Holley 350/500 Carb to Weber Manifold Adapter Kit
We manufacture these billet aluminum carb adapters in house, to our specs. We use only the finest materials in our spacers to assure the quality you would expect from LC Engineering. These are CNC machined out of a solid piece of billet aluminum. These are not a one-size-fits-all adapter like some others on the market. Ours are designed to fit a specific carburetor and intake manifold to allow perfect fitment. Adapter is 3/8" thick.
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- Holley 350 to Weber Manifold
- Holley 500 to Weber Manifold
To open a printable PDF version of this instruction CLICK HERE
Since the Holley carburetor bores are so much larger than the manifold it is recommended to port match your manifold to our adapter for optimal performance. LC Engineering recommends pre installing the adapter up to your manifold to see where you will need to port match the manifold.
Kit Includes:
(1) Holley Carb. to Weber Manifold Adapter(4) M8-1.25 x 35mm Hex Bolt
(4) M8-1.25 Nylock Nut Small Patt - Zinc
(4) M8 Wave Washer - Zinc
(4) 5/16-18 x 3/4 Allen Bolt
(1) Holley Base Gasket
(1) 20R/22R Weber Pattern Base Gasket
Installation:
- Block off your EGR mount.(If it does not clear the Throttle Linkage you will need parts # 8010086 and # 1035087)
- Pre install the adapter onto your manifold (no gaskets). Inspect the manifold opening and port to match. Any port work should be done with the manifold off the engine. Make sure to clean the manifold thoroughly after porting. At this time cut the base gasket to accommodate to your new larger opening.
- Install the four M8x35mm Hex Bolts from the bottom of the adapter. The part number is engraved on top of the plate for reference.
- Lightly coat lower gasket with white lithium grease on both sides (to help seal better) and install onto your manifold. Set your new adapter on top of the gasket.
- Install adapter on intake manifold using the supplied allen bolts to attach adapter to manifold(Lock-tight can be used).
- Lightly coat carburetor gasket with white lithium grease on both sides. Install your carburetor onto the adapter and use wave washers and nuts to tighten down. (DO NOT EVER TIGHTEN, IT WILL DAMAGE THE CARB. BASE)
15 Reviews Hide Reviews Show Reviews
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Lce always great to deal with!
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Exactly what I needed!
Am adding a Holley Sniper EFI to a74 BMW 2002. Ordered the Weber to Holley adapter from LCE. Found them online. Easy ordering, prompt shipping, and best of all, excellent, precise instructions. A perfect fit!
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carb adapter
fit excellent service perfect and fast
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Great Product
Excellent adapter super high quality!
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adapter was shipped with intake
was shipped with intake
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Overall experience w/ LCE
Would I recommend LCE to anyone? I already do to everyone. Whatever you're thinking of doing to your Toy or you think you have an awsome idea just try checking there site out. Im sure you won't be leaving the site without an even BIGGER image of what of your rides future will look like. Quality: great, Prices: best I could find from where Im at, shipping: well generally shipping to HI State sucks no matter the site you on, customer service: poor (cause Ive never ever had to call them) product description printed in plain american english. But im sure it would be a great experience to be able to have them help you with everything besides the "hands on experience".