Okay guys I have a 511 low deck and trickflow 270s for solid roller. Car is mostly street some strip. 4speed cuda full weight.
I’d like to lean toward reliability as long as none of my choices kill power and torque.
What intake, header, camshaft would be optimum and still take advantage of the heads?
I’d like to run tti headers but it’s 1 7/8 or 2 to 2 1/8. I have a Trickflow intake but it’s not going to open up enough.
What would I make with 1 7/8 header, tf intake, a 255@050 roller vs 2 1/8, Indy intake, 265 roller?
I’ll port match the best I can? I’d like to use a gentle cam. Is a 650 lift easier on things than 690 lift?
Please just give me your thoughts and opinions.

nobody has any input on this? 🤷‍♀️

Its a 4speed.....What first gear and tire height?

Drqgula it has the TA 4-speed with 2.47 1st gear. I’m thinking a4.10 with 30” tire.

I guess I’m not asking specific enough questions.
I want to make 700hp and a big torque curve. It’s 11 to 1.
How would you do it w/solid roller?
Intake?
Headers? Can’t find a 2” but tti has 1 7/8 or 2” to 2 1/8 step.
Cam? Duration and lift?
I’d like to reach my goal and be as conservative as I can get away with.
Where do I need peak power to be?

Oh and will a centerforce clutch be enough?
Any input would be great. I’m not sure what it takes.

Dougs do a 2"header , not sure if it has a low deck version . I have the D452 on my RB .
You will need a big cfm carb , probably easier with a 4500 . I use a 1050 on a Super Victor .
Roller cam choice , cant help i use a solid flat tappet for durability . Maybe look at a custom with a softer ramp if street driving .
Tq well you have a stroker so should have enough especially against a clutch . Cant help with that i run a TF .
As to conservative thats subjective . I am @ about 670hp shifting @ 6500 (11.0:1). I know my RB stock block gave up at about 620HP shifting @ 6000 after about 18 months of daily driving and regular racing .
Hope that sort of helps .

Tex

Tex you have a good running combo. I have a 1050/4150.
What’s your duration? I can go 6500 no problem I just didn’t think I’d need to.
I have a 8cc flat top so i can go 11 to 1 if I u shroud the valves. Otherwise it’ll be about 11.5.
Doug’s doesn’t do a 2” low deck. I may just go w the 2 to 2 1/8

Viper ,
mine is 272/272@050 , .600 nett lift
With cnc stealth heads , Victor 440 and a Prosystem HP1000 i modded , i went 10.50s shifting @ 6000 .Tried 4500 + Super Victor for no big gain maybe a little more consistant. The TF270 with Super Victor/4500 made the converter stall rise 200rpm which is why i am running a little more rpm ,plus the extra block weight . This is through street exhaust . never have run it open .

Tex

Tex if my combo runs the mph yours does I would be happy.
I should be similar weight. I don’t know why but there’s no intake choices foe low deck and less
header choices as well. After some thought I do t see what the 2” step would hurt as I’m running 3” exhaust as well. May use cutouts for strip. The only mw intake choice is Indy. Not sure if it’s too big. But it is 511 cubes.
Being the header Intake are the only good option without compromise I’ll have to go that route.
I guess I’m down to cam choice and gearing and wondering what the cam choices will do to the curve.
I want big flat curve so I’m guessing 108lsa.
255 too 265@050 and 650 or less lift.
Thoughts?

Look for posts from Andy F. He has done some tf 270 head engines.
You should call some cam experts to see what they come up with.
I haven't looked at the 270 flow numbers, or know much about your engine build to figure cam specs?
I do think you will need more duration / rpm to make 700 HP.
2" headers, or 2" stepped to larger with 3" exhaust. You may need ceramic boot plug wires like Accell 9000 with the large headers.

Here is a Hot Rod article an Andys engine. I would use the same cam they used 264/268Comp Cams HXL/HXX lobes
https://www.hotrod.com/articles/dyno-day-trick-flow-270-mopar-heads/

http://arengineering.com/tech/

In my 499 (500) low deck with MW Victors, I used the Comp HXL solid roller cam lobes, but I should have used the HXX lobe on the exhausts, likely easier on the valve train with the HXX exhaust lobe.

