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Dr. Hamman
Dr. Hamman, Technician
Category: Classic Car
Satisfied Customers: 2436
Experience:  I have 30 years experience repairing, restoring, and customizing cars, and pickup trucks.
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I have a 1966 with a 427CID. When I accelerate and put the

Customer Question

I have a 1966 with a 427CID. When I accelerate and put the engine under load, it starts to rapidly afterfire through the side pipes. IT is very loud, very rapid and continues while accelerating.
Tried resetting the timing many times. Seems to be a little better for about 2 minutes and starts again.
Any ideas? Anyone of you good on 1966 Carb vettes?
Submitted: 1 year ago.
Category: Classic Car
Expert:  Roy Belding replied 1 year ago.

good evening my name is ***** ***** I will assist

does it backfire out the pipes on de acceleration???

did you check the cap and rotor???

what is the swell or point setting????

any work recently done???