quadrajet-cam

See 1976 Chevrolet pickup with Rochester quadrajet upgrade on SBC 350 V8. We removed the hood, mounted a camera looking down on the air horn, and took it for a spin, running wide open on an uphill grade. See how the secondary air valve responds to rpm drop at each upshift of the THM. Also included is a smoking burnout.

Category:

Autos & Vehicles

Tags:

• Rochester
• quadrajet
• Q-jet
• SBC
• 350
• small
• block
• chevy
• chevrolet
• 1976
• pickup
• C10
• burnout
• sleeper

[whirlwind454]

Hello. Did the truck gain more power on the low and top end?

[rodlamer]

If it has mechanical secondaries you can set them to open whenever you want, from almost idle to at the very end of the throttle being all the way down. Vacuum secondary carbs don't work as good like the one you are showing.

[Starkster50]

That was a awesome real world test video!

[1foxtrot70]

Listen to your granny!

[brandon1997bmx]

I have a 1978 el camino with a quadrajet carb. today i was cleaning the carb with carb cleaner and i started it up afterward and now when i start it up it runs on high. i looked at the throttle and it was stuck so i pushed it back where it is supposed to be and i started it and it gets stuck AGAIN ! . what do i do ???? i need Help !!!

[monaco74]

Is that a screw type hose clamp on the AC compressor? That can't be good for holding in refrigerant.

[RicerEater1978]

adjust the tension on the air valve and you can get quite a bit more midranged power ;)

[Mikej1592]

oh man, I have wanted to do that sooooo badly on my car LOL, never took the time do do it thats awesum.

[chairmnofthboard]

Great video, thanks for taking the time to make and post this video, it really helped me understand the secondaries.

[nattyicse]

ps never remove the air valve flaps