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The rebuild was the majority of that improvement. People kill for 10% gain, you got over 50%, unheard of. I gained 1-2mpg, went from 12 to 13-14 or so for the EFI only. When I added OD that was a game changer, and that only gained 25% Wow Katfish, thanks so much for this added clarification to...

I upgraded to a Classic Auto Air system which has a 4-stage compressor (instead of the stock 2-stage compressor) and it was much cooler. It was worth it to me to have the better A/C system for comfort. It uses the R-134A refrigerant and some changes were made to the brackets and hoses I...

My Edelbrock fuel injection definitely increased my gas mileage. Since I drive it around town about 7 months each year, the initial cost paid for itself in better gas mileage after about 5 years. I went from about 12 mpg to 19 mpg, but that included a great rebuild of the engine for my 340...

I have the Edelbrock ProFlow 2 fuel injection system. It has been installed for over 10 years on my 70 challenger 340. I really like it. The mechanic did say the system computer adjustment is in between the allowable settings, but it runs well. The idle is little high upon cold weather...

I had a similar problem recently and it was the red wire inside the steering column. It would not start at the key, yet I could start it at the solenoid. Once I replaced the multiwire connector at the turn signal switch inside the steering column then several things worked again (ignition...

I am pretty happy with my new Aluminum radiator for my 340. It really runs a lot cooler than before.

I would definitely change the front drums to disc brakes. I think the back drums can stay as is.

I also have electronic ignition installed. It is great.

I found it important that the voltage regulator must be grounded to the car from it's bolts into the firewall. I had an issue a year ago with my car not wanting to start. I tried to replace the voltage regulator and found the bolts to be too loose. When the back of the voltage regulator is...

Thanks so much Challenger RTA. I had the body restored and painted 2 years ago.

I started with the replacing the brake pedal switch, but things weren't fixed until the entire wire cluster was replaced.

Hello, I wanted to thank everyone on this thread. It showed up right when I started having electrical issues on my 70. I appreciated your detailed knowledge and assistance in guiding me in how to figure out what was happening. One issue happened at a time: 1st no brake lights, then no dome...

I have been thinking how it would be nice to clean up the wires under my dash to look less complicated. I only want to have old/unused stereo or alarm wiring removed, but am too concerned a mechanic would mess up something else. All systems work fine. I have recently restored the interior and...