[Cliff R]

"If you ever run into that cam card I would be interested in the advertised duration. How aggressive was it ?
Had Tim at Bullet specially take some of the aggressiveness out of my roller cam for safety.
Might cost me 10-12 HP but its better than a mangled mess."

"Sadly I lost quite a few cam cards and dyno charts when my last PC Hard Drive took a chit. I had a "mirror" drive installed in the computer and it was supposed to have everything saved on it but I'm computer "stupid" and never once performed or set the computer up to perform the needed operations to make that happen. Well, sadly you just have to pick and choose your career path and for sure electronics HATE me so I stay as far away from them as humanly possible!

The 455 we "lunched" had a long history. I got involved with it back around 1999-2000 when it was topped with stock #48 heads and Comp 292 Magnum cam. In a 3400lb car it was running 12.0's at that time. It's backed by a TH350 and 3.73 12 bolt.

Wanting more power the owner had KRE port the #48's and supply a 260/260 @ .050" flat solid cam for it. That put it solidly into the 10's, but not good enough. Next went on 330cfm Edelbrock heads and roller cam about .650" lift and not overly "aggressive" lobes. That moved it on down to really low 10's, but after a short stint still hot good enough so the last time we "freshened" up the engine it got more cam (very aggressive profile) and 13 runs in BOOM!

The writing was on the wall anyhow as the last time I was in it there was a main cap dowel in the bottom of the pan. Looking back on it and the evolution of the engine and increased power and vehicle performance we simply reached and were exceeding the capabilities of a 1974 455 block....IMHO. As with things self destruct at the top end of the track around 6400rpms difficult to isolate a single cause, or basically what came first, the chicken or the egg? I suspect lifter bore failure or a piston nudged a valve just hard enough to start that snow ball rolling.

Matters not in the end as with those things you basically lift on the intake and carb and throw the rest in the scrap pile!

It was all replaced with a KRE complete 505cid engine package with High-Port heads up near the 750hp mark. That put the car solidly into the 9's at 135-136mph where it still runs at today nearly 20 years later. That engine has only been out once for rod bearings, new valve springs, timing chain and replacing a set of cracked Scorpion roller rockers with Crower Enduro's........