Opinions on MSD Atomic EFI for my Chevelle...…

[Ms Grumpy]

I have the MSD with the FAST EFI system. I have had it for over 3 years. I know that they have improved the systems more since I had mine installed and you are looking for a system to handle your big block.

I would definately call and find out as much info as you can about installation. When mine was installed it took a little longer than anticipated but not bad.

I do like being able to pull out the control box and plug it in to see if there is any problems or make adjustments. Just be prepared to either have the cord and box take up room in your glove box or, like I do, tuck the cord up under the dash and store the box in the glove box. Then I just can plug it in. I would also keep the instructions handy. Good luck.