To learn a bit more about head choices for 493 to 540 STREET strokers, please post
1cubic inch
2head used
3Dyno torque down low, preferably from 2500 to 4000?
4work done on heads, compression ratio

Going to be difficult to get correct numbers if they are chassis dyno numbers with a good converter. Not a whole lot of engine dyno runs are correctly logged from 2500 either.
Curious what shows up here though...

Greg I can't give you a dyno number but can give an et.
1) 512
2) Edelbrock Performer
3) 7.02 in the 1/8 shift at 5500 in a 4150lb car
4)better valve job and minor bowl clean up, 11.5 comp

9:1 493 RB

OOTB RPM with a good valve job

MP509 1.7 rockers

M1 single plane TBI

500 ft/lbs from 2000 on. 600ft/lbs @ 4000 peak.

Kevin

1 558 cui
2 Trick Flow 270
3 3500-4000-4500 rpm => 599-735-789 ft/lbs
4 Port matched to the intake and the 4.5 bore, 11,1 comp

A bit larger than asked for but>

1. 589ci.....
2. Indy -13 CNC365's
3. @3800-685ftlbs - 4000/706 - 720ftlbs@4400
4. 10:1CR

Indy 440-2/.625/.625" S/roller 260/270@.050, 110.....950HP carb.

I agree it will be tough. But hopefully there will be enough info for making choices to fit various budgets and goals.

Outside your parameters but our 655 made 960ft/lbs at 5500..

505, 10:1, RPM heads with valve job and bowl blend, original Torker, 850vs, 1-7/8” headers, small HFT cam.
Started pull at 3200........ 592ft/lbs.
Peak tq @4000....... 628ft/lbs.

Most of the stuff is run with an auto trans, and there isn’t much point in pulling the motor way down below what the converter would stall at........ so it’s pretty rare I’d pull one down to 3000 or lower.

498 rb stroker
Comp ratio is 10,5 and runs great with europe 95 octane pump gas
Edelbrock rpm slightly ported valve seat work from out of the box
Cam flat tapper hydralic dur @.050 242 246

On rear tires at 2800 rpm 650nm and 3900 rpm 714nm on a 4 speed trans.

Don't have low rpm numbers but 505 ci, OOTB Trick Flow 270 heads with 337 intake, 11.1:1 compression made peak 709 ft lbs at 4600 rpm.........

My 493 with a 440Source 4.15 stroker kit
Indy EZ heads
10.6 comp
Good quench as I drive and race it on 92 pump
Never dyno'd but has run a best of 10.76 @ 125 in my 63 Sport Fury that's 3700 lbs without me. Ron

616fwhp

572"
15:1
-1 heads

749 @ 5400

I see the big inch engines posted so here is one a little smaller .

470 cu
Edelbrock RPM heads . Port matched to RPM intake some minor port work and a comp valve job. 10.72 to one good quench.


Mark

No idea on the torque, but 770hp works well enough to carry the front wheels on my little 512/400 from 440source!

1.31 60ft

https://www.youtube.com/watch?v=j7piYsuPYe8&t=54s

No dyno#s
512 ci, 4100lb 68 Charger , street car trim 3.54 gear 11.04 @ 123 so far.

I don't have the dyno sheets anymore, they went with the car, my first pump gas 511 C.I.400 block stroker motor with a set of 906 iron heads with 2.14 intake and 1.81 exhaust valves and mild porting, they flowed 266 CFM at .700 valve opening on a S/F 600 bench. It had 9.25 to 1 compression ration and low deck eddy six pack dual plane intake with 440 six pack carbs, it made over 400 Ft lb. at 2500 RPM and over 500 Ft' lb, at 3100 RPM and then went over 600 Ft lbs. from there until it made peak torque at 4500 RPM at 644 Ft. Lb. Peak HP was 612 HP at 5500 RPM but that stupid motpr would run faster shifting it at or above 7000 RPM .
I have notice on the pump gas motors I dyno tested, stock stroke or strokers, that had less than 10.5 to 1 compression that hey would make more torque than HP, once the compression goes above that they make more HP than torque
I'll look in the shop tomorrow morning and see if I can find some more recent dyno sheets

My Mega 496 has 12.5 compression, I know a little steep. But w/Bullet custom hydraulic cam & Performer RPM heads, dual plane Performer RPM intake & only a 750dbl pumper made 581hp @ 5400 624tq @ 4300
Sorry cheated, used this on 2 posts
Ken