HM2023 Induction

These are snippets to help you in your process of choosing which  path and whether you want to go there or not. Just little points to remember. History Pursuing higher performance on a given package, a few small block cars were outfitted with Weber 48IDA carburetors. The results were spectacular. Although Webers were originally fitted to the MarkII GT40, they were soon replaced with Holley four-barrels. To our knowledge only one big block car was fitted with Webers (CSX3033) however it was an after production change-over. The car was originally delivered with the dual four barrels. But legend often overwrites history. The eight direct pathRead More →

Either system, Weber or Injection will require a change in the typical fuel system, they operate at different ends of the spectrum than the typical four-barrel carburetor Weber’s The design of the fuel floats in a Weber carburetor require the fuel pressure be regulated between 2-1/2 to 4 PSI. This requires the use of a fuel pressure regulator as most electric pumps put out far in excess of this. Un-regulated, the fuel pressure will cause the needle to unseat and raise the fuel level, sometimes to the point of overflowing the vents.  There are in-expensive fuel regulators which will work in this range, however theyRead More →

WOW ! When the hood comes up and the eight individual throttles show, the reaction is almost always “WOW!” The FE with a set of Webers or ITB’s (Individual Throttle Bodies) is a very impressive setup, especially when its in a vehicle as small as a cobra. The first use of Weber carburetors on these cars was on the small block FIA cars. One of the many items employed to get more horsepower out of the 289. The next appearance was then on the GT40 MKII however they were short-lived since Ford opted for a single four barrel. I don’t know all the findings asRead More →

HM2023 Induction

Until you’ve owned and driven one, you don’t realize and appreciate how much the car is an instant carshow, no matter where you go. Stopping for gas is never a quick in and out. Everyone wants to admire and see more. To the average admirer, it’s the car and the craftsmanship. But to the gear head / hot-rodder, they want to see the engine. When you lift the hood, the original FE is an immediate attention getter – how’d you get all that to fit in there. But when it’s topped with an EightStack, whether Weber’s or the injected look-alikes,  Oh, man, that’s beautiful. AndRead More →

HM2023 Induction

Today, it finally clicked and I’ve figured out the tuning secrets of the Borla EightStack. I knew how important the linkage settings are and how sensitive they are. I was spending all my time to get the idle right but had overlooked the importance of checking at higher RPM’s. With a little trepidation, I set the RPM to 3,000 and checked the airfow. One side was 11, the other side was 18. Obviously, the cross-linkage was off. But why, it was OK at idle. Then I realized at idle, some of the blades may be resting on the venturi bores and unloading the linkage.  IRead More →

It’s gotta be perfect -or you’ll have issues forever I learned with the Weber setup the importance of good linkage. It’s important to get all four to work together, in sync and at the same position. With the EightStack systems, this is even more true. If the linkage is off even the slightest amount, you’ll have issues. Some tips I’ve learned, starting at the loud pedal and working towards the throttle bodies. Fuel pedal position, stops and movement With carbureted engines, we tend to take the pedal position for granted. If it opens full and closes, that’s good enough. With EightStack throttle bodies, the majorityRead More →