what can i do????
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what can i do????
i need some information on changing an 87 302 EFI to an 85 carb 351W. am currently confused on what to do with fuel pump... can i eliminate high pressure fuel pump and hook up low pressure pump from tank to my mechanical pump??? and do i have to change the distributor? and any other valuable info during this swap?
Posting Guru
Joined: Nov 2009
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ok it would be a better idea to get a high quality pressure regulatorand keep the electric pump the distributors are the same for the 302 and 351 and since u arent going to be using the ecu u should prolly go with the one that has the vacuum advance....
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so how do i wire up the distributor which has three wires hanging off and the coil as well which has two? the efi engine had seven wires coming off the distributor and no color codes we can find, have tried multiple combinations but no luck thus far
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Close... the 5.8 uses a larger diameter oil pump driveshaft so the body at the base where it enters the block is also larger(0.515" vs 0.452") in diameter, total distributor height is about the same though I hesitate to say they are exactly the same.
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pedant
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From: Northfield, MI
Hmmmm...
I remember the oil pump drive difference. Wasn't there a difference between shaft length on carb vs EFI? Maybe that's what I was thinking of.
I know the housings were the same, I remember swapping shafts out of 351 distributors and putting them in 302 housings when doing swaps in Mustangs due to the remote TFI module location in the trucks.
Jay
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thanks that wiring diagram was great by the way. but since the ignition module is on the distributor on the 87 but can not be interchanged to the 85 do i need to go out and buy a module for it or is there a way i can get around it?
Posting Guru
Joined: Dec 2008
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From: Rusty, Maine
Unless you change the tank to a carb tank, you'll have to getto it and cap the retun line.
pedant
Joined: Jan 2008
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From: EXTREME southwest CT
In my opinion if you are putting in an '85 351 the simplest and most reliable thing to do is get a blue grommet DSII module and wire it as shown.
The distributor and coil on the 351 will work with this setup.
The distributor and coil on the 351 will work with this setup.
pedant
Joined: Jan 2008
Posts: 23,576
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From: EXTREME southwest CT
My mechanical fuel pump has a return line...
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
I will look it up online and see what the plumbing looks like.
Edit:Photos courtesy of NAPA.
351 under 8500 GVW
460 no GVW mentioned
