Block venting

[redline]

Bought Mopar Performance valve covers and installed a breather cap on one cover vented to atmosphere. Do I still need to install a pcv valve on cover and run to carb ? I have duel carbs do I tee them together or plug vac ports on one carb ?

 

[70rr-brian]

You could go PCV on one of the carbs or use another breather cap and go full atmospheric venting. Up to you really.

Have you put a gauge on it to see how much vacuum you have at idle? If its really low you might just want to go atmo vs pcv.

Downside to full atmo venting is you will always smell oil from the misting in the engine compartment and it will require a semi-regular engine cleaning/wipe down from the misting.

 

[Cranky]

What is the car used for mainly?

 

[redline]

Street driveing , car shows, But will see strip occasionally. 11-1 comp, 2500 stall converter

 

[Cranky]

Headers? Using a pan evac system to the collectors may work if your rpm is up enough. Vacuum with that system is usually low at low rpm but works decently at higher rpm....

 

[Meep-Meep]

For a street car I'd run PCV for sure. If the carbs are set up with a progressive linkage like a HEMI then hook the PCV to the primary carb. If both are tied together then a tee might be the best approach to keep things balanced.

 

[redline]

Thanks, I will use pcv valve, will try to hook up to primary carb but its tight, Eldelbrock said to plug one carb and use other,