put EFI on 302W ?????
05-24-2007, 10:14 PM
#1
1st Gear Member
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Join Date: Jun 2005
Posts: 61
put EFI on 302W ?????
Hi everyone
Got a little problem here
I have a 1989 mustang Lx 5.0L EFI, T5 . 2 days ago , my engine died . My damper pulley disappeared and I see a big angle at the crankshaft . Now I really need to find one other block . I know a guy who could sell me a 1985 grand marquis 5.0 (non-HO) engine for 200$ . Would it be possible to fit a 302W with its original heads , cank , piston and rods and fit my EFi intake on it ? I heard the non HO has a different firing order ....is it right , if so , what can I do?
Got a little problem here
I have a 1989 mustang Lx 5.0L EFI, T5 . 2 days ago , my engine died . My damper pulley disappeared and I see a big angle at the crankshaft . Now I really need to find one other block . I know a guy who could sell me a 1985 grand marquis 5.0 (non-HO) engine for 200$ . Would it be possible to fit a 302W with its original heads , cank , piston and rods and fit my EFi intake on it ? I heard the non HO has a different firing order ....is it right , if so , what can I do?
05-24-2007, 10:56 PM
#3
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Join Date: Apr 2007
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Posts: 155
RE: put EFI on 302W ?????
NO
The HO firing order is different.
A non-HO firing order cam will NOT work with an HO ecu.
The fuel injectors will be firing at the wrong time.
If you try to 'move' the injector harnesses to correct the problem, then the O2's will be reading bad data.
If you do pick up this motor, you will want to change out the cam for an HO firing order...
(good excuse for a performance upgrade actually)
jason
The HO firing order is different.
A non-HO firing order cam will NOT work with an HO ecu.
The fuel injectors will be firing at the wrong time.
If you try to 'move' the injector harnesses to correct the problem, then the O2's will be reading bad data.
If you do pick up this motor, you will want to change out the cam for an HO firing order...
(good excuse for a performance upgrade actually)
jason
05-24-2007, 11:01 PM
#6
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Join Date: Dec 2006
Location: Citrus County, FL
Posts: 8,007
RE: put EFI on 302W ?????
just plop the crank from the marquis motor in there and your good to go, polish the crank journals with some fine emory cloth and slap that puppy in there with new bearings.
question is, wouldnt it be cheaper to just buy a reground crank from the autoparts store and then you know the clearances are correct?
or is the block itself really toast?
if it is, you'll have to swap cams to retain your HO firing order, but the 85 may not be setup for roller cams. this is a good time to drop 80 bucks for a 351w flat tappet summit cam, the smallest one they make will work with stock springs and will still be better than stock. also, your E7 heads are better than the D8OE/E5AE heads that are probably on the marquis motor
question is, wouldnt it be cheaper to just buy a reground crank from the autoparts store and then you know the clearances are correct?
or is the block itself really toast?
if it is, you'll have to swap cams to retain your HO firing order, but the 85 may not be setup for roller cams. this is a good time to drop 80 bucks for a 351w flat tappet summit cam, the smallest one they make will work with stock springs and will still be better than stock. also, your E7 heads are better than the D8OE/E5AE heads that are probably on the marquis motor
05-24-2007, 11:02 PM
#7
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Thread Starter
Join Date: Jun 2005
Posts: 61
RE: put EFI on 302W ?????
Ok . So , the block is the same right ? If I only use the block of the grand marquis , Use my heads , my cam , my intakes and my EFI , It would be the same thing than my previous setting ? Am I wrong?
05-24-2007, 11:11 PM
#9
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Join Date: Jun 2005
Posts: 61
RE: put EFI on 302W ?????
Ok , If it's setup for rollercam , I can use my own camshaft . If not , you suggest me to buy a 351w flat tappet summit cam ? I live in canada , so Summit is far from my home , what would you suggest me from compcam ? I don't know really much on camshaft 
05-24-2007, 11:34 PM
#10
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Join Date: Apr 2007
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RE: put EFI on 302W ?????
ORIGINAL: Evil_F
all you have to do is swap which injector goes where and same goes for the spark plug wires.
all you have to do is swap which injector goes where and same goes for the spark plug wires.
That will not work.
If you would like me to elaborate as to why, just ask. But it is kinda complicated...
jason