<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: old5.0</div><div class="ubbcode-body">
Look at this way. If you call Comp, for example, and order a custom grind, they'll be happy to sell it to you, but it's still based on lobe profiles already in their inventory. They may be willing to tweek the duration here or the lift there, but it isn't a true "custom" grind. It may be an improvement over an OTS cam, but you're still leaving power on the table. And it may genuinely not be much of an improvement over the factory 143 cam. A true, from the ground up custom is a whole different animal. I dunno, I'd like to see what an otherwise stock 396, or 427, could do with a true custom designed around the entire car. </div></div>
Yeah, we're talking about the same thing...I had a place on the east coast recently cam doctor and log one of our blueprint camshafts, and we had this very conversation. Being the good salesman that he is he of course told me he could do a cam for me [just shy of a grand for dual lobe design + blank] and pick up a little power, and he's probably right...but he was quick to admit that the stock 143 camshaft was a pretty good piece for what we do. I doubt the gain would be some mind numbing amount, because the constraints of a stock engine and it's parts [that's what this discussion was in reference to] are pretty tight. Limited exhaust flow versus headers, limited ramp velocity of solid cam, limited induction from dual plane + 780 vacuum carb, etc, etc. On a full blown race engine where parts can be taylored to fit, then it's a different story, of course.
And I will say this: by simply adding some compression and pulling the retarding the camshaft 6 degrees, the stock 143 will peak higher and hang onto power a lotbetter than most would think... [img]<<GRAEMLIN_URL>>/wink.gif[/img]
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: olredalert</div><div class="ubbcode-body">------Big thumbs up on the deck height variations, Rob. Theres a reason that so many chevy engines have been decked and it wasnt for higher than stock, as advertised, compression. Racers were just trying to get all the compression they were legally allowed to run. Bob H told me one time that when they checked the deck height on Red Alerts original LS6 engine that it was off substantially. Actually, he gave me a figure, but that #s gone. My old memory just isnt that good.......Bill S </div></div>
Most folks would be surprised at just how much diffeerrence there is from front to back on each bank! [img]<<GRAEMLIN_URL>>/sick.gif[/img]