Desktop Dyno request thread
#162
Racer
- 1974 SBC
bore 4.030
stroke - stock 350
rod length - 5.7"
head link - http://store.summitracing.com/partde...5&autoview=sku
10 1/2 : 1 compression
carb - 670 Holley street avenger
imtake - holley street dominator #300-36
shorty header with 2 1/2" outlet into 3" side pipes
rocker ratio - 1.6:1 aluminum full roller
cam link - http://store.summitracing.com/partde...2&autoview=sku
if you need more infor let me know.
bore 4.030
stroke - stock 350
rod length - 5.7"
head link - http://store.summitracing.com/partde...5&autoview=sku
10 1/2 : 1 compression
carb - 670 Holley street avenger
imtake - holley street dominator #300-36
shorty header with 2 1/2" outlet into 3" side pipes
rocker ratio - 1.6:1 aluminum full roller
cam link - http://store.summitracing.com/partde...2&autoview=sku
if you need more infor let me know.
#163
Racer
Hey Billa, I'm curious about my combo. Heres the info:SBC 383 .030 overbore 3.75 stroke 5.7 rod AFR 195 Eliminator Street heads 9.7Compression RPM Air Gap Holley 4779 750 cfm carb Hooker Super Comp 1 3/4" into 3" collector Comp Cams XS-274-S cam part#12-677-4 1.6 Harlem Sharp Rockers No hurry, whenever you can Thanks
#164
Instructor
Member Since: Jun 2006
Location: central Texas
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DUUUUUUUUUUUUUUUUUUUUUDE!
Betcha didn't think this thing would get so big did ya'...
What an awesome thread. It may take me days to sort through all of this good stuff...
I'd like to get a copy of one of the dyno programs but until I do I'd sure like you to take a shot at mine when you get a chance.
I definately know what the time thing is about...
I have...
Small Block Chevy
Bored .030 - making it 355 CID
10.63 : 1 compression ratio - TRW forged .100 dome .30 over
http://www.dougherbert.com/8620bille...044ac8247faa18
Doug Hebert Soild Roller Cam
- Basic Operating RPM Range: 2,700-6,700
- Intake Duration at 050 inch Lift: 242
- Exhaust Duration at 050 inch Lift: 246
- Advertised Intake Duration: 278
- Advertised Exhaust Duration: 286
- Intake Valve Lift with Factory Rocker Arm Ratio: 0.567 in.
- Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.585 in.
- Lobe Separation (degrees): 112c
1.6:1 Crane aluminum full roller rockers
Trick Flow Aluminum Heads - 64cc
- 195 cc intake and 75 cc exhaust ports
- 2.02 intake and 1.60 exhaust stainless steel valves
- flowed over 250 cfm on the intake
- flowed nearly 190 cfm on the exhaust
Edlebrock Performer RPM Air Gap intake
Holley 4779 - 750cfm DP Carb (I'll actually be running a 4777 - 650cfm DP but I think I'll need more carb).
Hooker Super Comp 1 3/4" JetHot coated Headers
- 2 1/2 exhaust to Flowmaster 40s
4-speed car
If you get a chance, I'd get a kick out of seeing what you come up with.
Thanks,
Dennis
Betcha didn't think this thing would get so big did ya'...
What an awesome thread. It may take me days to sort through all of this good stuff...
I'd like to get a copy of one of the dyno programs but until I do I'd sure like you to take a shot at mine when you get a chance.
I definately know what the time thing is about...
I have...
Small Block Chevy
Bored .030 - making it 355 CID
10.63 : 1 compression ratio - TRW forged .100 dome .30 over
http://www.dougherbert.com/8620bille...044ac8247faa18
Doug Hebert Soild Roller Cam
- Basic Operating RPM Range: 2,700-6,700
- Intake Duration at 050 inch Lift: 242
- Exhaust Duration at 050 inch Lift: 246
- Advertised Intake Duration: 278
- Advertised Exhaust Duration: 286
- Intake Valve Lift with Factory Rocker Arm Ratio: 0.567 in.
- Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.585 in.
