Bought a Holley Street Demon Carburetor

[Auggie56]

Now comes the question of brackets to hook up the throttle and TV linkages. Any suggestions?

 

[Don67Satellite]

I'm giving @R413 the credit for this one, since he just suggested it in another thread. Should be the one you are looking for. Similar looking to the one Edelbrock sells for their carbs.

CARBURETOR THROTTLE LEVER EXTENSION

 

[Geoff 2]

I would see if you can return the carb & get your money back...or swap for an Edel carb....

 

[4speed68rt]

Show us some pictures of it. Is it the one that looks like a Holley or the one that looks like a box?

 

[Bee1971]

https://www.holley.com/products/fuel_systems/carburetors/demon/street_demon/

Looks like the old Thermoquad

 

[4speed68rt]

I run an old "Speed Demon" 650 vacuum secondary on my 440 and it works great. It's the one that looks like a Holley. I have Edelbrock and Carter carbs even Holleys, as well that I run on other trucks and cars. They are all good if you get them tuned in. Usually takes a long time because you have to drive them for a week or two to really realize the changes that you made.

 

[Auggie56]

When I was wrenching in the seventies I got turned off those classic Holleys because of the gasket shrinkage between the metering block and the throttle body. Which is the reason why I decided on this design. And yes I should have bought the Edelbrock, as its design is the same as the seventies Carter four-barrel, one on Chryslers we had very few problems with.

 

[forphorty]

I would see if you can return the carb & get your money back...or swap for an Edel carb....

The Holley Hater has entered the chat

 

[Geoff 2]

Yeah, always lurking, trying to prevent someone making a mistake...

 

[33 IMP]

I've got a virtually new 850 dp holley that is so glued together by those damned brown gaskets, I literally can't get it apart to clean/rebuild it. No place to pry on the bowls, and a dead blow hammer won't even knock them off. Can't get the main body separated from the throttle plate either!

 

[Mopar Hunter]

I'm giving @R413 the credit for this one, since he just suggested it in another thread. Should be the one you are looking for. Similar looking to the one Edelbrock sells for their carbs.

CARBURETOR THROTTLE LEVER EXTENSION

He’ll have to get this too, Holley’s proud of it.

 

[33 IMP]

He’ll have to get this too, Holley’s proud of it.

View attachment 1669358

I made mine out of an 8-32 screw, a couple lock washers, a regular nut and a nylon locknut. Under $2 total.

 

[PRHeads]

I've got a virtually new 850 dp holley that is so glued together by those damned brown gaskets, I literally can't get it apart to clean/rebuild it. No place to pry on the bowls, and a dead blow hammer won't even knock them off. Can't get the main body separated from the throttle plate either!

What I do in that situation is place the carb on a block of wood, and rap the float adjuster screw with a brass hammer.
Sometimes it can take a fairly serious hit.
I wouldn’t expect a plastic hammer to get it done.

Basically you’ll likely be ripping the gaskets in half to get it apart.

 

[RemCharger]

Once you get rid of the " ancient gaskets", you get rid of the " ancient gasket problem".
Not alot to it.

 

[33 IMP]

What I do in that situation is place the carb on a block of wood, and rap the float adjuster screw with a brass hammer.
Sometimes it can take a fairly serious hit.
I wouldn’t expect a plastic hammer to get it done.

Basically you’ll likely be ripping the gaskets in half to get it apart.

I assumed that. I just find it really hard to smack a carburetor with a hammer. I bolted It to the intake on my engine so it wouldn't move when I whacked it..... and I still couldn't get it apart.
Damn, I hate those brown gaskets! Then, even if I'm successful at tearing them up enough to get it apart, then I've got to figure out how to get the torn-up gasket off of the carb part. Damn, I hate those brown gaskets!

 

[Jonas Nordstrom]

Congrats on a awesome carb, I have done some write-ups on it.
It got some weak points but when you have ironed those out it is great.