340 problems

[swarthout]

Hello. I just finished a 13 year project and got my 73 challenger completed, I thought. I have a 340 that was completely rebuilt and I did my break in a few months ago and everything was a success; oil pressure, temp, etc. I took my manifolds off and installed Doug D453 headers. I was able to start it multiple times and it fired right up. I took it for a short drive (100 yards open headers) before having it towed to the exhaust shop for pipe/mufflers, again everything was fine. Started fine after the tow and onto the racks for the exhaust. After the exhaust was installed (2.5” pipe with Flowmaster 40’s) they informed me that when they backed my car off the racks they could hear a strange sound and it seemed to idle high. I elected to have it towed back home rather than drive it to the alignment shop and now I can’t even get it to start. When trying to turn it over all my belts and pulleys turn normally. I have fuel in the carb. My question is what would you check first? I feel pretty defeated so I appreciate any advice I can get. Thank you in advance.

 

[rallye340]

You have fuel in the carb and it turns over, I'd check for spark first.

Cheer up, probably just a minor setback.

 

[AUSTA]

Is it getting voltage to the coil when cranking.
Did they do any welding on the car without disconecting the battery

 

[Heywodja]

Beautiful car, sounds like a wire got disconnected laying on the headers and got burned... Try moving the gearshift to neutral and starting it, sometimes the neutral safety switch gets bumped and came loose. Other than thet ir is just basic trouble shooting, trace very wire to make sure they are properly secured and not burned.