Planing on getting the Dove Roller Rockers. Talked with them last week. They apparently have 3 different rocker arms. Right offset, left offser, and no ofset. Need to know what combination of these I will need with the Mummert heads and also I need special pushrods. I have the Ford heavy duty welded tublar pushrods now.

There have been no problems with fitment of the Dove or Harland Sharp roller rocker arm assemblies under the stock or Thunderbird valve covers to date.

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One more question. Is drilling the holes in the block and heads for cooling between the middle cylinders advisable with the aluminium heads?

I’m going out of my way to plug the holes in the blocks when they are present. On my end, no steam hole venting is required with standard height radiators.

Here are links to a couple of other threads on the subject.

 

http://forums.y-blocksforever.com/Topic18743.aspx

http://forums.y-blocksforever.com/Topic47206.aspx

Performing a search will bring up more on the topic.

Lorena, Texas (South of Waco)

For my .02 cents worth the spacers are a lot of trouble getting the side clearance required between them. Then if you take the assembly off and put them back on you have to fiddle around as you bolt them back down to get the side clearance right again. More HP with springs and no shimming sounds like a no brainer to me.

  Vic Correnti

Planing on going with the springs. Hope to call Dove tomorrow and order them. When I talked to them a week or two back they were out of stock but planed to have them soon. As always, great information here. Thanks to Ted and everyone else. Now if I can just figure out the piston rings-----