solid roller cams???????

[coupe]

I think he meant especially Cammotion. Edgar has a CamMotion grind currently I believe.

[Wickd GT]

Originally Posted by coupe

I think he meant especially Cammotion. Edgar has a CamMotion grind currently I believe.

Mine is a cammotion cam, what I meant not to get is a Cam Innovation, my opinion on this one.


Edgar

[97cobrasvt]

well I believe if I do like Edgar said and get a solid cam with a tight lash it would work great. With the heads still on the car is there anyway to tell the spring pressure or will I need to remove the heads to find out the spring pressure. Thanks Steven

[Blown 5.0]

Originally Posted by coupe

He doesn't need to know the .050...Edgar's just being nosey.

But I will contest his statement about the 112º LSA. The cam pros at CamMotion, FTI, or Camshaft Innovations will set the whole thing up for you. It might be on a 108º LSA and it might be on a 115º LSA. They have the knowhow to get the timing events right.

That cam you have sounds fairly mild for a solid roller. If you're not wanting the adjustment, do the switch to hydraulic roller. Set it and forget it. You can still make 500 or so N/A with that big motor on a hydraulic...maybe more.

Im not contesting anyones statement ,but LSA can be used to dump low end cylinder pressure, to help fight detonation. (which leads to block splitting). This is especally useful on a Blown motor,

[coupe]

Originally Posted by Blown 5.0

...LSA can be used to dump low end cylinder pressure, to help fight detonation. (which leads to block splitting). This is especally useful on a Blown motor,

You mean by tightening up the LSA (to say 110º or 108º) right?...

That's generally true , but assymetrical lobe(s) can give you a different outlook on it. And that becomes a pricey situation.

[Blown 5.0]

Originally Posted by coupe

You mean by tightening up the LSA (to say 110º or 108º) right?...
That's generally true , but assymetrical lobe(s) can give you a different outlook on it. And that becomes a pricey situation.

Yes and no by running a cams specs on almost any kind of software ( desktop dyno,ect) Brake mean effective pressure can be montored, if this pressure will be kept below 300 at all engine speeds, This can be done by LSA, moving timing events, increasing lift, ect. detonation can be kept to a minium.

As far as a pricey situation, how much is your engine worth? To me cam selection is the most important part of any engine. A properly selected cam can and will make a motor run and last. I have checked several top name cams from differnt manufactures, Some of the top name cam grinders will be off up to 30 degrees from one cylinder to the other. ( reckon how much that cylinders controbution would be off ? ) Buy the best cam you can afford, Most cam grinders have two grinds a shelf grind and a race grind, spend the extra money and get the race grind, ( same cam, more percise ground)

[97cobrasvt]

Originally Posted by Wickd GT

I wanted to know what was the lift at .050" to see how high are the lobes and how fast are the ramps, and yes what Coupe said it is pretty mild cam you have there, what you need to know what is the spring pressure. My cam at .050" is .246/256 a bit more aggresive on the exhaust. If you planning going Hyd, then do it right from the get go. First is to get the Hydr link bar roller lifters from Crane, second, get a custom cam from Ed Curtis, Cammotion or other, except Cammotion. Then a set of spring that goes with that Hydr cam springs, so is going to cost you pretty good money to make the change.


Edgar

Do you have a number to reach them. Thanks Steven

[Wickd GT]

Originally Posted by 97cobrasvt

Do you have a number to reach them. Thanks Steven

Here you go:



http://www.cammotion.com/

[coupe]

IIRC, Steven has a nice Eagle or SCAT crank. The cheap cranks are bad about developing dangerous torsional harmonics in high-revving 347's (which can actually break the crank!), but with nice 4340 parts, it shouldn't be a problem. I have yet to see any gear-drives break things. Have you Edgar?

Would a chain drive be sufficient? Absolutely. In fact, I just bought one for my buildup.

[Wickd GT]

Originally Posted by coupe

IIRC, Steven has a nice Eagle or SCAT crank. The cheap cranks are bad about developing dangerous torsional harmonics in high-revving 347's (which can actually break the crank!), but with nice 4340 parts, it shouldn't be a problem. I have yet to see any gear-drives break things. Have you Edgar?

Would a chain drive be sufficient? Absolutely. In fact, I just bought one for my buildup.

Yes I have. These gear drives are not designed to be rev to the moon with nitrous. It puts to much of a vibration in the valve train, snaping rucker studs dropping valves etc... If they were so go, hve you seen any of the Street Outlaws, Renegades etc... used them? No, due to the fact of the vibration it produces in a high reving engine. Plus they sound like a train falling apart going down the road, LOL.

Edgar