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I have a newly rebuilt 400, sonic cleaned and magnafluxed, bore and hone, ground crank, new cam, high compression pistons, new timing set, etc. I was told it was in a truck for a few days then pulled. Every indication points to this being true.
Only thing I've noticed that seems off are the cam bearings. These have been installed poorly, right? No reason they should be sticking out. The Cam spins but requires a little force to get it going. The crank on the other hand can spin if you blow on it hard enough.
You're right....those cam berrins are pooched. Mebbe it's the picture quality but the cam doesn't look too healthy, either.....the oil appears to have water in it, too.
Yank the cam and replace the berrins...they run from a smaller diameter in the back to a larger one in the front. Mic the cam journals after it's yanked, write 'em down and compare them to specs.
Thanks guys, I'll pull the crank and put a dial indicator on the cam and see if I'm getting constant lift on the lobes. The motor should have less than 1000 mile so I hope the cam isn't shot.
Is there a good place to rent a cam bearing installer/puller? I would like to avoid paying $130 for a tool or loading this block back into the truck.
If you are going that far into the engine you might want to consider Tim Meyer's oiling system mods: Oiling System Mod's - ???Gary's Garagemahal. You would also need the cam bearings from him, but if you are replacing the cam bearings anyway...
As for the tool, check with your local parts store. Some rent tools with a down payment.
Might do the mod, I wasn't planning on pulling the crank/cam/timing set but now with this... I bet I can fixture this thing up to the Bridgeport or the Fadal.
You might want to check and see if they are round. If so, run a hone through them?
ill check them with the bore guage. I assumed they are round since they were just bored and honed and I can still see all the cross hatching but better safe than sorry, right?
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