Hey Vic fix the ET for engine masters deal LOL

i have miss placed my Flow data but the heads went 380+CFM at .800 lift.
440-1 Indy head, and Indy maxx block, 440-2 cast single four intake.
4.44 x 4.5 stroke 557" 15.5:1 with a toilet injection methanol setup.
2100lbs car 175 mph. Typical 8th mile racer though...ran 143-144 mph every pass it didnt matter if it was July or October.

Here's two senario's,

#3178 weight
311 flow
268 int 274ex duration @.050
132.19 mph


same but with a 277int 274ex duration @.050

this might help me decide which cam to run this next season.

Vic, here's mine
365 @.700
cam .692/.702 276/282 dur, I know I can use more cam
these are the card specs I dont know what the valve see's
weight 2410#
speed 149 best
I see it as 615 hp

My 360:
289cfm @.500 lift
.585 lift at the valve
made 560HP at 7300rpm
went 127.xx at 3350lbs.
D.A. rougly 2200ft.

The standard-port Stage VIs on my RB 452:

Lift-- Int / Exh / +2" tube
.100 -- 67 / 56 / 56
.200 - 142 / 104 / 107
.300 - 204 / 148 / 156
.400 - 253 / 185 / 198
.500 - 287 / 214 / 233
.600 - 307 / 234 / 257
.700 - 310 / 246 / 273

266 @ .050" x .600" (gross) solid flat-tappet cam

Race weight 3755 w/ driver

Trap speed on my best-ET pass was 126.4

Just a quick rundown for the last few participants. (Thanks for the input)

Doug______532 HP
Bob_______865 HP
Bill________585 HP
Mike_______615 HP
Brian______530 HP
Brad_______585 HP

Jim, those were 974 heads. Same port.

Does 705 HP sound about right?

hey Vic here you go
416 w/cnc Indybrocks
246/254@ 50 .590 Lift with a 108
2961lbs with me in it
4.88 with a 32x14
10.35 at 130 mph

flow
.100 73.7
.200 137.0 108.7
.300 199.3 150.2
.400 253.2 185.6
.450 275.2 185.6
.500 291.7 212.9
.550 302.4 219.8
.600 306.9 225.3
.650 310.5 228.8
.700 313.9 229.3

they where flowed on a 4.25 bore but are on a 4.070 x 4.00 motor

385 @ .800, 2470, 169

Woody, that's right at 500 HP

I do see a trend here, concerning the air flow.
The BIG engines get more power out of the air
they have available.....typically.

Here's one for ya Vic cam 260@.050in .420 lobe 1.65 intake ratio head flow @ .650= 325 / .700=331 trap speed 69.7 200ft in the mud

That cam's way too small Craig.

555 Predator 545 cfm at .900 made over the 1120 hp that the calculation predicted

Way too small But I like my new intake rockers

Is it over .800" lift? I posted all my secrets first.
Oh wait, it's also the slowest.

Did you dyno the engine? 920 close?

not over .800. and not a secret, just the new owners request. never dyno'd but that was my guess 910-925. I think there was more in it with different gears, was turning 7650 with the 4.56 and felt flat at the stripe. Have 4.30 gears on order for the Predator motor but the date gets pushed back every month.