Junkyard FI Intake manis, fuel rails, throttle bodies for 440 Mopar

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JustRV

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Hello all,

This is my first thread, i recently acquired 1977 Apollo 2600 DB with 136k miles - its a 26ft RV with a 440 Mopar in it.

I changed the oil and gave it some fresh fuel and it fired right up after about 13years of sitting outside.

i am eventually thinking of converting it to electric but for the time being, looking to get it fuel injected mainly for reliability and mpgs ... i have successfully been running microsquirt on 4cyl engines and it seems like i would be able to run fuel on 8cyl only without any problems using microsquirt. I think I would be able to run fuel only with speed density therefore I dont really need tps but do need some type of tb to control the throttle, it would be nice to have tps tho and be able to do a mix of alpha-n n speed density.

Biggest concern is adapting a crank position sensor to the block. id really like an actual CPS and not one of those harmonic balancer mounted things with a magnet on a bracket. ANY IDEAS ?? without taking out the block out of the rv?

ALSO ... WHAT RELATIVELY MODERN (1985-2010) VEHICLES CAME WITH INTAKE MANIFOLD or manifoldS that WOULD BOLT UP to the 440 MOPAR and DO HAVE PROVISIONS for BOSCH type FUEL INJECTORS or any injectors that could be found at the junkyard ???

The fuel rails would come from the same vehicle that the intake manis come from

throttle bodies i could just use an that has TPS and are big enough.



I guess if there is nothing like that what im looking for at the junkyard, I could always just machine some counterbores into my current ederblock intake mani then use one 4cyl fuel rail for each side , take off the carb and make an adapter for two 2" dia. throttle bodies off of a early VR6.

Buuuuut in this case ... would the spacing of the injectors matter much?? what would dictate it ?? the spacing of cylinders in the block? id want to be on center of cylinders ... correct??


thank you

And some pics n vids for views below:






Thank you

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The big blocks were discontinued in 1978, so none were ever made with EFI from the factory.

You can get aftermarket intakes with injector bungs, though.
 
Kind of the same deal. I had a MAC Tool truck with a aftermarket Holley fuel injection in it. It was a 454 Chevy but still the same type chassis. I had constant issues with the injection so I took it off and went back to a carburetor. I didn't notice any increase in mileage, power, or drivability. It's up to you but a lot of work to inject a 440 with not much pay off. A vehicle like that only get's 5-6 mpg regardless of whether it has a carb or injection. My diesel truck got 10 mpg but the fuel was higher price. Not double in price so there was a savings there.
 
I personally don't see anything wrong with a "harmonic balancer thing". The factory magnum setups---I've torn down a few---even though phsically protected inside the bell, are subject to oil and a certain amount of road trash, sand, gravel, and if a stick, are subject to clutch material "throw off." So those are not entirely safe from harm.

Also people get on this kick that you MUST have port injection, and it's somehow better because the manifold is dry. There is one big advantage to TBI--it's simple-- (well, more simple) and with EFI having far better metering stability than a carb, the argument over port vs TBI in my brain is minimal. "What would you gain?" I believe the hoo-raw over the problems with TBI stem from the time and era in which the OEM used them---electronics wasn't as good, and neither was the engineering/ experience of the people who designed and made them. AKA use a better electronics package, the trouble was not in the injectors per se

With a simpler TBI system--like a Sniper--you don't HAVE to HAVE to use a crank trigger, either. You can lockup the Mopar dist. and use the trigger as is and still have computer control of advance
 
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EFI on a Mopar big block is a "do it yourself" sort of project. There are plenty of parts available but none of them are really beginner friendly. You'll need to do some research and follow instructions to put EFI on a big block Mopar. Good luck.
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While converting to port injection is possible, I don't see the need on something like this. Get a Holley sniper, Fi-Tech, or any of the other TB EFI setups and be done with it.
The crank trigger on the damper or pulley works just fine. Although I believe with micro, you can use the distributor signal since it is just batch firing anyway.
 
While converting to port injection is possible, I don't see the need on something like this. Get a Holley sniper, Fi-Tech, or any of the other TB EFI setups and be done with it.
The crank trigger on the damper or pulley works just fine. Although I believe with micro, you can use the distributor signal since it is just batch firing anyway.

I agree, a Sniper will work just fine. I just finished tuning a Sniper on a 700 hp big block. Starts without touching the gas pedal and sits and idles as long as you want.
 
PM me 'bout your microsquirt, thought they were history! Lots of GM Holley licensed pod type TBI's on 454's in Suburbans and trucks. IIRC microsquirt can fire these as a 2 bank or a batch fire. Could get cam position (if needed for sequential of MPFI)) from the electronic distributor with all but 1 of the reluctor teeth milled off and use EDIS-8 for ignition with a crank trigger wheel on the balancer. Easiest would be just a trigger wheel and EDIS-8.
 
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