91 F-150 320 Engine Knock
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91 F-150 320 Engine Knock
I have a 91 F-150 with 123000 miles on a 302 motor. I just purchased this truck fairly reasonable but it has a pretty bad knock at startup which gets better after a few minutes, but still knocks. Its not a little tick, its more like a clunking! The oil pressure gauge is towards the low side but does not fluctuate. Any suggestions on what this might be? Should I look for a replacement engine or fix this one? Is it reasonable to think I can repair for under $1000.00?
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Going into shop tomorrow - advised by my mechanic that I shouldnt drive it 600 miles pulling a boat, go figure! I still have no clue what it is, truck runs fine but knocks terribly on cold startup and when under load!
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Well, mechanic called today, I lost what he was saying after wrist pin and big bucks! So the secondary question now is - will any 5.0 302 fit even if from a mustang? I guess I will go with a used engine vs rebuild since I dont have a ton of money to spend!
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The mustang engine has a different camshaft oriented more for top end power where the truck engine cam is designed to make low end torque and midrange power. If you use a mustang block you will end up reusing alot of things from your trucks engine.
