565 hp with smoke control

[Smoker]

Dave Mitchell

Time to settle some things on Dave. I know my truck is way over 450 HP. I have pulled with Dave and I can assure you that he has well over 600 HP. The difference being that his (and mine) HP is for truck pulling and not street racing. We are truck pullers. We are not too worried about lag and low power on bottom. As for camshafts, Dave has been running a custom cut all year and probably last year too. Him and a knowledgable tech have been working on many variations.

 

[Sled Puller]

Joe,

You had better get a new spy!LOL!



BTW, my "Spy Network" has informed me that Dave has had custom cams for street and full comp, 12 and 24 valve, for quite some time.



Scheids is pretty neutral territory, maybe a "Truck triatholon" is in order.



Dyno

Pull

Drag

That would put all the cards on the table!



This would be a good time to unveil the new, twin overhead cam system.

gene

 

[Power Wagon]

Originally posted by Joseph Donnelly

Sickly and I played on the Dynojet at Diesel Dynamics today. We were tired of the whiners who say 12 valves smoke like freight trains when they make power. With the camshaft Lawrence and I designed, "modest" sized Diesel Dynamics injectors, the AFC set pretty tight, and a medium sized turbocharger ol' Sickly produced 565 SAE hp on #2 diesel fuel only. Smoke was so little that Lawrence couldn't believe it was my truck



Take that, you overvalved whiners

Blair, no more Smokasaurus jokes

12 valves rule

Being the old hot-rodder that I am... I know there are what we call "compromises" in every camshaft profile. Bigger lift tends to give you more duration which gives you more overlap, which kills low-end power.



I'm going to guess you did quite a bit in the lift and not a lot in the duration, possibly tweaking the lobe separation angle to keep idle and starting compression pressure up to acceptable levels. This would tend to increase overlap...



With all that said, what does it do to the 1200 to 2000 torque? IF you have more overlap, does it tend to smoke more at the bottom end? Also, with more lift, what's the chances of banging a valve into a rapidly reciprocating slug (piston)?



What kind of HP level do you need to get to before this will provide any benefit?