Just ran my 511 build numbers thru Dynomation5. 654hp/627tq. I think that's probably real close by the feel of it compared to my 590hp 408 I had. This program was real close with my SB build. Was hoping to get 700+ on pump gas. Looks like compression and more cam will be in order. 511 with E victor max wedge heads with solid flat tappet currently.

You are gonna have to take it to the track & tune 1st

The track always shows you what you have. I think it would be lucky to run a 10.50 the way it sits.

Put a roller in it

Read your post quickly and I'm just gonna rattle off what came to mind:
1. F**k those dyno software programs. I own four of them, ranging from cheapo to "Professional" level and NONE of them give results that match what I've found in the real world without my gaming the inputs significantly to tweak the results.

2. How much does your car weigh with driver?

3. Is it a stick car or an automatic? If auto, what type of converter?

4. How much gear do you run and with what size & type of tires?

5. What are you running for fuel? Have you tested different timing settings?

6. What's your performance goal? I don't mean "700 HP on pump gas", I mean an ET goal. If the car ran 9.99, would it be legal at the track vs. only going 10.00?

7. "Seat of the pants" testing on the street is next to worthless. Too many variables, too little traction, etc. I've done things in the past that I'd swear would show up as improvements on the track that didn't, but my "butt dyno" told me it would.

8. Until you either pull the engine and put it on a reputable engine dyno OR spend a solid day at track working on the tune, so that you can get some real-world #s, you have no idea beyond an educated guess what that engine's making.

what are you putting it in ?
my 505 makes maybe 615 and has gone 10.53 @ around 3660lbs .
I only have cnc 440 source heads and 4150 carb.
until you run it you are only second guessing .

Tex

Gonna get the intake ported for now and run it. I think what would really wake this thing up would be to shave the heads .030" which would put static at 12:1 and install a roller like the one Dom runs. Something like 276/281.

I agree with all of that. Been there done that. If i think its same performance as my small block then its probably slower. The track always humbles me. 9.99 or quicker has been the goal. I figured 700hp would get me there. Race weight is 3380.

Wallace calc says 654hp with 3380 weight at best should run 10.07.

With a few tweeks you didnt make your smallblock would have run 9's. Lots of very similar combos out there doing so

If it would of stayed together it would been in the 9.90's im sure. Those indys were maxed out per Dwayne Welder and it was 13:1 compression and 80# lighter. I like the BB though. Ill get it figured out. Its all just time and money right now. I think most would love the way it runs, alot of fun to street drive. My goals are usually lofty thats all.

Smallish cam, smallish numbers. You want big numbers? Put a cam in it and run it to 7,800. I know from my "butt" experience that that big block is gonna feel way different than a 408.

Didnt you run 10.30's with it?

10.35 was its best run. Solid 10.40's last season i ran it . it went 8 season street/strip.

I agree. But really not day night difference like i expected.

Have you put the engine in the car yet? I ran a buddy of mines Dart with a 414 that runs about the same e.t. as my Challenger and it was night and day different. The small block felt like it was going 10 grand down there and not pulling at all compared to my car.

Yeah. The 511 been in a couple months now. Been tuning on it with a wideband with what little time i have. Runs good, just not as good as i expected. I can feel more torque over the SB. Breaks the hoosiers loose at 35 in 2nd gear. SB couldnt do that. Guess i was expecting something i might be afraid of. Not afraid at all.

Bigger heads, bigger carb. will make more power and go faster
My old 518 C.I. 400 pump gas stroker(4.375x4.300 stroke) ran 10.30 with the ported Eddy RPM and the low deck six pack at 127.+ MPH a bunch of times. Swap heads to a set of Indy SR M.W. ports and a 400-3 intake with a single 1050 dominator and it ran low tens at 134.+ MPH, same cam, a little more compression, 84 CC heads to 76 CC heads, 10.29 to 1 to 10.76 to 1 comp ratio
That car weighed 3450 Lbs. with me in it, it ran that through the 3.0 inch full exhaust system to the rear bumper and the air cleaners on both set ups

Not far off from this 511 cab. Like said earlier. Bump compression to 12:1 and stick the same solid roller in it that Dom uses.

Without dyno testing it, you'll never know what it really makes....... Period.

You want 700hp...... For sure?
Put it on the dyno and start swapping parts til you get there.
Then put it in the car and see what it runs.

The time slip is a report card on how well the entire combination works..... Not just how good the motor is, or how much power it makes.

I've seen first hand both ends of the spectrum on that.
Cars that actually exceed the performance of the calculators, and cars that don't even come close.

I just had a motor on the dyno about a month ago..... Made 443hp.
Two weeks ago it was in the car at the track for a test n tune.
Went 11.34@117, at 3600lbs.
Shows 445 on the Moroso chart.

I know if I had that pile of parts for your 511 on the dyno, I'd be expecting more than 650hp.