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Old 10-05-2011, 02:05 PM   #16 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

OK, Mutha Thumpr out, XE274 H or maybe HR and Lunati 268 still in the running. I am now seriously considering a retro roller conversion to accommodate faster ramp speed with less noise. I have fought the noise battle many times with my Harley engine builds. You don't notice it so much on a V-Twin motor though, with the load pipes and noisy finned aluminum cylinders. If I do that, I will get the complete cam, lifter and spring kit. Going to try a gear drive set also, again, for the sound!
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Old 10-05-2011, 03:44 PM   #17 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

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Originally Posted by mtnmotorrider View Post
OK, Mutha Thumpr out, XE274 H or maybe HR and Lunati 268 still in the running. I am now seriously considering a retro roller conversion to accommodate faster ramp speed with less noise. I have fought the noise battle many times with my Harley engine builds. You don't notice it so much on a V-Twin motor though, with the load pipes and noisy finned aluminum cylinders. If I do that, I will get the complete cam, lifter and spring kit. Going to try a gear drive set also, again, for the sound!

gear drives are hard on your cam... they make a lot of 'noise' yes, but that noise is also vibration that comes directly from the pulsing crankshaft... right to your thin, brittle cam... they sound cool, but just fyi, if you drive it (and drive it hard from time to time... and you WILL) there is a larger chance of breaking your cam.

not saying do or don't but just FYI. maybe some other guys here can chime in and give you some experienced advice, I'm just going off what I have heard.
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Old 10-05-2011, 04:42 PM   #18 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

I take it your block is pre-roller cam. If I understand correctly retro-fitting a roller cam might be a bit expensive. However, I know the benefits are probably worth it.

I think you'll be very happy with the XE274HR, I know I am. Good luck!

John
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Old 10-05-2011, 05:30 PM   #19 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

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I am now seriously considering a retro roller conversion to accommodate faster ramp speed with less noise.
Spring for a full size cam with link bar lifters if you don't have a roller block instead of a small base circle cam.
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Old 10-05-2011, 08:48 PM   #20 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

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I have two topics I'd like input on.

First: have any of you run a Lunati Voodoo cam in a small block Windsor street car and how did you like it? My build is a 351w with Windsor Jr. heads, flat tops, 10.2 CR, high raise dual plane manifold, Holly 600 cfm carb, Hooker full length headers, 2500 stall auto, 3.25 gears. Looking for two things out of a cam: aggressive acceleration and a nice lopey, choppy idle. This is a street/show car, not a race car (1970 Mustang).

Second: would there be any real world advantage to running solid vs. hydraulic flat tappet lifters in such an application?

Again, this is a driver and the tall gears must stay for drivability purposes as well as the small vac secondary carb. In this case it's more form over function.

Thanks!
A couple things. I do run a VooDoo in a smaller engine. You need a bigger carb to make more power on your engine. If the idle lopey idle is what you want buy a comp lopey idle cam. If you want to go fast get the Lunati. I have been around this block ten times. If you want to go fast and drive the car forget about the engine first. Get a 4R70W, 4.10 gears, and a good converter. You will spank everyone off the line and pick up at least five miles to the gallon.
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Old 10-06-2011, 07:08 AM   #21 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

Yes, this is a pre-roller block, and yes, if I do go with a roller it will be with the link bar lifters. I have heard before that the small base circle retro cams are thin and whippy. I have not heard before of any problems with running a gear drive as long as it is a good one. The whine in them comes from the gear teeth mesh, not the crank. All Harelys up tp 2000 run gear drive cams as well as a lot of the Twin Cams with after market cams. They are invincable. I would like to hear more on this subject from folks with actual experience, please. As far as replacing my fresh build c4 and Trac Loc rear end gears, ain't gunna happen.
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Old 10-06-2011, 01:01 PM   #22 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

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. I have not heard before of any problems with running a gear drive as long as it is a good one. The whine in them comes from the gear teeth mesh, not the crank. All Harelys up tp 2000 run gear drive cams as well as a lot of the Twin Cams with after market cams. They are invincable. I would like to hear more on this subject from folks with actual experience, please.
Sorry, I was not clear there, I know that the teeth are (or can be cut) to create "maximum noise", but my point was 1) that noise is more vibration, and 2) you loose the slight dampining effect of the timing chain (and puts the cam in 'direct' contact with the crank).

