Made my first drive since installing the inner springs today. I don't need a timeslip to tell me the UD cam flat smokes the LS-6/L-78 cam I had in there. Some say you can't tell a .2 or .3 difference in dragstrip times by the seat of your pants (I disagree BTW). Well if that's true the UD/Lunati cam must've picked it up .5 or more 'cause there's no question it has much more power throughout the rpm range. It's advertised as an LS-6 replacement cam and it idles the same. I can't really tell a difference there. But the power difference is there from off idle on up. It has slightly less duration (238 vs 242) @.050 lift and more gross lift (.550 vs .520). Plus it's ground with 112 LSA vs 114 for the LS-6/L-78. No it won't see the dragstrip. My days of waiting in lines all day for 2 or 3 runs are over.

Hey, Von.

That's the little solid cam I want to use in my winter 489 BBC project (pure street use). I was hoping that someone had some experience with it.

Can you list your combo please?

Thanks, Charles

Some say you can't tell a .2 or .3 difference in dragstrip times by the seat of your pants (I disagree BTW). LOL,,,you must have one heck of a hemorrhoid meter there Von....2 tenths of a second,3 tenths of a second??? aint no way you can tell that :rolleyes: What you can tell is if you spin or not,or if its flat in the middle or on the topend, I've made passes that I would swear that were tenths quicker and they were only .05 quicker,like last night,trying to get back in the 11's with drag radials,,ran 12.13,12.11,12.11, then told myself that I had done it and only ran 12.05...there ain't no way graemlins/thumbsup.gif

Robert, we'll just have to agree to disagree. When I was running Stock Elim, a .20 slower run would feel like I was tied to a tree. it happened once when a rocker adjusting nut backed off. Charles, email me. Yours isn't working.

Can't wait to see it run at Chevelle-abration this year. That is, if we do the track outting thing at all. If not, then I'll just have to sover up long enough to drive it! :cool:

I don't know about feeling hp. I supposedly gained 70hp @ 6200 rpm but I used to spin my tires going over sand at 1500rpm at 1/4 throttle. I def. lost a bunch of power pre-2500rpm, so it hard to say..

If I had to ask, I'd say the car felt slower, but if I went to the track, I'd say it would be faster.

I think I made the wrong decision this time, but thats me.

Good news Von. My only critism of the slightly bigger 276/84 is the lope isn't very stealthy. Bit too rumpity-rump for me. Glad to hear you still have something resembling a stock idle and the power of a Brookshire grind.

Originally posted by von:
My days of waiting in lines all day for 2 or 3 runs are over. ..I can relate to that :D
Glad the cam swap worked out graemlins/thumbsup.gif

Gene, Good thing I didn't go any bigger than the 272 on the exhaust side anyway. With it advanced 5 deg I only have .110 exh valve clearance with the Speed Pro forged pistons. They aren't very generous on valve reliefs. I had the intake side flycut .040 in the past and that's plenty safe now.