These are on track to be relatively small, very fast, and efficient ports. At this time the port opening will fit within the casting of the Victor intake with minimal to no welding.
On these being a relatively simple bolt on replacement for Performer RPM heads, I have not investigated:
1. Valve length, stud and pushrod to allow straight "Pontiac" rockers to fit/work on the 11 degree head. Moving valve angle three degrees affects a number of things. The 12.6 degree head may also use another different rocker.
2. How the valve layout in these heads affects pushrod locations/angles when using a straight rocker. Will require machining pushrod holes. In other words the lifter centers are not the same as the valve/stud centers.
3. Guideplate requirements (…These deserve a set of shaft rockers)
4. Valve reliefs in pistons…but they will be at different angles/locations. Edelbrock has posted the valve locations on their site but be careful as the exhaust “Y” dimension is highly suspect. Looks like they missed the decimal.
Maybe the smart guys at Edelbrock have thought thru these things and these turn out to be more of a bolt on deal with minimal parts change but from my seat these are appropriately named.
Gotta continue grinding…
|