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Old 04-17-2011, 05:26 PM   #3
Foosified
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Join Date: Oct 2006
Location: Edmonton, AB, CAN.
Posts: 152
Re: SBC 350 Engine Backfire Through Exhaust and Carb

I recently built it up. I broke it in. I have't really driven because of the backfire issue and plus the fact I'm still finishing the body. I recall it backfired once in a while after the initial breakin out one side, but now it seems to have gotten worse and happens out both sides.
If it were a cam or lifter issue why would i have backfiring through the exhaust?
Quote:
Originally Posted by Gumby View Post
Ok what happened???

it ran fine then one day it.......

Or you got done building it up and now it don't run?

new parts aren't always good parts, only time similar was half of the pickup coil in the HEI was bad it seemed. As with a timing light all cylinders would randomly miss. It happened after a intake swap.

Ended up having one built by Dave Ray / AKA IgnitionMan

Kinda like would you buy a Microsoft or Apple computer from a store or get one hand built, programmed and performance tested by Bill Gates or Steve Jobs themselves for about the same price?

http://www.davessmallbodyheis.com/
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