Ok I took my old block apart because it was reading no oil pressure at idle and i thought i spun a bearing but when i hit the gas the oil pressure would go up to almost normal. It would also knock at low rpm with the low pressure. I took the whole thing apart and saw that I had split the webbing across the main bolt threads all the way down the block on caps 2, 3, and 4. So I got a used shortblock from an 01 explorer with 68k miles on it, and I Canton racing main cap girdle kit with race pan and windage tray to try to avoid this again.
So I get the motor all built, it starts right up on first try, but it sounded like there was a small knock or tick, I just figured it was the lifters filling up with oil and it went away. Well I drove it a few nights and it was FAST FAST FAST just like it used to be. Then tonight, we were out beatin it and when we came to a stop at idle the pressure dropped to 5 psi and it started knocking again!!! I couldnt believe it! Same thing as before when I hit gas the pressure went up and it didnt knock! So I got it home and now im like wtf should I do because this is the second block that has cracked on me and I only had it in the car not even a week! I was told and thought that the stock block could hold up to 500 hp?! Is this wrong? I would say I have like 375 at flywheel with my mods and I do beat on it pretty hard but I have msd rev limiter set at 6 which is lower than stock 6250. Do I need a 4 bolt main block or aluminum block or some ungodly costing thing to handle me when im taking my stress out on some rice?
So I get the motor all built, it starts right up on first try, but it sounded like there was a small knock or tick, I just figured it was the lifters filling up with oil and it went away. Well I drove it a few nights and it was FAST FAST FAST just like it used to be. Then tonight, we were out beatin it and when we came to a stop at idle the pressure dropped to 5 psi and it started knocking again!!! I couldnt believe it! Same thing as before when I hit gas the pressure went up and it didnt knock! So I got it home and now im like wtf should I do because this is the second block that has cracked on me and I only had it in the car not even a week! I was told and thought that the stock block could hold up to 500 hp?! Is this wrong? I would say I have like 375 at flywheel with my mods and I do beat on it pretty hard but I have msd rev limiter set at 6 which is lower than stock 6250. Do I need a 4 bolt main block or aluminum block or some ungodly costing thing to handle me when im taking my stress out on some rice?