How-To: Stromberg throttle shaft extension kit

We’ve written a new ‘How To’ article, with clear pictures, for the Stromberg Tech Center on how to fit our new 9139K Throttle Shaft Extension Kit. If you’ve got one of the old school 4×2 intakes that stagger the 97 carburetors close together, like the Weiand WC4D and Edelbrock CD-694, or if you have a new blower plate for mounting your 97s on top of a GMC-style supercharger, this is the kit you need. To download the ‘How-To’, just click here. We’ve also posted the pages below. Click the first page below then click on the page to move to the next one.

New Throttle Shaft Extension kit for 97s

DSC_9632If you’re lucky enough to own the famous Weiand 4×2 WC4D Small Block Chevy intake, or the Edelbrock CD-694 for early Cadillac engines, we’ve just launched the product you need ­– an easy-to-fit throttle shaft extension kit with ‘trim-to-fit’ support bracket.

If you’re not familiar with these intakes, they’re very narrow spaced 4×2 intakes where the carbs are so close together they can only be linked on one side – so you need long shafts for the right-side carbs. Most of the available blower plates are the same, as there’s very little room on top of a GMC-style supercharger.

Our new kit (Part number 9139K) starts with a high-grade stainless steel throttle shaft extension, with a larger diameter section extending as far up the shaft as possible to resist twist in operation. For improved looks, it covers the 97 throttle shaft bush. And for maximum security and alignment, it’s fixed with a 3/32” roll pin (supplied) through the hand throttle mounting hole, standard on the end of every 97 throttle shaft. It’s long enough for up to 3-3/4” carb offset across the engine.

The stainless steel ‘trim-to-fit’ support bracket, with its PTFE-lined bush for smooth operation, accommodates up to 4-1/8” in-line offset between the two banks of carburetors – enough for all ‘known’ applications.

Naturally, the kit works perfectly with all our other linkage parts so you can complete your linkage easily. Most of these intakes would use a simple direct linkage so you can just add four (or six) 9091K Superlink arms and join the swivels together with a length of 3/16″ stainless rod. You can pull it from your pedal with either a solid link to one of the stock carburetor throttle end brackets or use a cable with our 9136K Cable Throttle bracket.

To view this kit on our website, click this link. Each kit comes with ‘quick-fit’ help in the pack, and full and detailed installation instructions are available via the Stromberg Tech Center at .

Stop Carb Percolation! - Carb Insulator Spacers & Shields-1Check out this new product from our buddy Larry Fulton at Hot Rod Carbs, Montana, USA. It’s a line of premium carburetor heat insulator spacers and shields, which protect the base from direct heat transfer and the underside of the carb bowl from radiant heat. The range starts with these babies for 2-barrel carburetors – like Stromberg 97s. To quote Larry, “because of the extremely low evaporation and boiling point temperatures of today’s numerous gasoline blends (some as low as 100*F), carburetor users from around the world have been experiencing many problems related to fuel evaporation, vapor lock, percolation, hard starting and intake manifold staining. I can’t tell you how many cores I’ve taken apart over the years that have heat cycled so often they’ll shatter into pieces like a broken glass when lightly tapped on with a screw driver.”

The new insulators use a patented (and superior) material. They’re black in color for an OEM appearance and they’re only 1/4” thick for applications with limited hood clearance. Each has been designed to be used individually or in stacked configurations for even greater insulation. The material is able to withstand normal wrench tightening of the carburetor hold-down nuts and studs without concern of crushing. And lastly, each shield and spacer is engraved with the logo to give consumers complete confidence.

837 – 36th Ave NE
Great Falls, MT 59404