BBC head advise...Indy? Pro Comp? Eddy Victor?
IMO, going with a std port and not a MW port is a big waste of time. 500 inches needs a port!
Hell I use MW ports on 440's. If you have flattop pistons you'll either have to change the pistons to work with smaller chambers (best way to go from a power stand point)and then the EZ heads will be great.
Or you'll have to run the eddy heads. Edelbrock has redesigned the Victor and I can tell you OOTB it aint very good. It needs porting.
Brian
I agree.
From the factory Chrysler has been stingy on port size. I too see no problem running a Max Wedge port on a 440. You can get a well ported standard head to do satisfactory duty on a street 500" engine, but for maximum efforts, you are always gunna leave something on the table when compared to the larger head.
How did you discover the Victor had been changed? Must have been some test differences you got? Could it have been production tolerences?
Yesterday I spoke with Edelbrock tech. They pulled out the engineering and design sheets and went over them for me. There was proprietary information they couldn't talk about, but according to the engineers, no changes have been made to combustion chambers, port volumes, flows, or anything like that. They made some changes to IPS plugs in the end of the head, rocker stands, valve cover gasket sealing rail, pushrod clearancing and things like that, but nothing that changed the ports.
Edelbrock claims these flows:
.100"..........85
.200".........150
.300".........211
.400".........261
.500".........298
.600".........322
.700".........325
On my bench, the stock Victor flows are:
.100"..........68
.200".........141
.300".........204
.400".........246
.500".........277
.600".........305
.700".........324
.800".........334
If I may ask, how does that compare with what you get?