When fitting the Weber 500, which intake manifold do I need?
When purchasing the complete Weber 500 carburettor from us we will indeed ask you what vehicle it is being fitted to. Not simply because we are interested but also to establish if there are going to be any bonnet clearance issues. In almost all 4wd applications there is no issue of bonnet clearance and we will supply the Edelbrock intake manifold, in 2wd applications we will supply the Offenhauser intake manifold as bonnet clearance is often something to consider here.
Edelbrock Intake Manifold
Offenhauser Intake Manifold
Edelbrock Intake Manifold Explained - Dual Plane
Shown here is the Edelbrock Dual Plane intake which is often too tall for 2wd models, so normally supplied to 4wd conversion only. The advantage in design is that it offers great torque and bhp gains as would be expected when combined with the Weber Carb upgrade, and it has the best ability for high revving, higher performance engines for low-end idle. Emissions are normally improved, but the dual port manifold [below] does it even better.
Offenhauser Intake Manifold - Dual Port
The Offenhauser Dual Port manifold is designed to be considerably lower than the Dual Plane, (detailed above) so is supplied mostly for 2wd drive V8 applications. By design, it splits each intake port into 2, the upper section only supplying fuel at lower throttle settings, and the lower section supplying additional fuel when higher performance is required. With this intake you can expect superb part throttle economy & torque as well as superior top-end performance.
Along with getting the correct intake manifold to fit the Weber it is also important to ensure your ignition system is in good condition. We suggest upgrading with Magnecor plug leads and our Power Amp, for standard distributors, or indeed the Mallory distributor.
The Weber 500 carb an fixings can be found in the Carb/EFi section of our eBay shop
Ignition upgrades can be found in our Ignition section of our eBay shop