It's hard to say because not many engines with Edelbrock victor heads have been built/dyno'd/raced. I'm hoping it will make over 650hp with a 4150 carb on pump gas. I'd like to put it in the 9's on DOT tires.
If I were to do this again I'd probably move right to a paired rocker arm setup ( i.e. T&D or Jesel ) due to the problems with the geometry at a 2.00" installed valve spring height which is needed for this kind of lift. Even Dave Hughes told me to run a smaller cam because of these issues. It seemed really dopey to have these heads that supposedly flow 380CFM @.700 lift and not be able to put a cam in that has enough lift to take advantage of the flow. That was when I started talking to
http://www.b3racingengines.com/ , who at that point was the only person to listen to me.
Using his offset rocker shaft spacers fixed my geometry woes and also helped the rocker to retainer clearance issues that arose when using a +.050 valve lock and retainer (which all measure different BTW) to get a 2" installed height. At that point, once again, everybody I talked to said to find a way to make it work with 1.950" installed height but we could not find an endurance valve spring with spring pressures that would work (240-260 seat, 720-760 @ full lift). Based on what I read from Hughes Engines web site these heads could use a 1.625" spring and that's what we were shooting for. I ended up using a 1.600" diameter Isky 9999-RAD tool room spring in the end.
I also ordered about $300 in retainers and valve locks from Manley and Comp to figure out something that would get me the installed height I needed. If anyone ever wants to rent it with a deposit for mocking up an engine it's here waiting. Anyway, long story short if I were doing it again I'd probably buy Indy wedge heads (NOT directly from Indy) and send them somewhere (NOT Indy) to be ported and again set up for a paired ($$$) rocker system.
Essentially, this is what I learned:
-The cylinder head manufacturer knows nothing beyond the parts that they sell. I.E. Edelbrock never even heard of Manley or Isky.
-The people that port the heads know nothing of the head's installed valve spring height, rocker geometry or rocker to retainer clearance past the point where they ran into trouble and stopped working. If I wanted to run a .650 lift cam I'd have chosen standard port Edelbrock RPM"s. Also, when you try to figure it out and want to order a bunch of single valve locks and retainers they act like it's a Federal case. Dave Hughes, I'm talking to you, not that you care.
-The people that make the rocker arms know nothing of the heads, target installed height, etc.
-The people that make the valve springs seem to know nothing of valve locks, valves and spring retainers. PSI did try to help me out.
I'm on my third engine shop and have about 30 catalogs in paper and PDF that are beat to death from trying to get this all figures out. You are better off memorizing the catalogs, taking lots of notes and be prepared to speak with a representative from (pick a company) that doesn't seem to know anything about cars at all.
If we all went to work everyday and said "well, it won't work" and gave up this thing in front of me would be a stone tablet. That's my metaphor for why Mopars are not competitive in heads up racing (in most cases).
/rant off
ps I still actually like this hobby regardless of all the above BS we went through with this project lol.