Your roller lifters are solid right? How do you think the curves would look compared to your same motor with hydraulic roller lifters? The reason I ask is because my 405 is a retro-fit roller motor too, and while I was expecting high numbers...they were not going to be as high as the ones in your graph.

 

Yes it is a solid roller. I have always wondered what power it would produce with the CC Magnum 286HR which is a hydraulic roller with less duration but almost the same lift.

I bet it would produce the same numbers up to 6500RPM, but the dyno operator told me the HP was still climbing at 6500RPM with my solid roller and I think the hydro cam would be done at that RPM

 

You guys shouldn't be comparing hyd roller to solid rollers for performance at all.

The hyd-roller is a maintenance-free deal with no valve lash or "limited" spring life to contend with and really the only two items to "watch" is your oil changes and your tune-ups!

I have many of these SB retro's out since 1999 and not a single issue. No spring changes, no breakage, not a single item to "worry" about!

On a very conservative estimate, I would add about 100 HP or so with a solid-roller setup. On 383's/400's, retro's, we have 500+ HP. On the unit below in the "P.S." we have 600+. I recently delivered a 383 solid-roller pump-gasser with 557 HP. "Brownfield" heads, 2.020"/1.600", were about 40 years old on this one!!

Thanks, Gary in N.Y.

P.S. I'm going to add this here to show the differences are more dramatic with the solid rollers. I have a unit here in a 1972 (?) El Camino, a 406" SB "pump-gasser", that "tips" the scales at 3600#+ with the driver and a tank of 93. It has run most recently at "Lebanon Valley" and has gone through the traps at 124 MPH with a "bad" convertor. Ran 11.00's with needing that convertor updated on the 93. He must go inside this unit at least once a year to "check-it-out", chances are he won't need any hard parts, but he must examine it closely. It will need valve springs somewhat regularly I'm sure. This will be a 10.50 "ride" with the correct convertor. It is also a "streeter"!

 

I agree about the solid rollers, you have to watch the valve train closely and also periodically take the intake off and inspect the lifters

Any comment on the CC Magnum 286HR ( hydraulic roller ) with 230/230 deg duration @ .050" and .560 lift compared to my solid roller with 242/248 deg duration @ .050" and .570/578 lift ?

 

I have a hyd roller block. I go back and forth about using my GM lifters or a set of crane solid roller lifters. I have to buy a cam either way.

I am leaning towards a Hyd Roller as I am making my engineering assumptions less ridiculous.

 

For quicker opening rates and more lift what about 1.6 rockers? What is the down side?