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Thread: Scary results...
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10-14-2007 #1
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Scary results...
So I have never been a real big believer in desktop dyno type engine analyzers... So I randomly got thrown a copy of one such program and built an engine for a 69 Road Runner we have in the shop...
Computer spat out 564hp @ 6000rpm and 549tq @5000rpm...
drum roll.... the actual numbers were....
559hp @ 5900rpm and 555tq @ 5000rpm
I was really impressed with just how accurate this little program was...
Just felt like sharing.
1966 Chevrolet Chevelle 300 Deluxe 350 / 350 auto
1968 Dodge Charger SRT8 6.1L Hemi / 6-speed
1964 Dodge Polara 8-71 Blown 440 / 4-speed
1998 Toyota 4Runner SR5 3.4L / 5-speed
2013 Dodge Challenger R/T 5.7L Hemi / 6-speed
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10-15-2007 #2
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so what all does this entail that it can get pretty accurate results? Do you enter in whats your doing to said engine and displacement and all mods and it comes up with those numbers?
Oh congrats on the awesome numbersChris Smock aka Blazed67
1967 Firebird Convertible- Tough Luck- never ending
2003 VW Jetta Wagon 1.8T- the new DD
2006 Suzuki SV1000R- greatly missed
10-15-2007 #3
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I used it on my 408 engine build.
The prediction was withing a couple percent of the actual numbers. I think it's a pretty good tool for messing with cam specs and such."A ship in port is safe, but that's not what ships are built for."
1968 Track Rat Camaro:
https://www.youtube.com/watch?v=SGHJ5c1yLIo&t=2s
1971 Chevelle Wagon with a few mods:
https://www.youtube.com/watch?v=WBVPR3sRgyU
10-15-2007 #4
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So where can i get one of those programs?
10-15-2007 #5
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I used Dyno 2000 when I built my current big blocks. I thought the program was a little too optimistic, but last Friday I ran both engines on a dyno and D2K was only a few hp/tq numbers high on both engines. However, the power curve was noticably different between the computer program and the actual numbers.
For pre-build estimates, these programs are hard to beat. I'm a believer now.
10-15-2007 #6
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I used DynoSim v.4 and was really impressed.
The programs allow you to really mess around with camshafts. You throw in deck height, chamber size, head flow, displacement, intake manifold type, fuel type, ect... and it spits you out a number.
I thought the number was optomistic but it corrosponded to what showed on the dyno... can't beat it.1966 Chevrolet Chevelle 300 Deluxe 350 / 350 auto
1968 Dodge Charger SRT8 6.1L Hemi / 6-speed
1964 Dodge Polara 8-71 Blown 440 / 4-speed
1998 Toyota 4Runner SR5 3.4L / 5-speed
2013 Dodge Challenger R/T 5.7L Hemi / 6-speed
10-15-2007 #7
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Yea, that's what I used too.
Originally Posted by Rolling_Thunder
Hey, you coming out on Wednesday with Mike to work on Penny? If so I look forward to meeting you."A ship in port is safe, but that's not what ships are built for."
1968 Track Rat Camaro:
https://www.youtube.com/watch?v=SGHJ5c1yLIo&t=2s
1971 Chevelle Wagon with a few mods:
https://www.youtube.com/watch?v=WBVPR3sRgyU
10-15-2007 #8
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Well guys the programs are wrote to estimate airflow, which if you know anything about HP and TQ its all in the air flow.
If you model airflow numbers you are modelling power potential.
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