Sorry another heads question
What is the difference between small block edelbrock perfomer heads vs edelbrock rpm heads. I can't seem to find a comparision of the 2. I'm considering picking up a set of performers for $400 locally. I want a head good for 6-6.5k Rpm's and curious if I shoulld pass

Look here:

http://users.erols.com/srweiss/tablehdc.htm#Chevy

POWER PACKAGE LEVELS________Edelbrock has Defined Five Levels of Performance
_____________________Performer______Torker II______Preformer RPM__Victor Jr._______Victor
Minimum Compression Ratio_8.5:1___________9.5:1_________9.5:1________--_12.5:1_________15:1
Cylinder Head___________Performer or stock_(A)__________(A)___________(B)____________(C )
Camshaft Hydraulic_______Hydraulic_________Hydraulic_____Hy draulic_____Mechanical/Roller_Mechanical/Roller
Intake (duration @ .050)___200°-230°______220°-230°_____230°-240_____250°+__________270°+
Exhaust (duration @ .050)__210°-240°______230°-240°_____240°-250°____260°+__________276°+
Valve Lift (typ. small-block) 0.400" 0.450"____0.450" 0.500"__0.500"-0.550"__0.600"-0.650"____0.650"+
Operating Band (rpm)_____Idle-5500_______2500-6500____1500-6500_____3500-7500_____4500-8500+
Manifold Type___________2 Plane, Low____1 Plane, Low__2 Plane, Hi-Rise_1 Plane, Hi-Rise__1 Plane, Hi-Rise
Volumetric Efficiency______75-90%__________90-100%_____95-105% _____105-115%_______110-122%
Peak Torque (rpm)_______3800___________4500 ________4500_________5300___________6300
Peak HP (rpm)___________5200__________6000_________6000___ ______7000___________8000+
Pkg. Goal (hp/Cu. In.)_____0.7-0.9_________0.8-1.1_______0.9-1.3_______1.1-1.6_________1.6-2.0

(A) Performer RPM Heads (B) Victor Jr. Heads (C) CNC Victor heads
Low - Standard carburetor mounting height; Hi-Rise indicates that hood clearance could be a problem

Reprinted from the 2004 Edelbrock catalog without permission so copy this down and deny you ever saw it.

Larger Dave

The performers are "stock replacement" heads, don't bother, get the RPM's!

Man, i love my RPM heads, the best $1000 i ever spent.
Grab a set you wont regret it!
Joe

If I remember correctly, the only real difference between the performer and performer rpm head is that the performer has passages for a heat crossover, and the rpm does not.

If I remember correctly, the only real difference between the performer and performer rpm head is that the performer has passages for a heat crossover, and the rpm does not.
That's what I remember as well. Identical ecxept for drilling the heat riser ports.