SOLID, A medium-lift cam works well in a 396-468 street or bracket race car with 10 to 11:1 C.R. and at least a 10" converter. 3000-6500/300°310° 252°262° / .549".559" /.323".329"
110° Sep/108° Int C/L 20°BTC 52°ABC /
65°BBC 17°ATC 40232
.025"
.027"

I was wondering how tight a person could go with the lash on this cam? it calls for .025/.027 and I've run it as tight as .018 and as loose as .030 and i can tell no difference in performance...could it be lashed at .010? This is my current Lunati Solid cam...10.5-1 comp with 049 heads.

Wow, Robert I'm surprised that there is no difference. Do you mean in ET or in driveability? I certainly notice driveability differences, but no chronicled ET differences.

Must be that seat-o-the-pants dyno??

The answer to your question depends on the actual grind and the take up ramps, I think. Meaning , if they're gentle and you run it too tight, the exhaust valve might not have enough time on the seat to cool well. My understanding, heopefully one of our pros pipes up. Maybe Harold can take his eyes off the bikinis for a while!

Bob, check your mail.

no difference in e.t. at all...

Robert , May I ask a question concerning this cam ?
Do you still have the timing card for this cam ? If so I'm wondering at what lift figure the advertised duration is figured at. The advertised duration seems really long for the duration @ .050.( IF ) it has a really long C/V / clearance ramp kinda like a 30-30 Duntov does then it is possible to move the lash a fair amount and not see much difference in performance.... That may be just how the lobe was designed... Where longevity and easy on parts was as important as performance. I'm not saying thats the case but it is possible.I have never used nor have I known anyone to use this cam so I have no expirence with this cam at all.

Many times when a cam is lashed in various ways it can indicate if the cam is wrong for a given application.If it really likes a much tighter lash then maybe the engine wants a longer cam and visa versa and if no real changes happen that may mean you have real close to the correct cam timing.

As far as going to .010 lash....JMO by I think thats just too tight for something that is suspose to be .025/.027..... You can do it but the valve may spend less time on the seat and not transer enough heat.

no...don't have all the cam info...I had it saved on an old computer and it crashed on me before I had a chance to save any and all the specs on this motor...I've been running this cam for 5 years,played with the lash either way,usually adjust it 2-3 times a year but with no performance difference at all. I am in the process of building a 468 solid roller motor,hoping to run low 11's with it,maybe squeak a high 10 in there. Current motor has served me well,just need a new horse,freshen this one back up for a spare.