[Cliff R]

Perhaps we should stick to posting facts from our own direct testing, rather than confusing everyone with a bunch of nonesense, just my 02.

Fact, we've got ONE, yes, that's ONE decent track run posted from ONE board member using an XE274 camshaft.

Fact, every single car that particular person is associated with, runs WAY faster everyone else doing the same thing. I commend them in the ability to set up their cars for excellent track runs for the combination(s) of parts.

The actual number of folks running mid to high 11's with the XE274 camshaft are rare, if not non-existant.

One of my customers with a near identical car to my own, using just about every single component that I do, aside from 3.73 gearing vs 3.42's/apprx 300lbs lighter, ran an XE274 cam in a 455 with KRE heads, and couldn't get into the 11's. He hit a brick wall at 12.0's.

He changed the cam, and nothing else, and busted DEEP into the 11's. It was a small hydraulic roller but the specs escape me. Really doesn't matter, I've had enough folks call in that were extremely UNHAPPY with that particular cam in the 455 engine, that we have avoided them like the plague.

I've also had two dyno charts sent here, and we had one posted up here a few months back, which all provided nearly the exact same results, WAY off on power and power ending quite early in the RPM range.

I think the topic is going quite well, it would go even better if folks would stick to posting usable/accurate information on the subject, without using my name specifically surrounded by a bunch of crap that is meaningless to the reader, and does nothing but further complicate and already complicated topic.

I haven't even started on the FACT that these cams can and will cause valve train instability due to the excessive seating velocity of the ramps. The last time I brought up this fact, the thread went WAY off track and got canned.

Bottom line from where I'm sitting, NOTHING impressive about that particular cam in a 455 with ported or unported iron heads that I've seen.

I also witnessed a dyno test with the XE284 cam in a 455 using 7K3 heads. Despite the very best tuning efforts, it took all day to get that engine to make 430hp, most pulls were right around 400hp, and it never did make over 500ft lbs torque anyplace. There's a FACT, as we had to wait our turn for the dyno as they pissed around most of the day trying to get that engine to make more power than a 2802 cam would have made in exactly the same application...FWIW......Cliff

PS: My purpose for putting information on this website is to help folks, not "bash" a particular line of parts. When we have information that isn't well accepted from folks who happen to use these particular parts, sorry about your luck....