I agree with Jim on the Aubrey part,and the cams I suggested from Show-Cars are simular.All are modern grinds from Comp Cams,but Aubrey has his custom ground.As to the effency part,I try to suggest one that I wouldnt mind living with,but all of mine are based on the fact that I drive a minimum of 60 miles each way to and from the dragstrip and at the price of fuel today,well........Like most of us,I like a little of "dont mess with me"attitude at idle,but that "attitude" is basicly a mis-fire,which means it's the sound of my money going out the tailpipe unburnt
One thing I've learned is that if I take the time to set it up,my simulator is big help in chosing a cam that,if I'm honest about my desired rpm range needed,both at a cruise,and at full throttle,I can come up with a livable compromise.Every time I've 'plugged in " one of those 'Thumper's"I REALLY lose effency in the 2000-3o00 rpm range where most of your driving is done.Now these suggestions only apply to a street driven combo,that can be bracket-raced succesfully ,properly tuned of course,not someone like "Ishiftem"or BSL409's combinations which are full race.Ronnie Thompson once told me that the cast pistons in these engines dont like running much over 5500 rpm for long rance durability,so I keep that in mind as well.
I could be wrong but I remember being surprised at how well they worked.
Leo
but I was a little surprised that the cams actually worked as well as they do. I'm sure the guys are right about the efficiency at lower rpm's and of course the all important piston to valve clearance.
