More little known power producing rocker tech.

In this, episode 72 of PowerTec, 10 DV expands on the content of the rocker video episode 36 (rave reviews in the comments section!) What the effect of the rockers are when a ratio change is done can, when you are on the dyno, tell much about your cam event timing (whether it's right or wrong). Watching this video will undoubtedly add to your engine speccing skills to the tune of an easy 20 hp.

[stephenmontez]

I come for the intro but stay for the wisdom

[johnhennery]

Thank you David for another excellent video I feel like I was in the dark ages before I started watching your videos and I believe I was now I know that I will watch for more of your videos before I start my next engen project

[funvic]

Thank you, Mr. Vizard, for all you've done for the automotive enthusiasts. Thank you for sharing your knowledge and experiences with all of us.

[irench]

Top job expanding upon how the rocker ratio effects timing events. I missed the first but I'd hope you began with explaining how the timing events are plotted. The average guy, we call them last line guys. They grab the cam on the bottom because that MUST be the highest performance part. Using a cam meant for the application is far more important. Just as Lingenfelter proved. His work on air flow and applying aeronautic tech was a game changing revelation for many.

[jamesford]

I am working on putting 351 Cleveland head on a stroked Jeep 2.5 4 cylinder and am going to need to spec out a cam for it. I have been learning a lot from all of your videos. Thanks DV

[blakeblake]

This man has the Youtube stamina of a 17 year old!

[exploranator]

This stuff is so up-to-date and relevant.

[jebuster]

I have been looking for this information! Thank you for sharing your wisdom, Mr. Vizard!

[gregorymarch]

You're speaking my favorite language here. (Getting cam/valve gear properly specced to the application) MUCH said in a short time. Very thought provoking. Learned some new things and helped to clarify things you've mentioned before. SUPER JOB!!

[jimkillen]

I always try to watch your videos. Thanks for the advice

[donaldhalls]

Thanks again for your knowledge, all the best to yous and your loved ones

[dadalebreton]

I dont only learn, i learn things i never tought could be done in first place or details i didnt know it would affect the flow, the pulse, the ol nine yards in metal removing in engines components. Such amazing informations.

[VGHCX]

Using illustrations to reference as you speak would be very useful to us new to the hobby.

[bw]

Watching your videos always gives me the feeling of "Why didn't I hear or know this before now to make the engines I've built better". But hey I'll know now if I get around to another one and it's still very interesting content. Thanks D.V. and the crew as well for doing these!

[Robbb]

Thank you David always great information. Can you do a video on choosing a cam for a 4 valve engine if it's any different than a push rod engine 👏🏽🙌🏽

[herbslusher]

Always good and never thought of info for me. Thanks, David

[jarez]

My suggestion is to do more vids on supercharging and more about different fuels like higher octane, low octane, race fuels, E-85, and Methanol.

[jeffrykopis]

I bet nobody under 50 knows who Stroker McGurk was. RIP Tom Medley. 🙏

[gutlass]

I always learn something watching your videos and very much appreciate you sharing your wisdom. I'm familiar enough to know that if you are using terminology different than that with which I am familiar, you have a good reason. Using context, it seems you refer to intake lobe centerline both in relation to the crank (I'm used to Intake Centerline Angle) and in relation to the exhaust lobe (I'm used to Lobe Separation Angle) as Lobe Centerline Angle. Please help me to distinguish to which you are referring in a given conversation. I feel as though I have missed an important piece of information.

[rogerpatton]

I've learn so much in just the few days I've been watching.. genetics.