| It was originally thought that in order to use a victor and it's CJ port centers on a D0VE cylinder head that the D0VE intake ports must be matched to the CJ port size. NOT true... I have found through bench testing that if the D0VE intake ports are just matched to the victors as delivered runner exits the flow curve is better than if the intake ports are opened to CJ size. Part of the reason for this is the victor's runner geometry. As delivered the runner entry cross sections are 3.5 square inches short and 3.79 square inches long. This works well with the runner exits which are 3.09 square inches. An ideally shaped runner is tapered from plenum entry to runner exit and on through to the intake port minimum cross section at the pushrod pinch. When the runner exit is enlarged to CJ size you end up with a bell mouth or increase in cross section at the flange and this slows velocity. This applies mainly to the D0VE head and not an actual CJ casting with regard to flow loss. |
| Instructions for using the as delivered victor on a D0VE head. |
| Index |
| I made a template to transfer the as delivered victor flange dimensions to a D0VE-C intake flange. The victors runner exits are D0VE sized but on CJ centers so a mismatch is very evident. |
| The flow numbers achieved using this port matching style are better than the victor on a CJ matched D0VE head and are almost as good as a port matched victor on an actual CJ cylinder head |