- Lobe Separation (degrees): 112c
1.6:1 Crane aluminum full roller rockers
Trick Flow Aluminum Heads - 64cc
- 195 cc intake and 75 cc exhaust ports
- 2.02 intake and 1.60 exhaust stainless steel valves
- flowed over 250 cfm on the intake
- flowed nearly 190 cfm on the exhaust
Edlebrock Performer RPM Air Gap intake
Holley 4779 - 750cfm DP Carb (I'll actually be running a 4777 - 650cfm DP but I think I'll need more carb).
Hooker Super Comp 1 3/4" JetHot coated Headers
- 2 1/2 exhaust to Flowmaster 40s
4-speed car
If you get a chance, I'd get a kick out of seeing what you come up with.
Thanks,
Dennis
#165
Billla,
Thanks for offering to do this. I am in the process of finalizing my build plans and would really appreciate this tool. Would you mind doing two versions, with different heads? I am trying to see the impact of a choice here. Here is my build:
Version 1:
Big Block Chevy
6500-7000 Redline
4.290 Bore
4.25 Stroke
6.385 Rod
491 ci, I believe
10.4:1 CR
3946074 Aluminum Head
Flow at this cam's lift: 307 Int / 187 Exh
295 cc intake port
2.18 / 1.88 valves
Crane 134691 Cam
290/300 Adv. Dur 110 LSA .580/.600 lift
@ .050: 256/266
Here is the cam card:
http://www.cranecams.com/?show=brows...tType=camshaft
Rocker 1.7:1
Headers 2" / 3.5"
3" Dual exhaust with Ultraflow mufflers
RPM Air Gap - Rectangle port
Holley 850 CFM DP
cold air induction
Version 2:
All same, except the head:
Brodix Race Rite - Rect
intake 294 cc
flow: 332/217
valve: 2.25 / 1.88
If it is easy, I would also be interested to see if the AFR 305 is worth the extra time and Money:
AFR 305 - non-CNC
intake 305 cc
flow: 357 / 276
valve: 2.25 / 1.88
I really appreciate your generosity and willingness to share your time and knowlege.
Larry
Thanks for offering to do this. I am in the process of finalizing my build plans and would really appreciate this tool. Would you mind doing two versions, with different heads? I am trying to see the impact of a choice here. Here is my build:
Version 1:
Big Block Chevy
6500-7000 Redline
4.290 Bore
4.25 Stroke
6.385 Rod
491 ci, I believe
10.4:1 CR
3946074 Aluminum Head
Flow at this cam's lift: 307 Int / 187 Exh
295 cc intake port
2.18 / 1.88 valves
Crane 134691 Cam
290/300 Adv. Dur 110 LSA .580/.600 lift
@ .050: 256/266
Here is the cam card:
http://www.cranecams.com/?show=brows...tType=camshaft
Rocker 1.7:1
Headers 2" / 3.5"
3" Dual exhaust with Ultraflow mufflers
RPM Air Gap - Rectangle port
Holley 850 CFM DP
cold air induction
Version 2:
All same, except the head:
Brodix Race Rite - Rect
intake 294 cc
flow: 332/217
valve: 2.25 / 1.88
If it is easy, I would also be interested to see if the AFR 305 is worth the extra time and Money:
AFR 305 - non-CNC
intake 305 cc
flow: 357 / 276
valve: 2.25 / 1.88
I really appreciate your generosity and willingness to share your time and knowlege.
Larry
Last edited by lr172; 01-23-2008 at 12:32 AM.
#166
Instructor
Member Since: Jan 2007
Location: chicago Il
Posts: 179
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dyno for zz383
Billa I was wondering if you could post the data you have for the ZZ383.I just bought it for my 88 vert and I was wondering about gearing and stall speed as well as what the rwhp might be
#167
Instructor
Member Since: Feb 2005
Location: Huntsville AL
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DeskTop Dyno Question
Sorry up front for hijacking the thread (I wasn't sure of a good forum to post to):
Billa,
Kudos to you for the amount of time you are dedicating to helping everyone on the forum.
My questions to you are not related to a DD run, but, rather, info about DD itself. I found this thread while doing a search for DD threads. I want to buy my own software but there are several choices out there. Based on the results you have posted for others, it appears DD is a good compromise between value and absolute engineering accuracy and will be my choice. My questions are:
It seems that good results come only from good input. Is there a community out there for sharing database files for cams, heads, etc?
