Carburetor Stromberg 97 – vacuum port. Genuine Stromberg 97 – vacuum port. They’re just the same. But better than ever. A brand new genuine Stromberg 97. And on this model, a specially developed fitting to provide ‘ported vacuum’ for your modern vacuum advance distributor. Available only from Stromberg Speed Parts.
The ported vacuum 97 base is also available separately if you already have a suitable Stromberg 97.
Read more: https://www.stromberg-97.com/product-index/genuine-stromberg-97/?cat=genuine-97