Engine Analyzer and Drag Analyzer.. Willing to put your info in.

[Super73]

69truck,


Are your intake and exhaust runners ported at all? If so I really need those numbers or it's going to be off quite a bit.

[69trk]

yes, they have been ported, and so has my intake. I'll call awesome engines in selbyville de. tomorrow and see if they have any flow numbers.

[ripdog28]

Well then with only a 9.2:1 CR there is only 1 way to get more flow for those big heads. Did someone say Turbo/Supercharger? With the converter being high a turbo will be under load before you leave the line.

['72 Shorty]

Hey super73, here's another one for ya when you get time.

Engine info
Bore 4.030
Stroke 3.48
tolerances: more race.
Electric Water pump? mech water pump
Electric Fan? Yes


Head data:
*----* Intake and Exhaust Valve size 2.055/1.60
*----* Head flow numbers
I E
.200 127 114
.300 178 145
.400 216 164
.500 249 172
.600 268 174
at 28" H2O
Compression ratio 10.7:1

Type of intake Single plane Edelbrock victor
Carb or TB Demon 750 Mech

Header Data:
*----* Tube Diameter 1 5/8
*----* Tube length to collector 30"

Cam info:
http://www.compcams.com/Cam_Specs/Ca...?csid=236&sb=0
Duration at .050" 250/260
Total Lift and based on what rocker ratio 532/555 1.5
Intake centerline 106
LSA 106
What rocker are you using? 1.5 roller

Blower/turbo? no



Vehicle Data (I am going to try to keep this simple and use my aero for the most part).
Total weight 3680
Front/Rear weight bias ~~60/40
What trans you are running Th350
Size converter (STR if you have it) 10"
Gear ratio 3.73
Differential Eaton Posi
Tire size http://www.mickeythompsontires.com/s...ETStreetRadial
295/65R15 Mickey ET Street radial

Are you running N20? no

Thanks

[Super73]

Originally Posted by '72 Shorty

Size converter (STR if you have it) 10"

Need to know stall speed.

['72 Shorty]

Originally Posted by Super73

Need to know stall speed.

Sorry, brain fart, I thought I put that in there. 3800RPM

[69Beauty]

Engine info
Bore 4.06
Stroke 3.48
Factory tolerances or set up more as a race motor? Factory
Electric Water pump? No
Electric Fan? No


Head data:
1.94 IN 1.5 EX Intake and Exhaust Valve size
Pretty much stock vortec head. (062's) did a little exhaust work but nothing to major.
Compression ratio 9.73

Type of intake Weiand Stealth Dual Plane vortec Intake
Rebuilt Qjet. Flows around 800cfm

Header Data:
1.75 Tube Diameter
Around 24" i think. Tube length to collector

Cam info:
Link to MFG's web page or cam card would be best but.. Lunati 60103
Duration at .050" 227IN 233EX
Total Lift and based on what rocker ratio .489IN .504 EX
Intake centerline 106
LSA 110
What rocker are you using? 1.5 rollers


Vehicle Data 69 custom 10 long bed.
Total weight around 4000lbs
Front/Rear weight bias No idea probably 60/40
What trans you are running 700r4
Size converter 2800 stall w/ lockup
Gear ratio 3.73
Differential posi
Tire size 28x12 on back 28x8 or so on front.

[Super73]

GMC70C20


You did not give me your stall speed. So, I let the computer figure out what it feels is best as well as you shift points. It says a 3,600 verter and 7,200rpm would be best.

[Super73]

The engine program spits out crank HP.

The Drag ET program is going to tell you optimal shift points for the combo you have. I can readjust your shift points to the 6,800-7,000rpm mark as I am saving everyones set up. This way if someone wants to know what changes they might see by changing stall speed, gear ratio, tire, little bit of laughing gas, I can put it through for them.. Please keep in mind htough, this is a computers best guess at the combo's we are presenting it so they may not be dead on.

If your set up has not been to a machine shop, balanced and using better rod bolts, I'd keep it bellow 7,000 rpm for sure. Probably that 6,800 mark.

