New High Flowing single plane intake manifold, available for 4150 and 4500 series carbs.
This manifold is a much needed addition to the line of intake manifolds we already carry. It's designed for applications requiring a larger runner volume for higher rpm power which until now our only choice was the Victor. The big advantage of the Northwind is it equals or out performs the Victor in many applications while being 1 1/4" shorter. We have some CNC porting programs available and more in the works. Pricing starts at $270.00 for the intake only, or $320.00 with a water crossover.
Patterned after Q-jet guru Cliff Ruggles personal modified OEM iron intake, a back to back dyno test showed a 12 hp gain over a stock plenum OEM intake. Call for core availability and price or you can send us your OEM iron or aluminum intake. Below prices do not include an intake core. Water Crossover can be seperated at an additional charge, call for more info.
$175.00 CNC plenum + hand finish
$275.00 CNC plenum + hand finish + port matched runners.
$375.00 CNC plenum + CNC port runners + hand finished (we've made over 600hp with these modifications!!!)
* SD Performance reserves the right to change prices without notification.
* Canadian customers, please add GST. BC customers, please add GST and PST