Hello, just for fun. How fast are you going with a bb and eddy rpm heads? What are these heads capable of? Post combos and head work done. Thanks

My sig gives my et`s and that`s w/a 470 stroker(400) .680-.660 275-280 @.050 Isky solid roller and home ported rpm`s. I run a 1050 dommy, victor intake dumped into 2" fenderwell headers and 3 1/2" pipes. A 727 w/a 5000+ Continental vert and 4.11 gears make it very streetable and FUN to drive. There`s more in these heads but I left some meat so I didn`t break into oil or water and w/my new fuel system, I hope to go a bit quicker.

Nice combo Thumperdart. What does that car weigh?

Thanks

It`s around 3150 w/me ready to race........wish I could get it down to 2900lbs. but that would require WAY more $$$ and work so, I`ll just add more power soon.

Thumper did you have a m1 intake on there before the victor? If so what did you gain with the victor? Thanks

I have two different motors with Eddy RPM, the liitle one, 4.64 C.I. 440 block has a nearly stock set on it with a six pak and Comp Cams XE295HL cam with 10.40 to 1 comp. ratio. that motors had ran a best of 10.96 at 122. mph in my 3450 lb Duster corked up on Oregon pump gas so far with issues in the trans or torque converter not sure which yet the other motor, 518 C.I. low deck, has a set of Eddy RPMs CNC ported by Modern Cylinder heads with 10.29 to 1 comp ratio, six pak also with a Comp Cams custom grind solid roller cam. That motor has ran a best of 10.28 at 128.+ MPH corked up on OR pump gas so far with no trans or converter issues in the same Duster Those heads flowed 310 CFM at .600 on a Super Flow Six Hundred flow bench at Petis Performance before I put them on the car Do you know the old adage about cylinder head flow and HP available? I have heard that there is two HP per CFM possibiltys so the 310 CFM set should be able to produce 620 HP. My 518 C.I. motor made 718 HP, 744 Ft. Lbs torque the last time it was on a engine dyno I wouldn't hesitate a second to build another motor using them, ported or stock

Properly ported RPM heads will support 650 to 700 hp. How fast depends on car weight and chassis. That is enough power to push a good race car deep into the 9's or even the 8's if the car is light enough.

i was told you couldn't run in the 5's with rpm heads. but, of course we've been doing it for 2 or 3 years now. btw, it's the only door car at our local track that's in the 5's with a flat tappet cam.

a friends car, 3800 pds, 446 cubes rpm heads installed as received (no porting etc.), 850 holey on a single plane intake, mp 590 cam, flat tops .045 in the hole, 11.05 at 119 mph.

10.70 @ 125mph

500ci
MCH CNC ported and milled .030
1050 Dom w/ M1 intake
630/600 Scott Brown flat tappet cam
Diamond Flat Top pistons
3600lbs.

512 ci on pump gas, Eddy heads ported by MCH, comp solid mech. cam (.660/.693 274/280), tunnel ram with holley 750's,4:10 gears, 2950 lbs. with me but holds wind like you wouldn't believe
9.67 135 mph

Going to up the compression big time, switch to alcohol stack injection setup and a little bigger roller cam setup and see what the old girl will run then


Derrick

Hard to say but my car is gutted.............as in no back seat,only the drivers window rolls up and down,glass hood and ft. bumper. I removed all but drivers window cranks and gutted the doors and rear window areas and all of the glass is held up with hose clamps on the tracks. Ghetto baby but hidden by upholstered light door pannels. Plus, I only have a 6-point bar.....

10.14 @135.8 in a 3200 lb (with driver) Pump gas 3.5 in exh. hooker aeroflow mufflers.
440 Source 512 RB 4.10 8 3/4
.660 lifr mech. roller
Heads were ported by me

440, M-1, 1150 Dominator, 304-640 Ultradyne Solid, Ross 11.5, BME Rods, RPM's just port matched to the gaskets.
70 Challenger 2850lbs, Glide with 5100 stall 9" Hughes converter, 4.56 8 3/4.
9.96-133 on motor.
Signature time on squeeze.