I was in a discussion about roller cams and a buddy of mine says he knows of a guy who assembled a Y Block engine with a roller cam setup many years ago. Anybody ever heard of such a critter? Possibly Harman & Collins ??? Oldmics
With a lifter bore of a little less than 1/2 inch and not enough block material to go much bigger it would take big bucks.
He may have seen a 'rev kit' as I believe those were available at one time. These were more commonly used on early roller cam set-ups, but occasionally turned up on 'standard' lifters. There's simply no room for a roller lifter in the Y-block architecture.
Y blocks have a mushroom lifter. Nascar used those for years in place of rollers. They allow an agressive cam profile but there is no commercially available roller cam for them.
The only "Y-Block" that I've ever heard of that you could install a roller cam & lifters into would be the '52-'57 Lincoln & the '52-'64 F-800 Ford Commercial(same family of engines & originally came with hydraulic lifters)
Looks like the reliefs cut in the bronze(?) lifter body allow the roller to travel up into the lifter bore and the slots at the top accept a piece of 1/8” flat stock to keep the bronze pieces aligned and stationary. The flat stock would be fastened to the valley to maintain position. BITD Chet Herbert kept lifters in place that way before the days of joined roller lifters. Also the steel pieces holding the rollers must be keyed to slots in the bronze to keep the rollers aligned with the cam lobes. I bet those are one off pieces, somebody was very ingenious and wanted a roller cam pretty badly.
Engine Masters Challenge (EMC), Kaase’s Y-block 709hp @ 6,300rpm with 748 ft/lbs torque @ 5,400rpm. Even the professionals don't use rollers as no one manufactures because they don't fit. Lots of good information here not to mention other Y-Block sites. The lifters install through the cam tunnel and NOT the via the valley. http://jonkaaseracingengines.com/wp-content/uploads/2016/06/MM_July2016_HMMGarage.pdf https://egge.com/media/pdf/StreetThunder_Y-Block.pdf http://www.mustangandfords.com/how-to/engine/1305-y-block-engine-build/ https://www.howardscams.com/product...nical Flat Tappet/lifter_body_diameter/%2E499 https://www.supermotors.net/articles/lfm-issue03-a2-1.php http://www.eatonbalancing.com/2000/03/24/quick-index-for-eaton-balancing-articles/ https://www.hotrod.com/articles/build-reliable-powerful-ford-y-block/ https://www.hotrod.com/articles/dai...acks-hidden-fuel-injection-updated-internals/
[QUOTE="Anybody ever heard of such a critter? Possibly Harman & Collins ???Oldmics[/QUOTE] Yes, H&C. A friend had one in his sprint car. It won the regional championship one year.
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