What are the major limitations of the software? (I.E. doesn't do forced induction well, algorithms unusually skewed to one factor such as head flow or something else)
While addressed to Billa, anyone with engine sim experiences is more welcome to jump in.
BTW, to keep the thread on topic -- requests for DD runs -- I will be happy to move the post to another forum, just suggest which one.
Regards,
Alan
Billa,
Kudos to you for the amount of time you are dedicating to helping everyone on the forum.
My questions to you are not related to a DD run, but, rather, info about DD itself. I found this thread while doing a search for DD threads. I want to buy my own software but there are several choices out there. Based on the results you have posted for others, it appears DD is a good compromise between value and absolute engineering accuracy and will be my choice. My questions are:
It seems that good results come only from good input. Is there a community out there for sharing database files for cams, heads, etc?
What are the major limitations of the software? (I.E. doesn't do forced induction well, algorithms unusually skewed to one factor such as head flow or something else)
While addressed to Billa, anyone with engine sim experiences is more welcome to jump in.
BTW, to keep the thread on topic -- requests for DD runs -- I will be happy to move the post to another forum, just suggest which one.
Regards,
Alan
#168
Burning Brakes
Ran the new motor on a chassis dyno this morning for the first time...
motor has about 1500 miles on it, and it does still feel a bit tight...
BUT after the first couple of runs....
my 475 hp turnkey crate engine only produced 311 rear wheel horses
My tuner is still sorting an off idle hesitation, but that won't improve the peak power. Torque is reasonably flat, so should make for a good street engine... just a bit disappointed with the peak power number. I was hoping for around 350 rwhp.
Here's the actual rear wheel horsepower obtained.
Maybe we calculate our neddies differently in Australia?
This is in full street trim, with mechanical fan, A/C, power steering and alternator belts all attached.
With a custom set of 1.75" Tri-Y headers, full 2.5" twin exhaust system and reverse flow mufflers at rear (X-pipe with Magnaflows caused too much drone)
Last edited by OzzyTom; 03-09-2008 at 05:06 PM. Reason: added dyno graph
#169
Burning Brakes
I am curious as to what this combo would make compared to 80crabvette (first page). I believe he has a bit more cam than I do. I am expecting my combo to run maybe a bit more torque and maybe a little less horsepower. Thanks!
350 SBC bored 30 over (355ci). Stock Rod length and Stroke
Vortec heads 906 casting 1.94/1.50 valves with a 30 degree backcut. Link to Vortec flow rates:
http://www.purplesagetradingpost.com...20Small%20Port
CR: 9.5:1
Holley 4160 Carb 750 CFM. Edelbrock Performer RPM manifold
Hedman 1 5/8ths size full length headers. 2.25” duel exhaust (No H pipe) Through 2.5” glasspack mufflers.
Camshaft is the Crane Powermax 272 Camshaft. Link to cam card is :
http://store.summitracing.com/partde...2&autoview=sku
The rockers are 1.5 ratio roller rockers.
James
350 SBC bored 30 over (355ci). Stock Rod length and Stroke
Vortec heads 906 casting 1.94/1.50 valves with a 30 degree backcut. Link to Vortec flow rates:
http://www.purplesagetradingpost.com...20Small%20Port
CR: 9.5:1
Holley 4160 Carb 750 CFM. Edelbrock Performer RPM manifold
Hedman 1 5/8ths size full length headers. 2.25” duel exhaust (No H pipe) Through 2.5” glasspack mufflers.
Camshaft is the Crane Powermax 272 Camshaft. Link to cam card is :
http://store.summitracing.com/partde...2&autoview=sku
The rockers are 1.5 ratio roller rockers.
