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old school 440 EFI conv

Mopar Muscle
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old school 440 EFI conv

bj954 bj954
New User | Posts: 7 | Joined: 04/13
Posted: 05/02/13
05:29 PM

has anyone done an EFI conv onto an older 440
Wondering what the HP gain  or fuel milage improvement might be  

waynep712222 waynep712222
User | Posts: 127 | Joined: 04/13
Posted: 05/03/13
07:34 AM

have not performed this personally...

can go either way... depending on the system...

there are bolt on self tuning throttle body EFI units that are just plain simple...  and work great..

would you like to read some articles on them..???

there are also ways to improve your fuel economy with your carb ...

you will need a few tuning items.. like installing an oxygen sensor bung in the exhaust pipe... most muffler shops can do this for around 40 bucks..

pick up an oxygen sensor..  a 35 buck air fuel ratio display..  a vacuum gauge... and a bracket to mount them to... you can also mount them on a rubber bracket that is not fully installed and power them thru a cigar lighter plug..

the oxygen sensor bung is something you will need for EFI anyway..

you will also want if you have points.. to convert to electronic ignition..  a few dozen ways to go there also.. but factory chrysler electronic works fine..

lastly.. do you have to smog test your car..??  or are planning on selling it where it has to be smog tested..

share some more year make and model .. carb type.. and perhaps carb number..

a decent description of how its running currently... and how you drive it..

there is a sweet spot in carbs.. where the engine is cruising at part throttle to get the best fuel economy.. this involves some careful measurement of the exhaust flow...

idle circuit..

idle transition circuit

primary main circuit..

secondary main circuit..

when its running at the top end of the idle transition circuit and just barely on the primary mains.. is where the sweet spot is..

if you don't operate the engine at HIGH RPMs Wide open throttle.. you could  even swap to one of several smaller carbs to perhaps pick up some fuel economy over a factory tuned 60s and early 70s tuned carb.. when gas was 28 cents a gallon..  

bj954 bj954
New User | Posts: 7 | Joined: 04/13
Posted: 05/14/13
06:51 PM

Thanks for such an informed and detailed reply

Whichever way i go i will have to shop the work out as its beyond my skill set
Another option--more costly-- but big Wow Factor is to go GEN 3 Hemi into the Ram4x4

Just starting to dig and it appears that  the Gen3  will bolt up to an older 727Auto as long as it has the smaller 318/360 bellhousing
I can do the nuts and bolts r&r and make engine mounts etc but the computer needs and the harness and gauges are way beyond my skills

Are there any  blogs or manuals around with Gen3 Hemi into Older Muscle is avail
Thanks for your interest  

waynep712222 waynep712222
User | Posts: 127 | Joined: 04/13
Posted: 05/14/13
08:00 PM

actually... i am almost sure that mopar performance parts has exactly that manual available....

this might be a place to start reading at..

hemi swap articles are spread all over the magazines.... over 40 magazines on this site...

would you like to read more articles???  

bj954 bj954
New User | Posts: 7 | Joined: 04/13
Posted: 05/16/13
06:40 PM

yes thanks- ill have the Ramcharger in Vancouver for the next few months--would like to find a gen2 or gen 3  to do the swap before the fall-from what Ive read a truck Hemi is the easiest swap--I just need motor--not trans
Ill need a shop or a hobby skill guy to do--beyond my abilities
any help much appreciated