Weber Edelbrock 500 Power Plenum - suitable for many other 4 barrel carburettors


At last its arrived, Our unique Power Plenum snorkel for Weber/Edelbrock 4 barrel Carburettor types. Offered here in an Aluminium Finish.

(We can also supply the 4 Barrel Weber Carburettor and manifold too, not included here, see our other listings for details or contact us.)

This item is also suitable for 4 barrel LPG converted cars and is designed to give near fuel injected performance from 4 barrel carburettor engines even when on LPG. This is why we call it the 'Power Plenum'.

Finally, its here!!! A Snorkel plenum that fits all 4 barrel Weber, Edelbrock, Holly, Carter, Rochester Carburettors.

Aluminium finish Power Plenum upgrade for all 4 barrel carburettors. Here suitable for both 4WD and 2WD but more so the 4WD, as 2WD vehicles tend to have restricted bonnet clearance issues. (we do offer low profile variants should there be an issue, see our other listings for details.)

Please note: Due to the nature and finish of the product, it is hard to depict the quality condition of the power plenum available. The pictures perhaps do not do a justice for the item and if you require further pictures and information please contact us.

(all approx)
  • Diameter of Inlet size is 64mm
  • Diameter of underneath centre 130mm
  • Overall Height 88.9mm or 3.5 inches
  • Overall Diameter 254mm or 10 inches

Will this fit my vehicle?

This snorkle Power plenum is suitable for all Rover V8 engines with 4 barrel carburetors, and is almost certainly correct for all American V8's with 4 barrel Carbs fitted too.

Added with our K&N Filter & Shroud

  • We also offer a KN air filter and shroud for use with the power plenum, however not included here in. See our other listings for details or contact us for more information.

LPG Option too.

Once fitted this will also allow you to run your 4 barrel carb on LPG (assuming you also purchase the LPG mixer kit and any other LPG components needed listed in our eBay shop).

This style of LPG conversion offers great gains in performance and economy. Also add to this our unique Lambda Loop LPG System and we have had over 20 miles per gallon from a 4.6 powered Range Rover Classic on LPG!

If you have any queries, please call us on 01603 891209

  • Below you can see a generic picture of the power plenum from our library, as such the item you receive may have a slightly different finish to the photo here

  • Below you can find a library picture of a similar style power plenum as fitted to a Range Rover P38.

FAQ Zone

  • Is it possible to Visit Rpi. for collection, further information or for parts to be fitted.
    For sure we have many customers from all over the world, that not only visit us but enjoy our unique hospitality, as well as our in-house workshop facilities that can cater for anything from major rebuilds, restorations, engine fittings, LPG conversions. As well as drop in chipping and ignition system upgrades. Holly our Engine builder (Head Chef maybe) can always find the time to show you around the world of V8 Rover engines and explain all variants and upgrades

  • Whats more, Now with online 'You-Tube'. videos too.
    To help give you the real feel of all we can offer, what we can achieve and the standards we aspire too we now have a space on 'You-Tube' for your enlightenment. ( to afford you a unique, real time snapshot of what you can expect from us. What's more, to see, feel and genuinely experience the passion we have for what we do and what we can do for your V8.

(See our other eBay items)

If you are paying by Paypal or are located outside of the UK, please refer to payment instructions. Please also remember our prices are inclusive of EEC VAT which can be deducted from your final bid price if you have exemption, or delivery of your item is outside the EEC states.

Summary of My Selling Policies
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All items purchased requiring modifications, upgrades, or for the inclusion of additional stock or non stock parts, may be subject to delay, however, you will be notified accordingly.
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Contacting us:

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We will endeavour to reply to emails within 24 hours. Hours of business 9 - 4:30 Monday to Thursday, 9-4 Friday.

Our Vat number is 373 2330 72

RPi Engineering International Ltd.
Wayside Garage,
Holt Road,
NR10 3EE

Technical specifications