Installing Holley Spreadbore where Quadrajet was.... Throttle bracket help.

[wilyesteve]

Just bought a new Holley 4175 because I was tired of dealing with my quadrajet... I thought this would be a drop-in application, but you know how that goes....

First, it looks like I need at least a 1" spacer because the front fuel inlet hits the water neck. Also, the existing fuel line is not long enough so I'm going to have to get a new one....

Second, the aft mounting studs go right into the rear fuel bowl with about 2cm of clearance between the fuel bowl and the baseplate, so there is no room to put the existing throttle cable bracket there...

What can I do to attach the throttle cable mechanism to the carb? To clarify, not the part that operates the butterflies, but the part that holds the throttle cable parallel with the carb.

I see products like this:

80 bucks for a spacer? What?!?

Is there any other way to hook this up reasonably cheaply?

 

[greg82255]

Re: Installing Holley Spreadbore where Quadrajet was.... Throttle bracket help.

How about this for $32.50?

http://www.cpperformance.com/p-341-...bracket-for-holley-sea-demon-carburetors.aspx

 

[wilyesteve]

Re: Installing Holley Spreadbore where Quadrajet was.... Throttle bracket help.

Definitely better price... The guy at advance told me that the throttle cable bracket is the same whether it's Marine or automotive. Can this be true?

 

[wilyesteve]

Re: Installing Holley Spreadbore where Quadrajet was.... Throttle bracket help.

Is an automotive bracket the same thing?

 

[Scott Danforth]

Re: Installing Holley Spreadbore where Quadrajet was.... Throttle bracket help.

I am using a similar type of bracket on my boat, except for my square bore.

you may have to make a new fuel line - I did on my holley 4150 when I added a spacer. I bent up a 3/8 brake line and fired up the torch - debrazed the joint from the old plumbing, re-brazed the new line to the tee. make sure that is done off the boat since it is a fuel line.