Ac throttle stop acuater thingy bracket

[ho70]

OK-What did you guys who have a bb 402 with AC do with your ac throttle stop thingy. Edelbrock does not sell a bracket, just the complete set up for $265. Ihave a performer inatake and 1406 eddy carb with no bolt holes to attach to.

[HO455]

Not the best video but it shows the idea and you get some Ramones too! The thingy is a fast idle solenoid. If you want to do your own searches.

https://m.youtube.com/watch?v=C2gX-fegdXw

[Steeveedee]

That's the idle stop solenoid bracket, which bumps up the idle speed when the AC is on. If you have some skills, you can make one. Stuff like this is why I no longer use E-brock carburetors. A properly set up Q-Jet has it all over them, in my experience- all that GM engineering is behind them. Maybe someone here has come up with a cheaper solution. Interestingly, my '70 truck with a 400 and AC does not have this solenoid. Maybe because it is a Federal Emissions truck?

[dmjlambert]

Sorry about chiming in uninvited since I don't have a 402, but I'm just curious. Do you feel you need an A/C idle stop solenoid? I have a 350 with factory A/C, and I didn't see any evidence my truck had a solenoid, so I don't think they were factory equipped for all configurations. The A/C compressor barely makes any difference in idle speed.

[tdangle]

Originally Posted by dmjlambert

Sorry about chiming in uninvited since I don't have a 402, but I'm just curious. Do you feel you need an A/C idle stop solenoid? I have a 350 with factory A/C, and I didn't see any evidence my truck had a solenoid, so I don't think they were factory equipped for all configurations. The A/C compressor barely makes any difference in idle speed.

Same here, my truck has a 350, the original carb and has never had a step up solenoid for the AC. I don't notice any difference in idle speed with the AC on or off.

[ho70]

thanks for the replies......my Qjet had a split in the base and jb weld was ineffective so son bought the eddy
I don't know if I need it as I just installed the rebuilt engine and am doing plumbing and wiring. Will try with out it and see and if I have to, I'll make a bracket...thanks for the video

[Coley]

A lot of times those solenoids were removed from the Quadrajets so its not uncommon to see them missing.
The clue is to look for is the single, spare wire & push on connector floating around the engine harness that connected to the 'missing' solenoid. Often laying up/around the intake manifold or tied off (cut off?) near the back harness entry point.
My 350/a-c truck was missing the solenoid as well.....and again, it was removed at some point, but the wire is still there
I have a few of them with the brackets, but just haven't gotten around to putting one of them back on....probably because I don't use/need the a/c on the truck much.
I'm pretty sure every a/c truck came with this on the carb....at least in the '71-72 trucks...not sure about the earlier ones.
Another reason they go missing is if the carb was changed out and it didn't have the casting aperture in the carb body to remount the solenoid bracket.....and a lot of carbs are non-original or newer.....so that solenoid would have been 'deleted'.

All good
Coley

[FirstOwner69]

Originally Posted by Coley

I'm pretty sure every a/c truck came with this on the carb....at least in the '71-72 trucks...not sure about the earlier ones.

All good
Coley

My '69 3/4 ton with a 350, Quadrajet, TH400 and A/C made in Fremont and bought new in southern California has never had a fast idle solenoid. I'm pretty sure they weren't used until 1971 or 1972 as you suggest.