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Type: Posts; User: Boiler455
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10-28-2003 04:05 PM
Thread: 77 454 Backfire & tick
by Boiler455- Replies
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77 454 Backfire & tick
I am working on a 77 Custom Deluxe 30 w/ HEI ignition. It has a backfire through the carb. Happens when I crack the throttle, and is worse when the truck is on the road. Does not like over about...
Thanks Glenn, it’s believed to be a Gen 5. 454. I’ll see if I can snap some pics of the stamped and cast numbers and post them here. Maybe we can define the year and model
GM Engine de-coding