Okay guys what do you guys think this combo will make for power torque? I have the short block/heads.
My bottom end is
Mahle 1.12 ch pistons
Roughly 11.5 compression
Scat 6.7 rods with 2000
Source crank 4.25
11.5 compression
Tf 270 heads
Yet to purchase but current plan
ndy 400-2 port matched
1050/4150
2 to 2 1/8 tti headers
264@050 cam 650 lift 108lsa
1.5 rocker
Thoughts?

I really like the Comp Cams solid roller grind I had in my old pump gas Duster, it was 260@.050 on the intake lobes with .420 lobe lift and it was 266 @.050 on the exhaust with .409 lobe lift ground on a 108 LSA installed at 106 to 107 intake lobe centers, I change the timing set once and got a little different ILC on the second set.
I ended up switching the rocker arms along with the lifters the second year I ran that motor in the car due to having issues with the first set of rockers and having two of the original lifters fail, I ended up with a set of Crower solid roller lifters and a set of Harland Sharp rocker arms with their 1.6 ratio and I ran the lash tighter by about .012 to .014 when cold and then made sure they where from .006 to .008 tighter when warmed up
That set up pulled really hard from a 850 RPM idle up to over 7000 RPM with the CNC ported 440 intake size Eddy RPM with the low deck six pack set up and the same results with the Indy SR M.W. size intake port heads and a Indy 400-3 intake with a 1050 CFM Holley Dominator
Sorry I don't know the lobe numbers now but hopefully you can find them in Comp lobe catalog with these numbers
With the 4 speed and that 2.47 low gear ratio I would installed it between 103 to 105 ILC

Cab how did it run with the sr heads? That would be conparable to the tf 270 I think. I like the profile. What do you think the power difference would be with 1.5 vs 1.6 as I want to drive the car a fair amount. (7-800) a year maybe. Also do you feel the Indy intake needs more than port match?
Thanks Cab.

Viper ,
108 is sharp and punchy , what mine is , but some would say wider for less peaky tq but 4.25 stroke solves that .108 also means no power brake vacuum
I have a Source 4.25 with 7.1 rods
My exhaust is the D452 , 3 1/2 "collector 3" exhaust to dump at diff , H pipe and Hooker aero chambers . NO cut outs
4.1 gear 30" radial slick
I forgot , i run on pump gas . Australian 98 not oxygenated . Probably similar to your 95/96? No additives .

Tex

FWIW I've been running an Isky .680-.660 276-281 solid roller for years in my street/strip Dart and it has gentle lobes so it's not a spring killer and makes great power from down low well past 7000 r's......

I’d like to call Duane Porter for a cam, but the comp cams have gotten outrageous expensive.
Wasn’t there someone on here that made like 713/708tq with a similar build? I can’t remember who.

We did a pump gas 505 with TF270 heads, Comp street roller cam, ported Indy intake and a Holley Sniper system a while back. It made a hair over 700 hp and 650 torque. That was with 2 inch dyno headers. The car is almost finished, should be running by the end of the year and then we'll find out how it drives.

OK, the compression ratio and power expectation helps with cam selection, IMO.
I don't have any TF combo to compare to, but this is my input.
511 CID with TF270 heads can make 700 hp pretty easily. I would prefer slightly over 11.0 CR, so if the final chamber size (milling heads?) and space above the piston (compression height and valve reliefs can get you closer to 11.5 CR; that would be nice.
The header choice will have people liking both. But I say for mostly street and a 4-speed, go with the smaller headers; even though peak HP will be a little less.
Cam duration between 265-270 degrees at 0.050" tappet lift. Valve lift with 1.5 rockers 0.620"-0.660".
With the TF intake port exit slightly improved, I would expect peak power of my picks 6000-6200 rpm. Low end (2500-3500 rpm) torque will be better with the smaller headers so you won't have to down shift to the torque peak around 4900 rpm.
Even with 11.0 CR, a 260-265 cam with 0.640" lift can make the 700 hp around 6000 rpm, torque peak around 4600 rpm. But if it only make 695 don't be mad.

The engine we did used a Comp street roller 260/266. Lift was .650 range due to the T&D 1.65 rocker arms. I think compression ratio was in the 10.5 range but I'm not sure. I think the intake has to be ported to hit 700 hp, as cast Indy intakes are really ragged. The torque was close to 650 from 4800 to 5600 so a big flat curve. Peak power was in the 6000 to 6200 range.

I run a 31.5" tire with 4.10 gear, and that's a bit much on the street....I would go 3.91ish....