[Tri5Nerd]

Originally Posted by Super73

The engine program spits out crank HP.

The Drag ET program is going to tell you optimal shift points for the combo you have. I can readjust your shift points to the 6,800-7,000rpm mark as I am saving everyones set up. This way if someone wants to know what changes they might see by changing stall speed, gear ratio, tire, little bit of laughing gas, I can put it through for them.. Please keep in mind htough, this is a computers best guess at the combo's we are presenting it so they may not be dead on.

If your set up has not been to a machine shop, balanced and using better rod bolts, I'd keep it bellow 7,000 rpm for sure. Probably that 6,800 mark.

That's what I thought, that without the rod bolts then 6800 would be max for this setup.
Looking at the Drag ET, it looks a little low at the 1320' mark, I would think that I could get more that 105MPH somewhere around 108/109MPH, but that 60' time should be great if I could cut it.

BTW: I do have a little 150 wet shot of laughing gas that I might use once I get it road ready.

Tri5

[Super73]

Tri5,

Here is what the computer says for 6,800 shift points with the current combo.





Here is what is says for that with the 4,600 verter and 4.10's






Now the computer has "optimized" your stall and gear and thinks it would go best with a 5,300 verter and 5.00 rear gear and locking the converter in third. I didn't let it go beyond a 5.00 gear. Might have wanted more..

[Super73]

Any idea on the flow at .300 and .500 for both the intake and exhaust? Low end TQ numbers can vary a lot with out several data points for the intake flow numbers.

[69trk]

I'll call him back, i didn't even think about getting all of that. We started talking about my converter, fuel lines and everything else.

[Super73]

If you read this before you call him back, also get exhaust flow numbers.

[Marv D]

OK, you 'really' want to put EA to the test...
Heres one for you. This is my Nova small block. Without every detail EA will kick back some silly numbers sooooooooo...

Short block
4.165" bore, 9.000" deck height Motown block

4" stroke 37pound Scat Pro light knife edged crank

Oliver 6" rods, custom JE pistons w/ 11cc dish
Cometic 4.2" bore x 0.039" bore head gaskets
(net 13.29:1 compression)

Gilbertson 12 qt screened stripper wetsump box pan w/ Titan oil pump.

Cam,, almost hate to give those specs away, but there onl relative to this combination so,.. A Jay Allen custom roller. From the CamDr (0.050 #'s)
Intake
open 17.09 BTDC
Lobe CL 110.63
I close 68.35 ABDC
Duration 255.73 @ 0.050
Max lobe lift .4548
net valve lift w/ 1.8 Jesel shaft rockers, .819 (-0.018 lash = .801" valve lift)

Exhaust
open 72.18 BBDC
Lobe CL 115.52
close 21.14 ATDC
Duration 273.3 @ 0.050
Max lobe lift .4444
net valve lift w/ 1.8 Jesel shaft rockers, .799 (-0.020 lash = .779" valve lift)

Heads are a set of AllPro 245RR 23° raw castings built by Uratchko. Valves were plunged in at 17°, 2.18" titanium valves, Exhaust are 1.65"castings.

Flow numbers are:
0.1" = 57/44
0.2" = 123/102
0.3" = 190/150
0.4" = 249/194
0.5" = 298/233
0.6" = 335/241
0.7" = 351/256
0.8" = 365/264
0.85" = 374/-

Exhaust is Lemons 2 to 2-1/8" stepped fenderwell headers, 4" collectors, no mufflers.

Intake is a Uratchko ported Edelbrock RR supervictor developed to match / compliment the AllPro runner. Carb is a single Prosystems Dominator (wet flow was right at 1300cfm if I remember correctly,, looking for that build sheet)

Run the thing on gas (VP C-14) and then I'll tell ya what the Superflow dyno said What I'd like to see is what happens when the motor is converted to alcohol. Still toying with the idea of injection, but it will probably be a toilet instead 'IF' I ever make that change.

