Crank case & rocker cover ventilation.

[Mettler]

Hey do you guys see any problems with the following?

Directing the crankcase ventilation at the back of the block directly to an oil catch can, and plugging up all but one hole on each rocker cover, running further lines to the catch can from these two holes.

The crankcase can already vent up to the rocker covers through the oil drain holes in the block & heads, and I can't see that enough pressure would build up to require all these additional breather hoses.

I figure running the bare minimum to the catch can and plugging up the rest should be fine. It'll certainly help with reducing the clutter under the manifold.

[John Dixon]

Should be fine. Might be best to look at some sort of evacuator or vac pump if possible to get some sort of vac pulled on the crankcase. Will help keep the volatiles out of the oil (fuel dilution).

[mtcookson]

Many of the domestic V8 guys have seen noticeable power gains from putting a vacuum pump on the crankcase as well.

[ultrapulse]

At a guess I'd say all good, but any serious hp would maybe require good 'ventilation'. I have seen some guys at the drags running them to the collectors for the venturi effect, getting vacuum (mainly)at full noise. However I think most if not all street exhaust systems would not allow for the same suction at this point.