How much power does a tunnel ram add?

Tunnel rams also have a wider operating range than other types of manifolds. They can make power from 1,500 to over 8,000 rpm.

What is the benefit of a high rise intake?

High rise intakes on the other hand are better at building horsepower in the upper RPM range and typically have larger and longer intake runners. The power band of a high rise usually starts around 2700 to 3000 rpms and they can be capable of making power all the way through 7000 to even 8000 rpms.

Is dual intake better than single?

Choose a dual-plane intake for better idle quality, off-idle throttle tip-in response, and better air/fuel charge distribution to the cylinders at low rpm. Choose a dual-plane intake if you want longer runners to move the rpm band down.

Which is better single or dual plane intake?

If your vehicle is mostly street driven, go with a Dual Plane Intake Manifold. If you have a dedicated race engine that lives at high rpm or a modified, big-cubic-inch engine then a Single Plane Intake Manifold may be a better choice. Either way, you need to match components that work in the same rpm range.

Why would you use a dual plane intake?

Dual plane manifolds make better power off idle and at cruising rpm. The smaller plenums increase the airflow velocity. They also transmit the induction pulses from the intake valve to the carburetor better. This improves fuel atomization and metering, especially at low rpm.

Would a dyno tell the difference between Hi-Ram tunnel and Dart Tunnel?

Only the dyno would tell. With the cool factor and design theories established, the only thing left to do was get them on the dyno. Our trio of manifolds included a Weiand Hi-Ram tunnel ram, a Dart as-cast tunnel ram, and a second Dart tunnel ram massaged by Wilson Manifolds.

How much power does Weiand tunnel ram add?

The Weiand tunnel ram improved the peak power numbers to 777 hp at 6,600 rpm and 681 lbs/ft at 5,600 rpm. Though a peak gain of just seven horsepower doesn’t sound like much, the differences were much more significant elsewhere in the rpm range.

How much power does a 540 BBC put out?

Run with the Dart tunnel ram and Ultra Dominator carburetors, the 540 BBC produced peak numbers of 806 hp at 6,700 rpm and 694 lbs/ft at 5,500 rpm. Measured peak to peak, the Dart tunnel ram improved the power output by 29 hp and 13 lbs/ft of torque, but the gains were as high as 51 hp at 7,000 rpm.

Are all tunnel ram manifolds created equal?

One thing we discovered during testing of a trio of different tunnel rams on our 540 Dart SHP motor was that all manifolds are not created equal. Truth be told, like most induction systems, tunnel rams are actually designed for specific applications and rpm ranges.