06-04-2007, 08:42 PM | #1 |
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1990 Grand Marquis 5.0 EFI motor - need input.
Okay guys.. here goes.. I need to know the difference between an HO and non-HO 5.0 EFI motor. Guy has a 1990 grand marquis with like 86k miles on it and says I can drive the car to see that its a good running motor. I know the intakes face the other side..(why?) but other than that looks exactly the same. Says if I come pull it out I can have the entire motor manifold to oil pan for $250.
So whats the difference? Would it have a forged bottom end being a 1990 motor? Where the heads just different? Should still be a roller cam motor? I don't see a 1990 302 being a non-roller. Can someone please tell me if buying this motor as a backup block/motor thats in running condition for $250 being a good deal? I want to use it for mock-up reasons for a project with my motor but also as a back-up block/motor incase mine fudges up. Thanks for any insight guys. I know its not an HO but is it a good deal? |
06-04-2007, 09:00 PM | #2 |
Bet I red light B4U
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Yes its a roller block heads are the same Should have the dual sump pan. In my book its worth the 250.
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06-05-2007, 07:57 AM | #3 |
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someone on mustangforums.com said the same thing about a double sump pan. Whats good about that? All I heard from mustang forums is that its the same motor but with a different cam. Put a b303 cam or even stock HO cam and it'd be just as much power.
Question though.. being a 1990 motor why did they put the intake on teh other side? Just because they did for that model of the motor/car? Also.. besides cam is it gonna be a forged bottom end being a 1990 car? I'm gonna try to talk the guy down to $200 since I have to pull it. |
06-05-2007, 08:08 AM | #4 |
Daddy x4 ...we're done
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That won't work. The firing order in a Non-HO 302 is different; the lobes would be hitting in the wrong order. You would have to get a custom ground cam.
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-Brian '86 Mustang GT Convertible '88 Mustang LX coupe '11 Odyssey TE '21 Insight Touring Last edited by Italian LX; 06-05-2007 at 08:11 AM. |
06-05-2007, 08:10 AM | #5 |
Daddy x4 ...we're done
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The way the intake is facing is only due to the body it came out of. The Lighting 351W are facing the opposite way too.
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-Brian '86 Mustang GT Convertible '88 Mustang LX coupe '11 Odyssey TE '21 Insight Touring |
06-05-2007, 08:13 AM | #6 |
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he made it sound like I could throw in a different cam and just change the firing order to a HO. Sure that isn't possible?
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06-05-2007, 08:16 AM | #7 |
Daddy x4 ...we're done
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Sure, you could do that... but he failed to remind you that you'd also have to change out the crank to one with the HO firing order.
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-Brian '86 Mustang GT Convertible '88 Mustang LX coupe '11 Odyssey TE '21 Insight Touring |
06-05-2007, 08:48 AM | #8 | |
3v's are slow
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Quote:
The crank? Cam swap is all you have to do to convert a non h.o to a h.o. Crankshaft doesn't care they are all the same.
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06-05-2007, 08:58 AM | #9 |
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Lol so whats the answer? I got mixed oppinions. So just a HO or upgraded like b303 cam and changing the firing order of the distributor would convert it to HO?
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06-05-2007, 09:17 AM | #10 | |
Daddy x4 ...we're done
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Quote:
Yes, all you would need to do is swap cams and rewire the plugs.
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-Brian '86 Mustang GT Convertible '88 Mustang LX coupe '11 Odyssey TE '21 Insight Touring |
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