James
#170
Instructor
Dd Request
YOU HAVE RUN THIS FOR ME BUT I HAVE UPDATED THE CAM AND WOULD LIKE TO SEE THE CHANGES . THANKS
STOCK L48 BOTTOM
EQ 200 CC HEADS 202 160 64CC
FLOW NUMBERS http://www.lightningcylinderheads.com/flow.html
9.5/1 COMPRESSION
670 STREET AVENGER
PERFORMER EPS DUAL PLANE PORT MATCHED
1 5/8 HEADERS DUEL EX FLOWS
I DECIDED TO GO WITH THIS CAM AND WAS WONDERING IF YOU COULD RE RUN FOR ME
WITH 1.5 ROCKERS. .458 INTAKE
.458 EX
DURATION@.050 LIFT 218 INTAKE, 218 EXHAUST
AD DURATION 284 INTAKE, 284 EX
110 LOBE SEPERATION
LUNATI BRACKET MASTER PART# 00016
STOCK L48 BOTTOM
EQ 200 CC HEADS 202 160 64CC
FLOW NUMBERS http://www.lightningcylinderheads.com/flow.html
9.5/1 COMPRESSION
670 STREET AVENGER
PERFORMER EPS DUAL PLANE PORT MATCHED
1 5/8 HEADERS DUEL EX FLOWS
I DECIDED TO GO WITH THIS CAM AND WAS WONDERING IF YOU COULD RE RUN FOR ME
WITH 1.5 ROCKERS. .458 INTAKE
.458 EX
DURATION@.050 LIFT 218 INTAKE, 218 EXHAUST
AD DURATION 284 INTAKE, 284 EX
110 LOBE SEPERATION
LUNATI BRACKET MASTER PART# 00016
#173
Burning Brakes
Member Since: Nov 2006
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2022 C3 of the Year Finalist - Modified
[QUOTE=OzzyTom;1564289811]Ran the new motor on a chassis dyno this morning for the first time...
motor has about 1500 miles on it, and it does still feel a bit tight...
BUT after the first couple of runs....
my 475 hp turnkey crate engine only produced 311 rear wheel horses
My tuner is still sorting an off idle hesitation, but that won't improve the peak power. Torque is reasonably flat, so should make for a good street engine... just a bit disappointed with the peak power number. I was hoping for around 350 rwhp.
I see in the dyno sheet 462HP max.
The mechanical fan and all the belts accessories/options affect your RWHP.
The RWHP should be 25%-30% less from the fly wheel HP so you are close 325HP.
Avner
motor has about 1500 miles on it, and it does still feel a bit tight...
BUT after the first couple of runs....
my 475 hp turnkey crate engine only produced 311 rear wheel horses
My tuner is still sorting an off idle hesitation, but that won't improve the peak power. Torque is reasonably flat, so should make for a good street engine... just a bit disappointed with the peak power number. I was hoping for around 350 rwhp.
I see in the dyno sheet 462HP max.
The mechanical fan and all the belts accessories/options affect your RWHP.
The RWHP should be 25%-30% less from the fly wheel HP so you are close 325HP.
Avner
#174
Burning Brakes
[QUOTE=avner;1565733857]
Hi avner, I agree that the figure will be lower at the rear wheels, but I was expecting 25% absolute max drop (not >30%), being a manual trans.
I had issues with the Edelbrock carb (AVS 800), and have now fitted a Holley 4150 Street HP.
Solved the problems with hesitation and motor is much more responsive and feels stronger at top end.
I haven't been back on dyno to validate actual results though. I'm hoping the dip at 4800 has been overcome... feels like it on the road.
The custom tri-Y headers (rather than long tube) seem to support the very strong mid range, and may also contribute to the lower peak power than expected using desktop dyno sim.
It's still running a little rich. A bit more tuning and I'm sure it will achieve a few more neddies.
I'm happy with the results for the moment..... for the majority of use, it's a open road cruiser, and it is a lot of fun.
I'll more than likely get itchy fingers when I get it on the track. If I don't pull mid 12's, I'll be looking for some additional stallions.
Might be as simple as fitting electric fans in place of the mechanical fan I have.
Did I mention it sounds awesome...... turn up your volume!
Ran the new motor on a chassis dyno this morning for the first time...
motor has about 1500 miles on it, and it does still feel a bit tight...
BUT after the first couple of runs....
my 475 hp turnkey crate engine only produced 311 rear wheel horses
My tuner is still sorting an off idle hesitation, but that won't improve the peak power. Torque is reasonably flat, so should make for a good street engine... just a bit disappointed with the peak power number. I was hoping for around 350 rwhp.
