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Re: Cams: Thumper vs Voodoo vs?
[Re: Hughes]
#80420
11/05/08 03:05 PM
11/05/08 03:05 PM
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Joined: Jan 2003
Posts: 5,405
Pikes Peak Country
TC@HP2
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,405
Pikes Peak Country
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Quote:
If you are interested in the VooDoo and Thumper cams you should check out our new Hughes Engines Whiplash cams. Ground specifically for the .904" lifter and will shake your eyeballs out. Tons of low end torque and a lot of fun to drive!
how do these compare with your previous offerings?
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Re: Cams: Thumper vs Voodoo vs?
[Re: TC@HP2]
#80421
11/05/08 03:28 PM
11/05/08 03:28 PM
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Joined: Feb 2005
Posts: 2,528
Mansfield, Tx
Jacob Pitt
master
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master
Joined: Feb 2005
Posts: 2,528
Mansfield, Tx
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Ok I built a .020 360 last winter for my Mom's Duster. I used the Voodoo .513 lift ft hydraulic cam for it. Edelbrock Airgap, 10.5/1 compression, pump gas with a 750 holley and TTI headers. Best to date in a all steel full interior 3200lbs is a 7.44 at 90 mph in the 1/8th mile. That was with a 1.602 60'. Previous best with a stock 340 resto cam and less compression, same heads was a 7.92 at 86 mph.
2013 NHRA D4 Stock Champ
#4 in the World IHRA Stock
2x IHRA Div.4 Stock Champ
14x Track Champ
All using a Ultimate Converter Concepts converter. Call Lenny today 704-892-6837
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Re: Cams: Thumper vs Voodoo vs?
[Re: goldmember]
#80425
11/05/08 07:07 PM
11/05/08 07:07 PM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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Quote:
The problems with a hyd flat tappet are even more a problem when the additional weight of a hyd roller lifter is installed. While there are some goood stories of willing to rev hyd roller valvetrains they aren't often speaking of mopar LA or BB applications. Yes you can get carried away with reducing mass of certain parts and even running beehive springs,but at the end of the day you may be disappointed and nearly broke. A common call that cam companies get is can I run a solid roller lifter on my hyd roller cam? Magazines love them but most in the camshaft community don't share the love.For a low RPM street car the situation is a little better. Mushroom cams are pretty neat,I've got one that I'm thinking of swapping in,but most don't want the extra machine work to install one.
That is what I was thinking too, that the hydraulic roller lifters weight alot, and I don't think you can use much higher spring pressures because of the bleed down of the hydraulic lifter?
They may reduce friction, but they also cost $$$.
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Re: Cams: Thumper vs Voodoo vs?
[Re: 451Mopar]
#80426
11/05/08 07:20 PM
11/05/08 07:20 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Ultradynes for Mopars are All for the .904 lifter cause thats what Mopars are stock.The Ultradyne Cam Master is tough to Understand unless you are Educated in it.The also Made .904 designs for other engines to get more area under the curve.Any problems with it Call Gromm Racing Heads in San Jose, ca ask for Bob Gromm This Guy Knows his stuff and has for years.
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Re: Cams: Thumper vs Voodoo vs?
[Re: TC@HP2]
#80430
11/06/08 11:49 PM
11/06/08 11:49 PM
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Joined: Feb 2004
Posts: 4,501
Gainesville,FL
goldmember
master
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master
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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What simulator are you using? There are only a few that seem to get close,most are no better than throwing darts at a catalog.If you want another look,PM me all the info and just for giggles put it through a couple,one works well and the other will be a mess LOL.
Last edited by goldmember; 11/06/08 11:57 PM.
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Re: Cams: Thumper vs Voodoo vs?
[Re: goldmember]
#80431
11/07/08 01:40 AM
11/07/08 01:40 AM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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Quote:
What simulator are you using? There are only a few that seem to get close,most are no better than throwing darts at a catalog.If you want another look,PM me all the info and just for giggles put it through a couple,one works well and the other will be a mess LOL.
What simulator software are you guys using? I also have used several, and currently have the Dynomation 5. It will do full wave sim, but requires a bunch of extra inputs like intake runner length, runner cross section area and taper, and simular info for the exhaust.
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Re: Cams: Thumper vs Voodoo vs?
[Re: TC@HP2]
#80433
11/07/08 11:37 AM
11/07/08 11:37 AM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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I have used pretty much the entire line of Desktop Dyno (various versions), Dyno 2000, Dyno sim pro tools, and the Dynomation 5. I have also used some other sims, and I have several Excel spread sheets I use for figuring compression ratios, cam timming, cranking pressure, and lists of head flow numbers, and such.
I found all of them can be fairly accurate if you input good data. Entering the custom head flow numbers seems to really help the accuracy compared to just choosing one of the default selections.
The Dynomation 5 will do altitude compensation, and allows you to enter ignition timming variables, along with four different combustion chamber design models. Actually, the software is almost overkill for me. The DynoSim ProTools gave me most of the information I wanted, and is about $500 less expensive.
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