Cuts Out When I Put Pedal to Floor - The 1947 - Present Chevrolet & GMC Truck Message Board Network

4tiresngas · 11-02-2005, 09:41 PM

Okay, I have a 69 SWB Step with a 87+ 350 with 350 auto. It has HEI. I have replaced the plugs...gapped .045, replaced the rotor, cap, wires, and vacuum advance. I set the timing to 8 degrees advanced. The idle is around 850. It cranks as soon as you touch the key and runs smooth. In park, I can floor it and the engine sounds fine. When I'm driving it and push the accelerator quickly, it bogs down. I can accelerator slow/smoothly with no problems. The carb is a 4-barrel quadrajet (rebuild)...less than 6 months old from AutoZone.

Do you think it is the vacuum going to the vacuum advance or something else?

11-02-2005, 09:41 PM	#1
4tiresngas An American Soldier Join Date: Feb 2005 Location: Grumolo D' Abadessee, Italy Posts: 503	Cuts Out When I Put Pedal to Floor Okay, I have a 69 SWB Step with a 87+ 350 with 350 auto. It has HEI. I have replaced the plugs...gapped .045, replaced the rotor, cap, wires, and vacuum advance. I set the timing to 8 degrees advanced. The idle is around 850. It cranks as soon as you touch the key and runs smooth. In park, I can floor it and the engine sounds fine. When I'm driving it and push the accelerator quickly, it bogs down. I can accelerator slow/smoothly with no problems. The carb is a 4-barrel quadrajet (rebuild)...less than 6 months old from AutoZone. Do you think it is the vacuum going to the vacuum advance or something else? __________________ Dan dan.brue@us.army.mil



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