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yes on all the above. going to 1.6 is supposed to be worth 10-20 HP depending on rest of build. 1.5 to 1.6 adds approx 3 degrees duration at .05 lift, so then check the "intensity" by subtracting the new .05 duration from seat duration. Don't want the result to be smaller than Voodoo/CompXE...

here is photo of chevy roller tip rockers on EQ magnum heads, had to use ford/olds rocker studs (CompCAm part). If your looking for more valve lift this is one way to get it and still keep seat duration shorter for good street manners.

These photos are off an original strip kit instruction sheet.

I have worked as an ASE certified dealership mechanic since the 1970's. At that time the "factory" required a cylinder head retorque at 1000 miles. Since then I have noticed ALL cylinder heads can benefit from a retorque; regardless aluminum or cast iron, and regardless of "permatorque"...

I wish I had, but the block came from a lineup sitting on the floor. I talked with Lunati, They said that they buff all their cam journals to chamfer the oil holes in the journals. Next week I'll compare journal diameter data to Lunatis data to the cam journals and phone Lunati back with the...

I did install the cam and new bearings together. I had a high volume oil pump in the engine at the time and was suprised how quickly the oil pressure dropped to zero each time the engine was shut down. Good comments from the other responses about cam bearing bore diameters. As you say there...

Here is the note I sent to Lunati, have not heard back from them yet. In the second photo the wear on the bearings was concentrated in the lower half of each bearing; basically the lifters were pushing the cam down into the bearings. I have a small block Mopar 360 that had a Lunati H215 cam in...

I sent pics to Edelbrock. They wrote back and said they were not happy with the quality and had me return the heads to them.

All good comments from everyone. I sent email with photos to Edy, will see how they respond. No bling involved, honestly. Moper's dad worked at P&W, I used to work design at Boeing Aircraft. ONe of the unprinted comments some designers made at work include dont fly on a new generation of...

Pictures of the problems is a good idea. As said Summit is good about returns. I'm not sure if they will go thru boxes to find two good ones. I could also get $$ back from Summit, and check around, see if MRL or such has a set or access to good sets, have them prep them. More $$ but at least...

Just received new Edel RPM LA heads assembled from Summit. Boy is the quality control lacking. Exhaust guide locations clear off the formed pad in the roof of the port, so you see the guide all the way down to the port roof itself. Also all the exh ports are offset to the left on BOTH heads vs...