1979 Z28 Build
#44
#46
The Street Avenger series use vacuum secondaries. Unless you're building a all out race engine that you want to also drive on the street you'll want vacuum secondaries. On the average hotrod engine mechanical secondaries will cause a bog if you mash the throttle in a low vacuum condition.
With vacuum secondaries the engine reaches peak vacuum and brings in the secondaries as the vacuum optimizes. Much more low end power, and better throttle response for street vehicles.
With vacuum secondaries the engine reaches peak vacuum and brings in the secondaries as the vacuum optimizes. Much more low end power, and better throttle response for street vehicles.
#48
Hey, you got a nice little small block there. But I have just one question. Why spend all that money and the cheap out on the timing chain? Its like you have all these nice aftermarket parts (roller rockers) then the cheesiest timing chain you could get.
#49
The Street Avenger series use vacuum secondaries. Unless you're building a all out race engine that you want to also drive on the street you'll want vacuum secondaries. On the average hotrod engine mechanical secondaries will cause a bog if you mash the throttle in a low vacuum condition.
With vacuum secondaries the engine reaches peak vacuum and brings in the secondaries as the vacuum optimizes. Much more low end power, and better throttle response for street vehicles.
With vacuum secondaries the engine reaches peak vacuum and brings in the secondaries as the vacuum optimizes. Much more low end power, and better throttle response for street vehicles.
#50
you have the wrong carb,,, your stop light is your low vacuum condition, theres no pressure built up, once the engine is up in higher rpm vacuum is created, high vacuum condition where the mech secondaries are more needed