Barracuda Challenger Forum

Author Topic: Cant get rid of backfire  (Read 320 times)

Offline cuda lover

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Re: Cant get rid of backfire
« Reply #15 on: May 14, 2017 - 03:33:24 PM »
I would recommend a compression test first. Record and post the readings. Are you using the original stamped rocker arms?

I will post compression test results. My friend has to come over with her compresssion tester.

I used COMP Cams Pro Magnum Shaft Mount Roller Rocker Arms 1622-16
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Offline Chryco Psycho

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  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: Cant get rid of backfire
« Reply #16 on: May 21, 2017 - 10:38:54 AM »
Wow! Nice 340 build! These Edelbrock carbs are ok for a stock to mildly modified engines. Your 340 with 7-8 InHg at idle may be too much for this carburetor making it difficult to impossible to tune. Was the cam installed with a degree wheel or "straight up"?

I agree the Eddy carbs are not tunable , change the carb tune it in& the problem will go away
 I like the proform carbs , best bang for the $$ spent

Challenger - You`ll wish You Hadn`t