I see in the dyno sheet 462HP max.
The mechanical fan and all the belts accessories/options affect your RWHP.
The RWHP should be 25%-30% less from the fly wheel HP so you are close 325HP.
Avner
motor has about 1500 miles on it, and it does still feel a bit tight...
BUT after the first couple of runs....
my 475 hp turnkey crate engine only produced 311 rear wheel horses
My tuner is still sorting an off idle hesitation, but that won't improve the peak power. Torque is reasonably flat, so should make for a good street engine... just a bit disappointed with the peak power number. I was hoping for around 350 rwhp.
I see in the dyno sheet 462HP max.
The mechanical fan and all the belts accessories/options affect your RWHP.
The RWHP should be 25%-30% less from the fly wheel HP so you are close 325HP.
Avner
I had issues with the Edelbrock carb (AVS 800), and have now fitted a Holley 4150 Street HP.
Solved the problems with hesitation and motor is much more responsive and feels stronger at top end.
I haven't been back on dyno to validate actual results though. I'm hoping the dip at 4800 has been overcome... feels like it on the road.
The custom tri-Y headers (rather than long tube) seem to support the very strong mid range, and may also contribute to the lower peak power than expected using desktop dyno sim.
It's still running a little rich. A bit more tuning and I'm sure it will achieve a few more neddies.
I'm happy with the results for the moment..... for the majority of use, it's a open road cruiser, and it is a lot of fun.
I'll more than likely get itchy fingers when I get it on the track. If I don't pull mid 12's, I'll be looking for some additional stallions.
Might be as simple as fitting electric fans in place of the mechanical fan I have.
Did I mention it sounds awesome...... turn up your volume!
Last edited by OzzyTom; 02-07-2012 at 06:47 AM.
#175
Burning Brakes
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2022 C3 of the Year Finalist - Modified
Now I notice that you changed the steering wheel to the 'wrong' side,
that nice, I mate a corvette guy from the kangaroo land at Carlisle PA few years ago and if I remember he had 81 corvette and his name was Philip.
I use the long tube headers with 3" chamber exhaust all the way without mufflers this really free up the engine and the music is awesome.
http://www.youtube.com/watch?v=kwh4JXPshfE
Avner
that nice, I mate a corvette guy from the kangaroo land at Carlisle PA few years ago and if I remember he had 81 corvette and his name was Philip.
I use the long tube headers with 3" chamber exhaust all the way without mufflers this really free up the engine and the music is awesome.
http://www.youtube.com/watch?v=kwh4JXPshfE
Avner
#176
Le Mans Master
Thread Starter
Folks, I'm tentatively and carefully opening this back up. I'll do as many as I can, as soon as I can...but please read the 1st post carefully as I'm going to be a complete hard-*** about getting all the information needed up-front AND doing one run/customer.
Last edited by billla; 09-12-2011 at 03:57 AM.
