TH400s don't show well on a dyno.

Game ova

The part about the 400, I believe to be a myth. After I did the auto swap I'm my 4th gen, there was only a 20rwhp drop going from the M6 to the 400..... and this was one the same dyno.

JoeNova

Converter choice plays a massive role in this.

I've had a B&M converter in a turbo 4.8 and TH400 combo slip 30% on a car with 400 HP.

87lsttop

iTrader: (2)

Yes I am contemplating using a second 4303 or a 044 on a hobbs switch to come on at 10lbs or so. Not really set on 1000 but would like to see it at least. 150s in the 1/4 in a 2900 lb car should not take 1000. Im just trying to get a guesstimate on how much itll make. Ive spoke to a few people who run the same injectors and have done various things with fuel pressure to get them to stretch out a little further. I got them for a smokin deal so I went with them. Thanks for all the feedback.

B18B1LS1

iTrader: (12)

What converter? That's really impressive if accurate

Game ova

9.5 PTC....5200 on the brake. Not sure what to think about torque though, made 908 with the M6....showed 1042 with the 400.

87lsttop

iTrader: (2)

Right now i have a 9.75 fti converter that flashed to 3600 behind a 500hp single 5.3l that im gonna use for now til i save enough. Hoping itll flash to around 42ish behind the twin 370. The 400 i have is fully rollerized with brake. So hopefully it doesnt rob too much. I also plan on an aluminum driveshaft if i can or would steel be better at that power level?

transam001

iTrader: (3)

i had a 370 with a s484 with id1300 hit 1064 wheel at 20lbs. stock heads intake.injectors will be maxed out. we turned up the fuel pressure a bit

silvea

iTrader: (1)

If you are shooting for 1000hp on a 370" I'd honestly recommend a LS3 top end. The heads flow much better on the intake side, the intake will flow more, and you can use a 90mm throttle body instead of a 75. This should help quite a bit more. You'd have to sell you 243's and LS6 intake but that should be easy. Like the others I just don't know that 243's and a Ls6 intake is going to make this easy. That's a whole lot of power with the increased flow it will drop the resistance and it should help you meet your goals.

Drewstein

I don't have an explanation for your numbers unless you changed more than you're letting on. An unlocked converter shouldn't dyno what a manual car does given all else, the slip and other factors just give different numbers.

I recently went to the track and with roughly 900rwhp or less on a low boost setting I trapped 153mph at 3700# compared to 1k+ cars trapping 150mph. Dynoed on the same dyno within a day of each other. My th400 car doesn't compare to the M6 guys on the dyno but definitely puts it to them when it counts. I still have room in the setup, that was only shake down runs.