Street Demon Insulator

[Tims 66 Cuda]

Does anyone know of an insulator gasket thats compatible with a Street Demon 625 carburetor. Thanks in advance. Tim

 

[Oldmanmopar]

Any 4150 base .

 

[Tims 66 Cuda]

Thanks for the reply. Didnt know if that would work with the slightly larger secondaries or not. Ill check it out.

Thanks, Tim

 

[12many]

Any open spacer/insulator for the 4150 will work. Just curious: is your 625 the composite body or alloy?

 

[Tims 66 Cuda]

Composite

 

[MopaR&D]

Demon designed that carb to mount on any square-bore flange (not Dominator of course) which is why the secondaries are actually one big valve; they couldn't make the opening in the throttle plate any wider so they removed material between the two sides.

So yes any 4150 or Edelbrock square-bore insulator, spacer, gasket etc. will fit fine. I know on my 750 Street Demon the manual says to make sure to use the included metal plate under the carb at the very least (with a gasket on both sides) so that the atomization for idle and transfer slots works correctly. For mine I have the carb, then paper gasket, thin plate, another gasket, 1/2" wood fiber spacer from Edelbrock iirc, then one more paper gasket on top of an Edelbrock RPM intake.

 

[Tims 66 Cuda]

Thanks for the replies. I put in an Edelbrock 12410 insulator gasket and so far so good.

Tim