I fail to see where youre going to get enough torque with a late horsepower cam and a 3.08 rear end that you will have decent power from the line. This may just be me.

Im just not inspired by the knowledge of anyone who says a cam is better because it has more lobes. flat pistons help push fire better. and other such things.

neither I nor anyone else here seems to have any idea what an RV1 cam is. or a stage one.

google doesnt know what an RV1 cam is. the only stage one cams I can find any info about on google are for motorcycles.

whe we talk about cams we use the industry standard descriptor like "comp cams magnum 270H"

you can goto comp cams website and find exact specs for this cam. magnum is the product line, 270 is the advertised duration (aka seat to seat duration) H means hydraulic lifters.

the important characteristics of a cam are lobe lift for intake and exhaust, seat to seat duration for I and E, .050 duration for I and E, and cam lobe center angle.

if youre building this for speed.. why arent you converting this to a 200r4 or 700r4 from bowtieoverdrives?

|UPDATED|10/31/2004 2:02:20 AM (AZT)|/UPDATED|

I think it is time to explain myself. You all should know this but I should show that I know it too. There are 8 cylinders in a V8 motor, four on each side. Inside each cylinder is a piston. Every piston is in a different position for timing purposes for one thing. When the gas flows into a cylinder, the distributor sends electric current to the plug causing a spark, as you know gas, and electric current don't mix, causing a combustion of fire. Stock pistons are slanted on the corners causing a smaller area on top to be hit by the fire. A flat top piston goes across the cylinder so when the fire hits, hit covers the whole area forcing the piston down faster, and faster and faster, the whole time you are driving the car; this keep happening in each cylinder, thus you have the wonders of a combustion engine.... Now, as for the cam....

Lift: Vlave-454 Exahust-454 lobe separation 110 degrees
Duration: intake/exhaust @ 268
Brand: comp cam

Pistons:
Brand: KB Performance flat top http://www.kb-silvolite.com/

|UPDATED|11/2/2004 3:41:56 PM (AZT)|/UPDATED|

So.... I guess no one knew this?

Can you tell me about jet engines?
Sarge

I guess you do not know this. Pistons surface area for the combustion does not effect its performance. Although the shape of the top can be used to effect the quench or squish of the air/fuel mixure. But most engine designers use the cylinder head to effect this, hence you see the terms: Hemi, Fastburn, vortech, Wedge.

Can you explain the four cycles your four stroke engine does, louis? This is essential in understanding your camshaft. If you can then I'll explain how you cam effects it, later. If not I'll be happy to explain the 4 cycles first.

Let me do explain to you what the flat top piston is really used to effect: compression ratio. The compression ratio is how much volume of air is pulled or pushed(supercharging) into the cylinder and then compressed into a much smaller volume. This the Displacement Volume (Dv) is how much the volume is at BDC or bottom dead center of the piston stroke or swing on the crankshaft. The Clearance Volume (Cv) is the small volume the air is compressed into. The calculation goes like this: (Dv+Cv)/Cv so if you got a 400cid small block with a 11 to 1 compression ratio to find the clearance volume you do this: (400/8)/(11.0-1)=5.0"^3 or converted to cc'c its about 82cc. To change your compression on this engine you need to add or subtract cc's. You do this by making you combustion chamber bigger or smaller or changing the pistons clearance height or even change thickness of your head gasket. Hence you got flat top pistons rather than your stock dished ones.

Louis, no one knew this??? you can't be serious.
For some on this site, that's the correct level of knowledge, and that's fine. They love Vettes also.

But the group you have been discussing this with regards the info you presented as kindergarden class to college grads.

Please don't think I'm being insulting. That is not my intent. But you have much to learn grasshopper. That's okay, well help. The fact is your answers do not make sense to our questions due to your lack knowledge, not ours. So when we ask questions, do the homework and get back to us. Then we can help. And we want to help. After all, we like young folks getting into our hobby, and it's creating a better Vette. Always a good thing.

kstyer said: Louis, no one knew this??? you can't be serious. For some on this site, that's the correct level of knowledge, and that's fine. They love Vettes also. But the group you have been discussing this with regards the info you presented as kindergarden class to college grads. Please don't think I'm being insulting. That is not my intent. But you have much to learn grasshopper. That's okay, well help. The fact is your answers do not make sense to our questions due to your lack knowledge, not ours. So when we ask questions, do the homework and get back to us. Then we can help. And we want to help. After all, we like young folks getting into our hobby, and it's creating a better Vette. Always a good thing.

well said...

now that I have your cam info...

which is a pretty vanilla comp cams 268 I am going to run your info through the simulator for you. so that you can see real info instead of guestimations.

Thank you Ken. And the results of the desk top dyno will be interesting, and helpful for Louis. Thank you too Ben.

|UPDATED|11/3/2004 12:30:42 PM (AZT)|/UPDATED|

Since this is your cam, you still might want to look at swapping your rear diff gears out for a 3.55 ratio. Make sure you don't already have it though, cause you could have.