my olds 455 efi conversion

[hessdawg]

Really nice setup!

I've been kicking around the idea of converting my 455 over to an EFI setup. Have you posted more in depth details on your setup elsewhere? You mentioned you're using a MegaSquirt setup?

What's your increase in MPG after you converted? I currently get around 8 mpg with my carb setup. That's what I'm mainly looking to improve upon

Haven't done a in depth build. log let me know if you have any questions on the set up
I had a Holley 926 and I would usually get around 7 or 8 mpg with a th350 and a 3.23 rear end
When I swapped to Holley projection tbi and a 200r4 with the same rear end it the best I got was 17mpg
It now has full sequential fuel and spark ms3x same 200r4 I'd like to go to a t56 double overdrive
But I now have a 4.11 rear end. Car isn't on The road yet so im not sure what what my mpg will be

[hessdawg]

I may have missed it, what electronics are you using?

Ollie is correct a ms3x from megasquirt

[hessdawg]

Engine in the car
Plumbed and wired

[Dusted]

More pics soon?