351W swap problems (please read)
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351W swap problems (please read)
Before everyone jumps down my throat about this being posted before, I have looked through many threads but they don't answer my questions and cant seem to dig up what I can do, so any insight would be appreciated!
I have a 93 F-150 5.0 with Speed Density EFI with an E40D behind it. I acquired a 351w that already has a mild cam in it. My problem is that the EGR system is totally gone and from what ive read and heard that the EGR for the MAF systems help with the timing.
Also, the Relector wheel on the back of the harmonic balancer is chipped because when the previous owner put it back together he put a water pump stud in the wrong place and ran it.
I've came to 2 solutions;
1: Find a donor EGR system, wiring harness, computer the works and run MAF
2: swap the transmission to a 5 speed, carb swap it and put an EFI carb on it.
Like I said any insight to get this engine swapped out soon would be greatly appreciated, thank you!
I have a 93 F-150 5.0 with Speed Density EFI with an E40D behind it. I acquired a 351w that already has a mild cam in it. My problem is that the EGR system is totally gone and from what ive read and heard that the EGR for the MAF systems help with the timing.
Also, the Relector wheel on the back of the harmonic balancer is chipped because when the previous owner put it back together he put a water pump stud in the wrong place and ran it.
I've came to 2 solutions;
1: Find a donor EGR system, wiring harness, computer the works and run MAF
2: swap the transmission to a 5 speed, carb swap it and put an EFI carb on it.
Like I said any insight to get this engine swapped out soon would be greatly appreciated, thank you!
Fleet Mechanic
Joined: Aug 2015
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From: Candy Mountain
Are you trying to convert to MAF as well as swap in the 351 into the 93? Or are you worried because the 351 has MAF equipment on it?
Why not just use the existing 93 hardware and harness? I believe everything should swap minus the intake manifold as the 302 is smaller, and you will want a 351 SD intake. The only difference between a SD intake and a MAF intake is the the SD will have a boss for an Air Intake Temperature Sensor. You would then just need a 351/E4OD computer. You will also have to modify or replace the y pipe as the 351 is wider.
Unless I am missing something...
Why not just use the existing 93 hardware and harness? I believe everything should swap minus the intake manifold as the 302 is smaller, and you will want a 351 SD intake. The only difference between a SD intake and a MAF intake is the the SD will have a boss for an Air Intake Temperature Sensor. You would then just need a 351/E4OD computer. You will also have to modify or replace the y pipe as the 351 is wider.
Unless I am missing something...
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Are you trying to convert to MAF as well as swap in the 351 into the 93? Or are you worried because the 351 has MAF equipment on it?
Why not just use the existing 93 hardware and harness? I believe everything should swap minus the intake manifold as the 302 is smaller, and you will want a 351 SD intake. The only difference between a SD intake and a MAF intake is the the SD will have a boss for an Air Intake Temperature Sensor. You would then just need a 351/E4OD computer. You will also have to modify or replace the y pipe as the 351 is wider.
Unless I am missing something...
Why not just use the existing 93 hardware and harness? I believe everything should swap minus the intake manifold as the 302 is smaller, and you will want a 351 SD intake. The only difference between a SD intake and a MAF intake is the the SD will have a boss for an Air Intake Temperature Sensor. You would then just need a 351/E4OD computer. You will also have to modify or replace the y pipe as the 351 is wider.
Unless I am missing something...
Fleet Mechanic
Joined: Aug 2015
Posts: 1,838
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From: Candy Mountain
Old Lunati Part number 21010 does not match the part number listed for the cam at the provided link.
Voodoo Hydraulic Flat Tappet Cam - Ford 351W & 302 H.O. 262/268 - Lunati Power
Voodoo Hydraulic Flat Tappet Cam - Ford 351W & 302 H.O. 262/268 - Lunati Power
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
The absence of EGR components won't prevent a motor from running so I'd suggest you ignore that for now. And that cam is more aggressive than is usually advised for SD but again.. it'll run, so I suggest you put the old 5.0 harness on the 5.8 and get it running. After that start collecting parts for an OBD1 MAF swap.. not the OBD2 version, it will be a lot easier to install.
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The absence of EGR components won't prevent a motor from running so I'd suggest you ignore that for now. And that cam is more aggressive than is usually advised for SD but again.. it'll run, so I suggest you put the old 5.0 harness on the 5.8 and get it running. After that start collecting parts for an OBD1 MAF swap.. not the OBD2 version, it will be a lot easier to install.
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From: Ottawa, Ontario
No MAF started back in '89 with the Mustangs and began appearing on trucks as early as '94.. all OBD1 systems. The reason that system is much easier to install is because it uses the same generation of PCM with the same 60pin connector so you just need to add wires for the MAF meter and sequential injection to the existing truck engine harness and then plug in a MAF PCM. If your truck has the E4OD trans that complicates things because the PCM also controls that trans so you have to use a specific truck PCM, but if you have a manual, AOD, or C6 trans then a Mustang PCM can be used and those are all supported by aftermarket tuners.
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Thats the problem, Ford didnt use MAF with the E40D until 96 when they switched to OBD2.
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Old Lunati Part number 21010 does not match the part number listed for the cam at the provided link.
Voodoo Hydraulic Flat Tappet Cam - Ford 351W & 302 H.O. 262/268 - Lunati Power
Voodoo Hydraulic Flat Tappet Cam - Ford 351W & 302 H.O. 262/268 - Lunati Power
Here is the specs for the cam.
Fleet Mechanic
Joined: Aug 2015
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From: Candy Mountain
Conanski - Will swapping to MAF make the cam that much more livable? Is it just the idle quality that will suffer on SD because of the vacuum signal?
Instead of sourcing the parts for the MAF swap, you could put a more appropriate cam in the engine before putting it in the truck and be done. Swapping to MAF could still be done down the road.
Instead of sourcing the parts for the MAF swap, you could put a more appropriate cam in the engine before putting it in the truck and be done. Swapping to MAF could still be done down the road.
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
The big thing is that MAF constantly measures airflow going into the motor and uses that to determine fueling requirements so it will better handle mods like a bigger cam. That's not to say it would make a big cam idle smoothly because it won't, but it will do a better job of delivering the right amount of fuel at any give rpm/load.