add REAR PCV in Carb Spacer?

[Gary Bohannon]

I use a 4 hole phenaulic spacer and want to know if adding a REAR pcv hose inlet tube will affect fuel distrubtion?
I don't like the long wraparound hose to the front.

Years ago I used a Chrysler pcv with L shaped neck and straight hose into the rear of a modified aluminum spacer. Don't know if that was a bad idea or not.

.

[SteeveeDee]

Can't say for sure, but all those GM engineers lost sleep designing all the details for their cars. And the PCV valve is plumbed into the primaries. Now, if you have a lot of blow-by, it'll change your mixture. But that will be true whether you put the thing in the front or the back. I guess it wouldn't make too much difference, really, if, underneath, it all connects to the same place, vacuum-level wise.

[doc]

wont make any difference at all , Steve,,,,,,ford put the port in the back of the spacer, Gm put them in the front,,,, but if you think about it, the passages go down and are connected together in the manifold....just make sure that the port feeds both sides of the manifold the same amount.....the amount going to the each side needs to be the same with a dual plane manifold.....

[LARRY70GS]

Lot's of guys have done that because the HP Holleys don't have a nipple for the PCV.

[Johnny Angel]

Mine is tapped into the back of my older SP-1, below the carb...no issues.

John

[online170]

It should be fine. JUst dont plumb it to a single cylinder because it can lean that one cylinder out.

I burned my no.8 cylinder on an SBC by sending two PCV's to it rather than the brake booster. Alot of the chevy manifolds have the vacuum port on no.8.

When you plumb it to a common point in the plenum, you are affecting the entire mixture and can adjust for it.