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  #1  
Old 08-12-2010, 05:17 PM
Amv f250 Amv f250 is offline
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302 V8 ENGINE KNOCK

hello,

im new to the forum and ford trucks

i have a 1990 f250 5.0L

when i start it it knocks but as it idles it goes away, but the second i accelorate it knocks like crazy, when i crawled under her, there was a lot of oil on my ehaust at the bellhousing

can anyone provide me any insight please


i want to get my truck up asap

AARON
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  #2  
Old 08-12-2010, 06:27 PM
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It sounds like a classic case of a spun bearing to me - possible even a rod tossed out of it. I personally would be looking for a new engine.
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Old 08-12-2010, 06:36 PM
Amv f250 Amv f250 is offline
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first off, i have read some of your posts already, thx for the reply,

2 things

1, not rich lol my junker said 302, with parts and labour warrenty is $988 canadian + tax,

2, i want my truck for daily, fuel, and the odd tow, it needs to be very fuel efficiant on a budget, i wanted an i6 if i had to re do my engine, what would u reccomend

my f250 is on 35's, with a 6 inch skyjacker

again i appreciate the reply
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Old 08-12-2010, 08:46 PM
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So your truck is an F-250 with a 6 inch lift and 35's?!? IMHO, a 5.0L is not a great engine for a truck that is going to be used for a truck, but it's definitely nowhere near enough motor for that kind of a truck. It's not surprising that it's starting to hammer. A 4.9L 6 cylinder might be OK, but I actually think you'd get better power and fuel economy with a bigger engine. A 5.8L wouldn't have to spin as fast or work as hard to move that much truck around, plus it can bolt in place of the 5.0L. The 6 cylinder would require changing the riveted-on frame mounts. You'll have to change the computer regardless of what engine you go with if you go back in with anything besides a 5.0L, but at least the wiring harness itself would be the same for a 5.8L. Unless the truck is particularly nice or you plan to personally put another 100K miles on it, I wouldn't be looking at a new or remanufactured engine. For the $1000 you're looking at spending on that, you could find an entire truck with a good 4.9L or a 5.8L and have everything you need to do the swap.
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Old 08-13-2010, 07:52 AM
Amv f250 Amv f250 is offline
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u rock

i called my junker $450 for a 351 windsor (my truck is a 90) the engine is from a 95,

my issue is i have a 90 (tranny auto paired to my xfercase) will that all bolt up to the 351 windsor, and can i use the 95 351??


this is starting to scare me

blueoval thx again
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Old 08-13-2010, 05:01 PM
Amv f250 Amv f250 is offline
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some one want to add on this,
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Old 08-14-2010, 03:26 PM
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There's no reason to be scared of the swap. It's a piece of cake. The '95 351W will be an excellent engine for your truck and I think you'll be very happy with it. It will bolt right up to your engine mounts and transmission. You may need to use the accessory mounting brackets for the 351W, though. Make sure that they get left on as part of the deal when you buy it. ONE EXCEPTION - You cannot use the flywheel/flexplate from the 5.0L on the 5.8L. It will bolt up but it won't be balanced correctly and the engine will vibrate. You'll need to use a 28 oz. imbalance 164 tooth flexplate from a 351W or pre-'82 302. That's the only part that won't work. You're also going to need a new computer. Get one from an '87-'91 truck with a 5.8L/351W. It will swap in place of yours and work fine with your existing wiring harness and the new engine.
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Old 08-14-2010, 06:18 PM
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u and conanski are kings serious,, 164tooth is what i needed to know now i need to know if my tranny is a e40d and im set woot im pleased !!!
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Old 08-16-2010, 06:39 PM
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so i do have a E40D

also i have the oilpan to injectors and throttle full 351 windsr no wiring, but my 302 has the harness, now what computer u mean the ecu?

and i have the flywheel now also what about the distributor cap?
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Old 08-16-2010, 08:21 PM
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Yes, he meant the ECU.
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Old 08-17-2010, 08:35 PM
Amv f250 Amv f250 is offline
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thx guys im very happy to build my trucck
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Old 08-20-2010, 09:18 PM
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If your truck currently has an E4OD, then you're going to need a computer out of truck that had a 351W/5.8L and an E4OD to get both the engine and transmission to work right. Send me a PM if you have trouble finding one. I happen to have a spare sitting around here for just that very combination and I know it works. It came out of a '90 E-250 Econoline van. I can make you a deal on it.
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Old 08-20-2010, 09:18 PM
 
 
 
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Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)

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