4.9 Rebuild.
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New User
Joined: Nov 2014
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From: Wicomico Church VA
4.9 Rebuild.
I'm looking at doing a frame swap on my 1990 F-150 with the straight 6 and thought that since I would have to remove the engine anyway and most of the gaskets are shot and it runs rough. How feasible would it be for me to rebuild the engine? Can it be as simple as swapping out the old parts or does the job require specialized tools and training?
Lead Driver
Joined: Jul 2009
Posts: 6,477
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From: Sheffield, AL
It would be best if you could work with someone on your initial rebuild. List where you live and the moderator may connect you to the nearest FTE chapter so you can find someone near to you.
New User
Joined: Apr 2015
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300 6cyl - 4.9l
The 300 6cyl 4.9l is a very good engine. Rebuild is easy and cheap, in comparison to other builds. Only special tool needed is cam bearings remove and install tool. Otherwise you can do this fairly easy.
Lead Driver
Joined: Jul 2009
Posts: 6,477
Likes: 19
From: Sheffield, AL
Hey, Shermanator213!
I see that you listed your address. Did anyone contact you? If not, here is a link to the Virginia chapter. I hope it will help!
Virginia Chapter - Ford Truck Enthusiasts Forums
I see that you listed your address. Did anyone contact you? If not, here is a link to the Virginia chapter. I hope it will help!
Virginia Chapter - Ford Truck Enthusiasts Forums
Postmaster
Joined: Mar 2005
Posts: 2,949
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From: Earth
Define rebuild the engine. I define it as machining the block for new pistons, grinding the crank and rod journals, etc. That requires very expensive specialized tools.
Just going through and replacing gaskets and exterior parts like the balancer can be done with hand tools and things that can be leased/borrowed from parts houses.
Just going through and replacing gaskets and exterior parts like the balancer can be done with hand tools and things that can be leased/borrowed from parts houses.
Thread Starter
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New User
Joined: Nov 2014
Posts: 16
Likes: 0
From: Wicomico Church VA
Define rebuild the engine. I define it as machining the block for new pistons, grinding the crank and rod journals, etc. That requires very expensive specialized tools.
Just going through and replacing gaskets and exterior parts like the balancer can be done with hand tools and things that can be leased/borrowed from parts houses.
Just going through and replacing gaskets and exterior parts like the balancer can be done with hand tools and things that can be leased/borrowed from parts houses.
Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
New pistons generally require boring the block depending on how worn the cylinders are. Machine shops have a tool to press the piston pins in and out as well. Plus a piston ring compressor. You're pretty much either committing to a full rebuild or leaving the crank/rods/pistons intact.
A full valve job usually involves machining the surface flush in addition to cutting new seats, cleaning, grinding the valves, etc. It can in theory be done at home but does require some special tool. On balance it's probably cost/time effective to have a shop do it.
A full valve job usually involves machining the surface flush in addition to cutting new seats, cleaning, grinding the valves, etc. It can in theory be done at home but does require some special tool. On balance it's probably cost/time effective to have a shop do it.
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