I am upgrading 289 , 2v auto. I have hedman headers, comp 270 cam(?), badger cast pistons, edelbrock intake, edelbrock 600 cfm carb. Basically a budget upgrade to 300 hp.
Do I need to upgrade the crank mains? stock, solid or hydraulic lifters?
As for the question about mains, not for just 300h.p. and as to the lifters best lifters for your engine would be the ones in a cam and lifter kit. So if you have the cam call comp and ask for the lifters to go with it. If you don't have the cam yet then order the cam and lifter kit.
just my 2 cents bro
Valve springs are also something to consider and are also available in cam kits. The springs that match the camshaft is something important to consider.
For a street car, use hydraulic lifters, again to match the camshaft and a new set of pushrods, they don't cost much. There has been a lot of talk in the magazines about the quality of the hydraulic lifters on the market. There are several brands (not name brands) that are made offshore and have poor machining and the metal quality is questionable. Buy some good ones to avoid problems.
The bottom end should be OK if there isn't too much wear on the bearings. If changing the bearings then that is about all you need to do. The crank and rods will handle the HP you're shooting for, but if you are completely tearing the engine down, I'd replace the connecting rod bolts with some ARP bolts. This goes for the main cap bolts and head bolts too. If you can't afford all of the bolts, concentrate on getting the rod bolts, they take the most punishment.
It sounds like a good combo, only two drawbacks for a daily driver...the high compression forcing you to use premium fuel$$$$$ and the solid lifter camshaft that will require periodic lash adjustments.
I'd agree with Mustang Nazi in just getting a new roller block to reach your goal of 300 HP. If you have ever had an engine with solid lifters as a DD you would know how often then need attention. Would also allow the use of lower cost fuel. Depending on the year of the 351 heads, then you don't gain you anything at all. Like Greek says, replace rod bolts by all means what ever, very cheap insurance.