No to the roller lifters in the 2.8 Ford V6. The 2.8 as well as the 2.9 has regular flat tappet lifters and regular rocker arms.
That would be the flat tappet cam in that engine.
typically no it should be hydraulic lifters unless someone has changed the cam and lifters in the engine.
flat
In most cases either will work. but you know how you are building your engine so you should know better then I do whats best. NO!!! if you have the serial # of the cam get ahold of comp cams and they can tell you if it is a roller or flat tappit cam they are totaly diffrent cams and WILL NOT INTERCHANGE LIFTERS
The camshaft of a 350 Chevrolet engine is held in place by a retaining plate or the lifters. The retention method depends on whether the cam is a roller or flat tappet design.
You do not want to change from a roller camshaft to a hydraulic flat tappet cam! that would be adding friction to you engine(bad plan). you can go from a flat tappet to a roller cam but no one offers a kit to erase technology, or subtract horsepower.
NOPE, FLAT TAPPET
If it has center hold-downs on the rocker covers, it's probably a roller cam.
Well....you have many choices for this block. You can run the standard flat tappet hydraulic lifter like those found in millions of GM passenger cars around the world. You can also use solid flat tappet lifters designed for many small block Chevrolets in the 60s. You also have the advantage of using GM factory roller lifters if you have the rest of the roller retainer setup from a junkyard motor. (You can buy the setup brand new as well.) If running factory roller, you will have to run a special timing chain set made for this application and shorter pushrods. I wish i had part #'s in front of me but there's nothing special for these blocks. I've built both flat tappet and roller motors with them. If you're lucky you might even get one with the fuel pump rod pre drilled and/or 4 bolt mains. That's something to look for if you want to run the mechanical fuel pump. Good luck!!
The 1990 will take flat hydraulic.
Yes, just make sure you get the correct length pushrods.