Cam Suggestions

I am wondering if they may have put it in just willy nilly and there was no cam timing at all. That cam doesn't have enough duration at 050 to destroy the low end torque.
If they did something strange with the cam timing, like retarding it 8° - 10°, that would explain
the NO low end torque.
I have been doing some guessing with my DD2000, to destroy it like Dorian said, I am seeing that cam was probably 45 degrees out of phase.
 
Ya know Dorian, I am still thinking there is just something not right, I would pull the heads off and take a look at the pistons. I am wondering if the said CR is correct?
 
Lunati (the guy there was much more willing to chat)
Voodoo 20120711
https://www.lunatipower.com/voodoo-retro-fit-hydraulic-roller-cam-chevrolet-small-block-270-278.html
Duration @ .050 (Int/Exh): 219/227;
Gross Valve Lift (Int/Exh): .515/.530;
LSA/ICL: 112/106; Valve Lash (Int/Exh)

What do you guys think of this Lunati cam. I do have a reason for liking it... but I’ll go into that later.
If I could just get the valve event timing numbers or cam card and I could run a simulation with
Dynomation. Since you have the flow numbers for the heads everything else could be estimated
and still be pretty close.
 
You are definitely right about Lunati, I have a hell of time finding there's posted somewhere. But
Crower has it on their homepage.

upload_2021-2-3_18-15-6.png
 
Linked below, youll see just some very loosely related bit of info concerning a hydraulic roller cam for street performance use in a 383-406 SBC, remember I built my corvettes engine to perform well as a daily driven transportation engine with brisk performance, and I have had at more than one time installed much more radical cams that DID produce better PEAK power, than the current cam, but the best COMPROMISE was the CRANE 119661 (in my opinion)
keep in mind the cam alone is not going to be the only factor, your displacement, port flow rates, intake design, injector flow rates and or carb cfm and how its adjusted and fuel pressure all matter, and certainly the headers and any restriction to exhaust flow rates, ignition advance curve, drive train gearing all contribute to your results (or lack of results)
I found that the crane 119661 hydraulic roller cam, EITHER TPI or STEALTHRAM , 32LB, 36lb 0r 42 lb injectors (YEAH YOU NEED TO KNOW HOW TOO TUNE THE COMBO) (and yes I've used all three size injectors)and 3200 rpm stall converter ETC. all work reasonably well.
keep in mind I was not looking to win races, as much as to have impressive performance yet, still have a corvette I could jump into and drive to atlanta or denver if I decided to do so.
I shift at about 6000 rpm if racing , the trans shifts at about 3700 rpm if you drive at about 1/3 throttle

crane119661.png


my383com.jpg

my current corvettes 383 combo | Grumpys Performance Garage

http://garage.grumpysperformance.co...h-camshaft-to-use-on-383-c4.15727/#post-94108
 
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I am wondering if they may have put it in just willy nilly and there was no cam timing at all. That cam doesn't have enough duration at 050 to destroy the low end torque.

I have been doing some guessing with my DD2000, to destroy it like Dorian said, I am seeing that cam was probably 45 degrees out of phase.

45 degrees out of phase ? How does one do that ?
 
As always the tough bit is being overseas. The Lunati cam was unavailable for shipping overseas.

I settled for one of our first choices
https://www.summitracing.com/parts/CCA-12-422-8


Duration at 050 inch Lift:218 int./224 exh.
Valve Lift with Factory Rocker Arm Ratio:0.495 int./0.502 exh.
Lobe Separation (degrees):110
 
45 degrees out of phase ? How does one do that ?
I don’t know Dorian, that’s why I say that cam is far more radical, with the looks of the engine and how well it seems to be built, the duration has to be more like in the 240s or 250s at 050.
 
Very strange, indeed. I am really curious to see how the cam swap will change things. Maybe even get rid of that pesky vibration :D.

I checked the Crower cams - same issue as Lunati. Unclear when they can ship to Belgium.
 
Is any of the cams on your list carried by Summit or Competition Products or some of the many other mail order parts houses
 
The Comp Cam one that we originally looked at and was super close to Grumpy's specs was available on Summit. Shipping is $190. I have to keep costs down by ordering from one source - I have found Summit to be the most reliable, widest selection and most user friendly. Everything was ordered (including a damper puller and installer and a new oil pan cuz I got medieval on the old one - it was seriously stuck on there.) It should all be here by Monday 15.
 
so the cam is decided then the Lunati are you going to pull the heads to check the pistons because on reading all of this there is something missing
 
I don't think you can go wrong with Summit I have never had a problem with them as far as if there was an issue it got fixed with a phone call and no BS
 
I like both of those cams, very similar in duration and lift, maybe a few hundred rpm difference in their operating range.
 
No, neither of those cams are the one I purchased for the TBucket. I bought the 00471 cam
shown below. It idles at 850 rpm.

Crower00471CamCard01.jpg
 
Okay, sorry wrong number, I thought the numbers seemed off a little bit. I knew the lift numbers were closer to mine, mine are .563 on both valves, and now I see I was wrong, yours are .563 and .567-8.
 
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