511 TF 270 build questions!

I have a 511 coming together and would like it to make as much power as it can with what I have. As close to 700 as possible.
11.5 compression
264/268 .660/.652 on 108 solid roller
1.5 Mancini rockers
Indy 400-2 single plane
2 to 2 1/8 step header
1050/4150 carb
The motor is street/strip so no dominator. Although I may try one on the dyno.
My main question is about the intake. How much porting is necessary on the intake? What would it make just port matched vs more porting. Does anybody have pics and details?
How much would a 1.6 rocker help power and how would it affect longevity?
And second what should this motor make for power and torque for the average person?
I do plan to have it on a dyno in a few months.
If you have a similar build or other thoughts feel free to share.

I use a super victor on my 505 , i port matched it and cleaned up at carb flange . Went back about 2/3 " @ ports .
I would expect you to make a few more hp than me as i have 11.0:1 and a big sft cam , 0.600 nett lift
I also run full exhaust to diff . I would love to try 1.6 but as i have crane 1.5 i cant buy replacement 1.6 . They might be a bit harder on springs .
Times in my sig , 10.25 was on 28" radials , World block was on 30" radial


Tex

I had to do quite a bit of grinding on my 400-2 to make it Max wedge size. also it had a lot of core shift .

We only have a 10:1cr mild street/strip motor, 589ci though, runs a small .625"-260/270@.050 s/roller, cnc365 -13's, 440-2 don't know if its been ported or matched, small 950HP carb, 2.1/8>2.14" -4" collector TTI's and made 695hp on the dyno, mph/weight through full exhausts shows we are only 20-hp off that.....you should do 700hp with your 11.5:1 combo assuming you got good heads which you don't mention.

You can see the scribbed marks around the ports, this was just the rough in, I followed all the way through the roof of the runner,

All the Indy 400-2, 400-3 ,440-2 and 440-3 all, both early and late castings, had M.W. size intake ports.
I've never owned or seen a 400-1 or 440-1 intake, are they stock 440 size intake ports?
As far as HP and torque with Indy SR M.W. size intake ports and 440-1 ported M.W. size heads dyno tested the same short bocks made 50 to 70 HP more with the bigger heads using the same intake, carb, camshaft and compression ratio. The pump gas stoker 400 517 C.I. motor 10.78 to 1 compression ratio made 727 HP with the SR heads and 775 HP with the 440-1 heads.
My 440 526 C.I. high compression test mule motor made 775 HP with the Indy SR M.W. size intake port heads and 845 HP with the same 440-1 heads that I had used on the pump gas 400 stroker motor.
All testing was done at Karls machine shop on his DTS engine dyno in Klamath Falls, OR at 4300 Ft above sea level back in the spring of 2010 or so

What heads are you going to use, Trick Flow 270?
I haven't used any of Trick Flows parts yet but I am looking forward to trying some of them soon
BTW, Holley 1050 CFM Dominator carbs with the original List # 9375 work great on the street, not so on the later #9375 HP versions
I did have to lean down the front idle feed fuel circuits and the same on the front transition fuel feed circuits to get them lean enough for me to like them that way

You can buy them already max wedge from Indy, but they come unported & they are in between 440 port & Max wedge size

Your build is very similar to my 505. Your cam has slightly more lift and slightly more duration. Not much. But I use the Mopar Performance 337 intake. My carb is a 4150 and flows 1000 cfm. I have Hooker 2 inch 5209 headers. My compression is just under 11.2:1. Untouched TrickFlow 270 heads. Intake was port matched and nothing else was done to it.

My motor made 713 hp and around 709 torque. I would think that yours should make more, but I don't know how that intake will perform versus the 337 intake. Also street/strip.

Sorry guys. The heads are Trickflow 270 heads. Only intake choice for a low deck max wedge is Indy 400-2. I read in Andy’s articles it didn’t make great power out of the box. I plan to port match it, but want to know if it needs more and what would I gain. I don’t want to find out on the dyno it underperforms due to the intake.
Lift at the valve should be .640ish. And closer to .680-.690 with 1.6. I’m curious what that would add for power. 10hp isn’t worth it to me. Closer to 20 I would consider it.

Markz528- if my motor makes the power yours does I would be beyond thrilled.

Tunnel ram VERY street able and super fast.......

Sorry if i missed it, but have you looked at Trick Flow's intakes? Think they have one for that.

I had a tf intake. They are a nice piece. But there’s nowhere near enough material to bring it out to max wedge. Not even close. So I traded it for my cam. The only acailable intake that’s max wedge low deck is the Indy.
Dominique it’s really tempting but I’m just not sure I’d like the look on my Cuda. I would love to see what the difference is on the dyno though.

What do you guys think a TR would be worth on this combo? With 650 or 750 carbs

I went tunnel ram on my 511 and i would guess 30-45hp and a lot of torque. I understand the Indy 400-3 and a Dominator is not what your looking for, but i can offer you my old set up which ran 10.06@134/3400# . This is a Thumpercarb using BLP blocks and ported by me 400-3. PM if your interested. This is a very streetable well tuned carb, easy starts and clean plugs no problem.

Here is my Indy tunnel ram set up which is 1 full second quicker from 60 to 110mph, so yes the t rams are better.

The Indy 400-2 On my 500" (499) low deck 400 block seemed to have a bit of core shift. I port matched it pretty deep to the Victor MW heads.
On the rockers, not sure? do the heads flow that much more at the higher lift to be worth it?
I have the T&D 1.6 rockers on the 500" engine, 0.726" Lift @ 1.6:1 ratio with the Comp HXL lobes.
Seems like too much for the exhaust side. I'd like to switch the exhaust lobe to the exhaust specific HXX lobe, and maybe run a 1.5:1 exhaust rocker to reduce the valve train stress.
I think trying to open the exhaust valve quickly against both spring and chamber pressure may have been part of me breaking the rocker stands.
I didn't have issues with the stands between the intake valves, but both center stands, and one shaft stud on the end of the shaft had broken on the original set of heads (along time ago.)

I'm running a pair of 650ish billets and my Dart has never ran harder and felt this good compared to a single Dommy. I will never even consider a single carb deal again cos no single manifold on earth can give you the distribution and power of a pair of properly sized and set up carbs......

It helped to have a tunnel ram, too But I don't want that sticking through the hood... can you recommend a good dual-quad manifold other than a TR?

No clue on that.....