Quote:
Originally Posted by twag4
If I recall, my original statement was in regard to carbureted v8 engines back in the good old days. I claim no knowledge or experience with itb. I have employed many a long runner Holley street dominator and strip dominator high rise intakes, and I promise you they reduced bottom end and increased top end.
|
That's likely due to a weird synergy the carburetors in question had with your particular intake manifold like dual plenums which do weird things to airflow based on what you stack on top. It's just due to weird antiquated designs that have strange airflow characteristics. Shorter is better for top end power and longer for low to mid torque all things being equal. When you start mixing different types and sizes of carbs with various jets with various spacers and various IMs all bets are off till you get on a dyno or have an understanding of how the airflow will acquit itself from experience.