[Super73]

Marv,

If you want you can take your specs down and PM them to me. For those of you that want to see how accurate it is but don't want to give everyone you combo, you can PM me.



I gave you two sheets since it didn't start falling off until 7,200 and carried fairly well till 8k.

[Marv D]

You guys want to seee why Performance trends Engine Analyzer and Drag Analyzer is one of the most respected simulator softwares out there,,,,
here is the actual Superflow Dyno sheet for the motor detailed above. The sheet scaned so freeking big I felt a link was better than inserting the image. So I made a page and shrunk it down a bit.

That Engine analyzer sutff it's just junk isn't it (LOL). It missed by 8 freeking horsepower at the peak,, that's only 1% folks. Pretty impressive for a program. Try that with DeskTop dyno and see what happens (what a joke) One thing it did miss a little on is the BSFC, this motor is unbelievably efficient. The old 650HP combination would burn a full gallon per pass (including driving to the staging lanes and driving the return road). This thing is making 150 more HP, and I'm burning only 3/4 of a gallon round trip.

One key here to such deadly results,, you have to have EVERY stinking detail, no guess work or you get a guess in return. EA and DA has always been dead on if given complete and accurate input. Nice job Super,, that's a lot of work isn't it!

[Super73]

Not too Shabby. I decided to break it down in to 100rpm incraments for you. Then I put both in to an excel sheet to look at how far off it was accross the full span.











http://73-ls1.com/67trucksetlist/Enginedrag/MarvD.xlsx



It was an average of 1.84% off the full RPM of your pull. It read a little higher than what you really made, but I'd say it would give anyone a very good idea of what they would run if all the info was correct and accounted for.



I can sit and play with this thing for hours.. Playing with the optimize feature is fun. Here is the programs optimized cam over your existing. Red/Light Blue are the optimized and the Green/Dark Blue is your current set up. I asked it to keep the idle vacum above 5 as that what it said your existing set up was producing.


Loss of bottom end TQ but quite a bit more up top.

[phipp13]

hey super 73 would you please plug these #s in i'd be verry greatfull 383sbc 5.7 rod
4.030 bore
3.75 stroke
speedpro H-859 CP30
compression 8.96 to 1
dart iron eagle 200 sbc 23 deg
comb 72cc
2.02/1.60
200cc intake vol
75cc ex volgot these #s from web published by
Chevy High Performance Magazine

.200 129/112
.300 182/139
.400 226/166
.500 258/178
.600 255/186

flow in 262cfm@.500 lift/28" from dart
flow ex 175 cfm@.600 lift/28" from dart
Crane cams
http://www.cranecams.com/?show=brows...64&lvl=2&prt=5
wg 1064 grind 300 2-H
in .488 ad dur 300 w 1.5 ratio
ex.510 ad dur 310
HARLAND SHARP 1.6
B&M 144 @ 8 lbs boost
holley 750 cfm dbl pmpr mech sec
hooker 1 3/4 32"x 3" coll
72 swb 3800 lbs w fat bastard behind the wheel. very curious as to these#s i was told by white performance +600 HP +600 TQ. thanks in advance super 73 happy holidays!!!!

[Super73]

Phipp,
I really need more head flow data. Any chance you can give me 3 points of flow?

[phipp13]

i'm on it i'll go to dart for this

[phipp13]

Thats all the info there is on darts website. I've never had them ported or flowed. i'll keep trying though.

[phipp13]

got these #s from web published by
Chevy High Performance Magazine for dart 23 deg 180 -230 cc iron eagle heads

.200 129/112
.300 182/139
.400 226/166
.500 258/178
.600 255/186
i will post these on origional build sheet thanks very much!

[69trk]

Here's some flow numbers super.

intake/exhaust
.100- 66/55
.200-127/105
.300-184/134
.400-234/161
.500-284/183
.600-319/199
.650-331/205
.700-301/216.5

[phipp13]

thanks for offering up some flow #s i apprechiate your help v/t phipp