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fuel injection to carb swap

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Old Mar 4, 2009 | 03:42 PM
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fuel injection to carb swap

ive got a 89 f150 with a 351 with efi and was wondering how to change it over to carb and what all i would need ne help
 
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Old Mar 4, 2009 | 03:43 PM
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Why do you want to change? RB
 
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Old Mar 4, 2009 | 03:45 PM
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im wnating to switch it to carburaterd im having to many problems with the fuel injection
 
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Old Mar 4, 2009 | 03:51 PM
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Carbs have there own troubles as well. But if thats what you want, my fist question is do you want to keep the stock fuel pumps or go mechanical? RB
 
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Old Mar 4, 2009 | 03:54 PM
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would like ot keep them but if its better to go mechanical then thats what ill do and i no carbs have there own problems there jsut a lot easier to work on and i can get a 650 cfm holley for free
 
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Old Mar 4, 2009 | 03:57 PM
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I'm guessing your truck has a frame mounted high pressure pump. You could just install a low pressure one. If it's an intank deal you can lower the pressure a couple different ways. RB
 
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Old Mar 4, 2009 | 04:03 PM
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yeah it has a high pressure frame mounted pump and 2 low pressures pumps on in each tank ok i know ill need a different intake but is that all ill need or will there be more then that
 
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Old Mar 4, 2009 | 04:19 PM
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https://www.ford-trucks.com/forums/8...carb-swap.html

any questions just pm me you will be SOOOO much more happy with a carb swap than the crappy fuel injection on these trucks and you can run as big of a cam as you want

it's easier to use a bypass regulator than mess with your fuel pumps
 
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Old Mar 4, 2009 | 04:24 PM
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im pretty sure the truck allready has a rv cam in it but dont no i no its the orignal motor in the truck and it only has 89xxx on it so im not gonna mess with it to much
 
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Old Mar 4, 2009 | 04:32 PM
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in my opinion rv cams are a waste of money since they are really low lift low duration.

you would be REALLY happy with that motor if you stuck a medium sized cam and headers on it along with an intake manifold and a 750 vac. secondary holley

that's basically what i have done to my 5.0 but i have a big cam ported heads portmatched to an edelbrock rpm air gap intake manifold with a little holley 570 vac. secondary sitting ontop, my carb is way too small but i can't justify shelling out the money for a new one
 
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Old Mar 4, 2009 | 04:42 PM
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the main reason i like the rv cam is for the torque and ive got headers on the truck and a set of 40 series flowmasters turn downed undre the cab with 3 inch exhaust
 
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Old Mar 4, 2009 | 05:03 PM
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if you want i can provide links for you for all the parts you will need, it's probably around a 500 dollar swap
 
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Old Mar 4, 2009 | 05:10 PM
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allright well the intake and carb im retty sure i can get free and i have fuel line but yeah ill take some links nethign that u might think will help
 
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Old Mar 4, 2009 | 05:27 PM
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alright well you NEED -6an fuel line since you are going to be taking it from the fuel filter use this fitting to go from the filter to -6an line Russell Performance 640850 - Russell Fuel Rail Fitting Adapters - summitracing.com and it's about 40lbs of unregulated pressure you use this line up to a bypass fuel pressure regulator Mallory 4309 - Mallory Fuel Pressure Regulators - summitracing.com that is the one i am using. Russell Performance 632090 - Russell ProFlex Hose - summitracing.com there is the fuel line you will need Summit SUM-220648 - Summit® AN to NPT Adapter Fittings - summitracing.com you will need 3 of these fittings for the fuel pressure regulator
Russell Performance 610020 - Russell Full Flow Hose Ends - summitracing.com this is the type of hose end you will need (you will need a few of these and some other ones that have angles in them) then you need to go to the local napa and pick up some 3/8ths hard line and bend it to the right dimentions to fit your truck and hook that to the bottom of the fuel pressure regulator and run that to your return line in the tank using this fitting Russell Performance 640860 - Russell Fuel Rail Fitting Adapters - summitracing.com to go from your tank to -6an line to the hard line

forgot to mention you need a new distributor and don't use an HEI dissy because they are too big for a smallblock ford you will need an offset aircleaner
http://store.summitracing.com/partde...5&autoview=sku -- distributor
you can use your stock ignition coil but since you are upgrading everything else i would upgrade it as well
http://store.summitracing.com/partde...5&autoview=sku

oh and you'll need adaptor fittings to go from -6an to your carb you can get them at any speedshop
 
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Old Mar 4, 2009 | 05:33 PM
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allrighty u lost me on that one im more of a bike and atv guy ive got like hundred foot of steel braided 3/8s fuel line and fittings and what if i jsut got a adjustable fuel pump would i still need the regulators
 
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