#177
Instructor
Member Since: Mar 2010
Location: Evansville WI
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If you don't mind:
Stock '73 L-48 bottom end
Stock Vortec heads(906 casting)
9.5:1 compression
PP Cyclone intake(eqivalent to Edelbrock performer 2116, dual plane low rise)
Stock 750 CFM Qjet
1 7/8" primary side pipes w/ straight through mufflers
Summit 1103 cam, see cam card here
Thanks
Stock '73 L-48 bottom end
Stock Vortec heads(906 casting)
9.5:1 compression
PP Cyclone intake(eqivalent to Edelbrock performer 2116, dual plane low rise)
Stock 750 CFM Qjet
1 7/8" primary side pipes w/ straight through mufflers
Summit 1103 cam, see cam card here
Thanks
#178
Advanced
Member Since: Jun 2008
Location: Murphy Texas
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Billa, here is my combo
SBC 385, 4.040 3.75 5.7 rod
Enginequest Vortec heads 1.94 1.5
flow #'s
lift intake / exhaust
.100 87 / 70
.200 160 / 117
.300 217 / 143
.400 259 / 165
.500 277 / 171
.600 286 / 174
comp ratio 10.0
Edelbrock performer RPM Qj 7104
750 cfm Qj
Hedman Elite 1 5/8 headers with dyna flow mufflers, no cats
cam hyd roller 272/276 @ seat 224/228 @ .50
lc 110, intake c/l 107, exhaust c/l 113
int open 5* btdc, ic 39* abdc, eo 47* bbdc, ec 1* atdc @ .50
lift .544 with 1.6 rockers
Thanks in advance,
Randy
SBC 385, 4.040 3.75 5.7 rod
Enginequest Vortec heads 1.94 1.5
flow #'s
lift intake / exhaust
.100 87 / 70
.200 160 / 117
.300 217 / 143
.400 259 / 165
.500 277 / 171
.600 286 / 174
comp ratio 10.0
Edelbrock performer RPM Qj 7104
750 cfm Qj
Hedman Elite 1 5/8 headers with dyna flow mufflers, no cats
cam hyd roller 272/276 @ seat 224/228 @ .50
lc 110, intake c/l 107, exhaust c/l 113
int open 5* btdc, ic 39* abdc, eo 47* bbdc, ec 1* atdc @ .50
lift .544 with 1.6 rockers
Thanks in advance,
Randy
Last edited by rham; 10-20-2011 at 07:27 PM. Reason: typo
#179
Racer
Member Since: Jan 2010
Location: Christchurch Canterbury
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Hi Billa,
It would be fantastic if you could run the following
BBC 427 30 thou over bored, 3.76 stroke, 6.135 rods
Brodix race rite heads, rectangle port, 119 chamber
#RR-bb-R 294cc no cnc
Valve Size 0.200 0.300 0.400 0.500 0.600 0.650 0.700
RR BB-R 2.250 Intake 160 226 276 314 337 341 342
1.880 Exhaust 116 145 172 196 217 230 236
10.66 comp ratio ( TRW forged dome pistons)
http://www.brodix.com/heads/raceritebb.php
Isky Z33 solid cam
http://iskycams.com/timingchart.php?..._number=396233.
GM low rise dual plane manifold #casting no gm 3963569
Holley 850 D/P
2 1/8 primary side pipes
Cheers Richie
It would be fantastic if you could run the following
BBC 427 30 thou over bored, 3.76 stroke, 6.135 rods
Brodix race rite heads, rectangle port, 119 chamber
#RR-bb-R 294cc no cnc
Valve Size 0.200 0.300 0.400 0.500 0.600 0.650 0.700
RR BB-R 2.250 Intake 160 226 276 314 337 341 342
1.880 Exhaust 116 145 172 196 217 230 236
10.66 comp ratio ( TRW forged dome pistons)
http://www.brodix.com/heads/raceritebb.php
Isky Z33 solid cam
http://iskycams.com/timingchart.php?..._number=396233.
GM low rise dual plane manifold #casting no gm 3963569
Holley 850 D/P
2 1/8 primary side pipes
Cheers Richie
Last edited by richiev88; 09-22-2011 at 04:12 AM. Reason: add
#180
Burning Brakes
Billla, If you have time can you run my numbers for me?
SBC L81
Bore 4.030 Stroke 3.48 Rods 5.7
487X heads 1.94 intake 1.5 exh. 74cc chamber
Piston compression hth .040 .015 head gasket compressed
Flat Top 4 valve relief -6cc pistons
Weiand 8000 Medium Rise intake
Stock QJet
Shorty Headers 1.5 primary tubes
Cam Melling MTC1 1.6 rockers
http://www.mellingselectperformance....haft-specs.pdf
Thanks Billla.....Tim
SBC L81
Bore 4.030 Stroke 3.48 Rods 5.7
487X heads 1.94 intake 1.5 exh. 74cc chamber
Piston compression hth .040 .015 head gasket compressed
Flat Top 4 valve relief -6cc pistons
Weiand 8000 Medium Rise intake
Stock QJet
Shorty Headers 1.5 primary tubes
Cam Melling MTC1 1.6 rockers
http://www.mellingselectperformance....haft-specs.pdf
Thanks Billla.....Tim
Last edited by Tim81; 09-28-2011 at 01:03 PM.