[charlie66]

Every crank thats been in this engine has beed magged before and after . The first crank lasted the longest, say about 4 years . That one for about 3 years it had 3.73's behind it and never saw over 25 psi at no more then 5800rpm. Then i turned it up to 30psi. Then tore it down for a refresh because was having blowbye issues , thought i burnt a piston but turned out nothing was wrong with it . Had the crank magged and came back fine. Still on the first crank here. Put it back together and got fuel injection now. But now i installed the cam in at 108 instead of 110. So now the compression was 5 psi higher when cranking it and the power band got lowered by a few rpms. At this point i decided to change gears to 3.50's . Drove it like this for another year and not too soon after that it started to knock . Tore the engine down and number 3 rod bearning got pounded . 3 rod jurnal was cracked as well as #3 main jurnal.. 2nd crank I started exploring higher boost levels. Went as high as 44 psi. That lasted about a year . At this point i figured it was the high boost doing the cracking . 3rd crank well i was still having bad lag so i decided to install the cam in on a 106 because Tim at bullet told me i could get away with it being that far advanced . So i did. It deffinitly helped but it was too explosive were power was coming in way too soon. I was playing around 1 time in third gear where i was at 30 mph and at very low rpm and floored it until the boost came in . Boost came in around 3200 all in by 3500. All it did was spin the tires like being on ice . So third gear with 3.50 rear gear and mickey 275 pros for a tire. Try doing that N/A , no way! Right after that it developed a knock. Took it apart and NOW the whole crank was cracked . Number 1 through 5 mains was cracked, as well as all the rod jurnals. So what i feel i learned was loading the engine with power too soon with a lower gear in the car was stressing the crank too much . So now i put the engine back together with the 4th crank and the cam in on a 110 like the card says to. Its been in the car now for almost 2 years now, ive been as high as 36 psi and so far everything seems fine. I check the oil filter alot to see if there filings and so far nothing. With the other 3 cranks when i checked the filter there was nothing but filings everwhere. So when you see filings at that magnitude ive learned to pull the motor and everytime time i had a spun or close to spun bearing that was pounded real bad. Always it was number 3 bearing too.. I gues thats where most of the load is?

Anyway, this is why i said what i said .. Just my experiance ... Take it for what you think it is...