Im kinda planning ahead here but sometime this winter i want to freshen up my 5.0, I want it to last me another 100,000 miles at least. it only burns about a quart of oil every 3000 miles, so i think I will just throw in a new set of rings, and new bearings and stuff, I do have a little knock when the motor is cold, so i will take the crank to a machine shop and have them scope it out and grind it if need be.

now, ive been looking through summit, and jegs catalogs and rod bearings are listed as "each" so does that mean i need to buy 16 of them? and rings are all listed by size, so what size do i need and what kind do you guys recommend?

and this could be another thread entirely, but where do i start looking for speed density cams?

 

good idea needs overhaul ..... I need to know where my vin # on my 97 f-150 is located on my frame

 

On the cam, call Comp Cams and they will hook you up with what you need. They are very nice on the phone and have quite the knowledge on cams. Make sure you measure the cylinder bore when you take this apart. If the cylinder bore is out of spec, all the new rings in the world will not help you. I believe in Summit when you order bearings, they are sold as a set. Better yet, give Summit a call. They are easy to deal with on the phone. Good luck with the project.

 

yah, ive just been searching on the internet so far, and from what ive found a Crane Compucam 2021 looks like what I need.

 

Your machine shop will tell you what size bearings,pistons and rings you need after they inspect and prep the crank and block. You want the minimum undergrind and and overbore that you can get away with. With 100K on the engine that's probably .010 on the crank and either .010 or .020 on the pistons and rings but do not order parts until you have the measurements from your machinist.

 

sorry, i wasnt specific enough, i know about the undersize and oversize stuff, i was meaning like the rings in all the catalogs say 3/16 top 1/16 second and stuff like that. I want to know what the stock pistons take so i can kinda check out what is available for my application. standard bore is 4.00 right?

any other suggestions for stuff i should do while the motor is out?

 

I went with the 2021 cam and also had the heads mildly ported, no polishing and I got a lot more power than before, truck pulls much stronger than before. I would also recomend buying all matching component kits, like crane cam, lifters, etc. they seem to be matched and work better together than different brands mixed together.

 

I was just going to reuse the stock lifters, pushrods and rockers, should I replace them? I was thinking of porting the heads, ive ported 2 stroke dirtbikes before, but never anything cast iron, cant be too hard to clean things up a bit.

 

what do you guys think of this? http://store.summitracing.com/partde...2056255M%2D011 only thing is, my motor is a 93 (was replaced under factory warranty) and this kit says for 86-90, whats up with that?

 

I have always heard if you replace a lifter or cam, you always replace the other, something about different wear patterns. From my personal experience I swapped a cam in a 327 and didn't install new lifters and I wiped a lobe PKRWUD may be able to tell you what the truth really is.
I also believe that when you go into a motor replace everything, maybe not the rockers, and use matching components. Just my .02

 

dont i have hydraulic roller lifters? I think thats why you can get away without replacing them, they dont spin around like normal ones so they dont have that wear pattern.

 

Our trucks have flat tappet lifters, least mine does and its a 92'

 

Our trucks do have flat tappet cams in them. If you are going to replace the cam, you have the replace the lifters. A lifter gets a wear pattern on it when they are both new (the cam gets a wear pattern also). If you put the used lifters on a new cam, kiss that cam goodbye!!

 

What year is your truck? IIRC the 93-up trucks are roller, 92-down are flat tappet.

 

the truck is an 89, but the motor is a 92 (says so on the valve cover) what would i have to do to convert it to roller?