383 popping through exhaust. After installation and heat cycling it, it has now started to backfire out of the exhaust which sounds like gun Something causing an exhaust valve not to open would make the engine pop through the carburetor, not the exhaust. All of the popping is out the Hey guys, I've been having some problems with my 1 year old Holley Street Avenger Carb on my 383. Whatever it is, the exhaust valve has to be open for a pop to get into the FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - 390 "popping" through exhaust during acceleration, engine stumbles, lack of power. 5:1, a Competition Cams model Need some help fellas. I pulled my dizzy I came home from the car show and noticed more than before popping sound through the exhaust. Although it is only 50* here today. If you would like to help support the channel you can do so by Started out popping from 2500 rpms up with timing at 38, I have continued to lower timing and popping only occurs at higher rpms, now at 28 only pops 5000 rpm and above. 1969 with 383 and Edelbrock carb. I was wondering if it Popping noise seems to present itself when mostly at idle or decelerating. Running rich and loud popping often You really need to tool up a bit if you haven't got the basic instruments for tuning your 383. Heres the scoop, fresh 383 rebuild trying to get it tuned! The car idles and starts fine. Check for vacuum leaks. This is usually due to a lobe on the cam that is going bad. After installation and heat cycling it, it has now started to backfire out of the exhaust which sounds like gun shots at idle. One other question. - Engine idles great, is smooth just off idle until i Customer: I have a Chevrolet 350 engine that has been built to 383 cubes, featuring Dart Sportsman heads, a compression ratio of 9. The popping is coming out of the passenger side exhaust. I have a really loud I have a 383 in a '71 Duster and I can't seem to figure out why it sometimes backfires through the carb during hard acceleration. Even in park, if you mash the gas the car will almost stall out, then POP!, then if you let off the gas it The car was pinking and backfiring through the exhaust and running a little poorly when I got her, when i checked the timing it was i think about 18* but was pulling in a massive amount of mechanical Popping through the exhaust is usually a lean condition which causes an over-heated exhaust. which is un-metered air If the engine sounds like exhaust is popping up through the carburetor, sometimes that is due to one or more exhaust valves not opening fully. I currently have a brand new small block Chevy 383 with holly EFI in my sandcar. I believe my timing has something to do with it, what do you think? (Vac disconnected) Initial timing sbc 350 popping out exhaust through out rpms 1 reading Jump to Latest 34K views 29 replies 12 participants last post by prettyboyced Sep 13, 2011. This can also be caused by a extremely lean condition. If the problem persists with a new thermostat, run a Your 'popping' back through the throttle body indicates a 'timing' miss (cross)-fire. But above 3k rpm on acceleration this thing pops out the exhaust and Popping, backfiring through carb and exhaust. Off idle feels good. It has a 600cfm holley on it accelerates great at times but at other times it starts popping through exhaust. It is important to have the engine at proper operating temp to get the proper burn ratio in the cylinders. Get an Actron Model 612 on eBay for $20-40, and a decent I currently have a brand new small block Chevy 383 with holly EFI in my sandcar. At first we thought the resinators had holes in them so we replaced the Start by installing a new thermostat. It almost sounds like you are 180 degrees out with With it popping out of the exhaust it almost has to be a ignition/plug problem or something to do with a exhaust rocker. . I just noticed you installed I have 383 stroker popping in the carb and exhaust. Just curious if any one might be familiar with a similar popping noise and point me in the right direction as to where For rough idle and exhaust popping on a Chevrolet 350 with a 383 build, check ignition timing and carburetor settings. Most the time, it's a vacuum leak,. from there we The exhaust is still stinky, wet and kind of white puffs coming out. The motor was in the car when I bought it so I don't much about the FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - Popping/Backfire out exhaust pipes - Ok, When I'am going down the road at a steady speed theres loud popping/backfiring coming from :confused: I have an sbc that was broke in on the dyno about 2weeks later here comes this poppin/backfire out the exhaust i took the whole car back to shop that build the motor. I have a 71 Dart with 383 ->489 Source stroker kit, 10:1 compression, Hughes solid lifter cam, 2" tti headers, holley HP 850 carb, stealth heads, Mallory ignition box and coil, etc. Started by mamatried01, March 06, 2007, 12:02:15 AM Previous topic - Next topic Print Go Down Pages 1 my 383 stroker seems to be running okay overall, but if I bring it up to about 3000 it starts to intermittently pop out the exhaust, and missing on the right bank somewhere. It was previously doing it maybe 1 time per ride, now I took it out yesterday and it was doing it the whole time (about 25 minutes) Anything more than halfway down in this video I describe how I repaired the popping coming out my exhaust on my 1970 chevelle. We noticed a popping noise when we first started driving it. I sprayed carb cleaner around the intake and carb base and it didn't change the idle.


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