Who has added EFI to 396 BB

[69 customcamper]

Looking for pointers to which EFI system is best. FiTech ? Holley ? Edelbrock ?

Wanting to install on 69 3/4 truck. Hoping for a little less Gas smell out the tailpipe and improved idle and fuel mileage possibly . Mostly though More consistent idle at warm up. Has a 396 that is bored .060 over. Or do I LS Swap it to an LS big block ?? How does an old school big block compare to a LS big block ?

[bluek5]

Have you seen this thread?
http://67-72chevytrucks.com/vboard/s...&highlight=Efi

[OARNGESI]

Ls big block?

[69 customcamper]

Originally Posted by OARNGESI

Ls big block?

No Standard 396. I have an RV CAM and it's bored .060 over. Smell like alot of fuel out the tail. Curved the DIZZY and nice fresh Quadrajet . Idles rather rough at 750 RPM. Tired of Carbs. None of the quadrajets ever last long till they are gas soaked.

[weq92f]

.
I'm running MSD Atomic ( full kit, with return fuel system ) on top of a 1970 402 w/#063 heads. It was dreamy with stock bottom end and valve train. I upgraded to roller cam XR270HR and associated head work/hardware and the Atomic has compensated pretty much without much "tuning" required.

Cold start is just like a modern motor. It fires first try, idles immediately to about 900 then starts slowly ramping down to target which in my case is set to 650. It takes about 3 to 5 seconds to hit the target idle.

Warm start is usually the same as cold start, sometimes differing slightly depending on temps and how long between shutdown and restart.

Hth,

-klb

[69 customcamper]

Originally Posted by weq92f

.
I'm running MSD Atomic ( full kit, with return fuel system ) on top of a 1970 402 w/#063 heads. It was dreamy with stock bottom end and valve train. I upgraded to roller cam XR270HR and associated head work/hardware and the Atomic has compensated pretty much without much "tuning" required.

Cold start is just like a modern motor. It fires first try, idles immediately to about 900 then starts slowly ramping down to target which in my case is set to 650. It takes about 3 to 5 seconds to hit the target idle.

Warm start is usually the same as cold start, sometimes differing slightly depending on temps and how long between shutdown and restart.

Hth,

-klb

How is the mileage ?

[weq92f]

Originally Posted by 69 customcamper

How is the mileage ?

I think pretty miserable but I've not tested it.

A buddy and I did nearly the same amount of driving one day to and from a show. He was running a 67 Chevelle 350/350/3.08 w/carb and I 402/700r/3.73. We topped off before and then again after all the miles. He used 6 gallons and mine was 8.

Whatever that means LOL!

-klb

[67gmchacker]

holly sniper on my 69 chevelle ss396 love it!!!!!!!!!!!!!!!!!!!

has a huge cam and fires right up cold and idles perfect.. i did the holly dual sync distributor to go with it, dont have one bad thing to say about it

[mrtoni]

I want to do efi on my 454 burb. It’s got a new long block no carb. Has anyone done efi setup on a. Re non running engine?