However many 6cly moters use timing gears and run for many hundreds of thousands of miles I suppose it has a lot to do with the brand as you say, but it is something to look out for if you didn't know. I picked up on this subject on 460 ford forum where many experienced engine builders advised me to stay away from gear drives (esp 'dog bone' style gear drives) when I get around to a build of my own

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Old 10-06-2011, 04:44 PM   #23 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

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If the idle lopey idle is what you want buy a comp lopey idle cam. If you want to go fast get the Lunati.
You surely aren't saying all Comp cams are all sound and no performance are you? I assume you're talking about their Thumper series cams? There are some very knowledgable and sucessful engine builders out there that say otherwise. Agreed that they're designed to sound much bigger than they are but they also make good streetable power while they're doing it.

I'm not claiming to be a cam expert but it appears that the Lunati Voodoo cams are single pattern duration, single lift cams which seems to be pretty old school design to me.

As far as gear drives go I ran one for a couple years before it gave up on me. I was told that they never wear out, false! Mine only lasted about 8-10,000 miles and needed to be replaced. I went with a double roller instead. The new engine is a chain as well.

Just my thoughts.

John
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Old 10-06-2011, 05:14 PM   #24 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

Here is the 268 VooDoo cam I have on it's way for my 351W ..
Voodoo Hyd Cam - Ford 351W 302HO 268/276 - Lunati Power

I ran an XE274 that was noisy, I hope Lunadi's got that figured out the XE's from Comp are close to the VooDoo cams
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Old 10-06-2011, 09:27 PM   #25 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

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Here is the 268 VooDoo cam I have on it's way for my 351W ..
Voodoo Hyd Cam - Ford 351W 302HO 268/276 - Lunati Power

I ran an XE274 that was noisy, I hope Lunadi's got that figured out the XE's from Comp are close to the VooDoo cams
If it's quieter, it will be with softer lift rates near the nose, because the Lunati cam actually has faster ramp rates than the Comp. That also makes sense as their recommended spring package is softer as well, in the seat but especially in the rate. They are very similar in many respects, but there's a lot of info 'hiding' in the lobe profile. I like the numbers at first glance, but there is so much the published numbers don't tell you. I may pick one up myself to swap out with the XE270 for giggles. Let me know.

David
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Old 10-07-2011, 12:19 PM   #26 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

Thanks again, for all your thoughts. After listening to several recordings of gear drives, I think I'll stick with the double roller chain I am currently running. Those gear drives are loader then I remembered. As regards cams: I'm still vacillating between the Comp Cams EX274H and the Lunati 268. I've decided to stick with a flat tappet for now due to cost. I only drive this car a couple thou a year, so longevity is not an issue. 393 Clevor; please let us know how you like that Lunati grind once you get 'er runnin!

Last edited by mtnmotorrider; 10-08-2011 at 06:55 AM.
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Old 10-07-2011, 12:44 PM   #27 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

I sure will, most likely have a video of it running... note on timing chains.. I have been using the same chain and gears forever, not sure how many motors they have been in...... I think they are Cloyes still nice and tight too
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Old 10-08-2011, 07:21 PM   #28 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

[QUOTE=65FalconLover;1653099]You surely aren't saying all Comp cams are all sound and no performance are you?

I know comp makes some good stuff and have probably used most of it over the years. I would say many builders do not pick a cam out of a catalog so they could really have anyone grind it. Years ago I got turned off because comp sold 260, 270, 280 cams. The specs looked the same for most engines. I put a smaller Engle cam in my 331 Chev and still beat people with Comp cams in 350's with similar set ups. I also got better mileage. Theirs did idle rougher though. I do understand the appeal of the thumper idle but take a car to the strip and you see what works. My car "feels" faster on the street with a smaller carb. Bigger carb proves it is faster at the strip. There is no one answer.
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Old 10-09-2011, 07:20 AM   #29 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

I think I'm going to try that Lunati. Which grind do you like in you small block? The tech recommended the 31007 but the description for the 61003 sound better suited for my situation.
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Old 10-09-2011, 07:24 AM   #30 (permalink)
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Re: Lunati Voodoo cam? Solid lifters?

the 31007 is a straight pattern cam... do you have after market heads???

Street Strip Hyd Cam - Ford 351W 302HO 275/275 - Lunati Power



I think the 61003 would be good with ported stock heads... it's the one I'm using...

Voodoo Hyd Cam - Ford 351W 302HO 268/276 - Lunati Power
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