Hey T-bird4vr would a new bore job depend on the condition of the block ? or it this a must when rebuilding the block and put new pistons ??
I'm not T-bird4vr but maybe I can help you. Boring depends on the condition of the block so your machinist will have to check that before you will know.
I have heard about the BHJ balance, but i also heard its a lot of work to get one in place... so i am not sure about it.
The balancer is not a hard job if you have the engine out for rebuild anyway. Yes you will have to have the balancer honed to fit your crank properly.
When you say "total seal rings" do you mean put all new rings on the pistons or are you referring to something else ???
Total seal rings are a brand of gapless ring sets. The 2nd compression ring is composed of 2 rings in the same groove and you orientate the 2 ring end gaps 180 deg out of phase from each other in effect creating a gapless compression ring. These ringsets cut way down on the compression leakdown thus keeping cylinder pressures up and cutting way down on cylinder pressure leakdown through the ring gap. Very good rings! I highly recomend them.
I wanted to do an "O-ring" on the heads, would it be good to put those 4.2L mls gaskets you are using, and what are the advantages ??? ....
Foreget O ringing. I'm not to sure about those 4.2 mls gaskets as being any better than the Felpro's. My brother inlaws F150 with the 4.2 which has those mls HG's on it are blown with 57,000 miles on them, so I'm not convinced there any better but they might be.
Someone told me that i could get away with using the stock 30 LBS injectors with the ported heads but that i would need either a 190 or a 255 fuel pump, what do you think ??? The injectors will be fine until you really start stepping up the motor. The fuel pump is a good idea that way you're ready for any other mods when the time comes.
Do you think it would be wise to have the heads ported and polished to see what type of flow numbers i get before having a custom cam grinded ???
That would help but its not mandantory