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Message: <blockquote data-quote="A-Aron" data-source="post: 25375" data-attributes="member: 10675"><p>Ported TB was just for throttle response and idle. It's a 5.3 bored .30 over with 4.8 flat top pistons with a truck Norris cam upgraded Michigan motorsports valve train. Less than 3k miles on engine. Don't see why that was important only dynoed 315 HP and 320 tq on motor. I gap the rings for 150 nitrous shot top ring at .022 and matched the second ring at .022. like the post said truck drove fine for about 4 days after torque converter swap then 3 days post tune adjustment pump gave up the ghost. I am not looking to blame anyone, I am just trying to learn from any mistakes. I built the engine so I know it's good to go, the trans after opening it up seems to have been rebuilt before( REMEMBER THE TRUCK HAS 289000 MILES) I REBUILT THE REAR END WITH A Yukon LSD AND 4:11 GEARS AND UPGRADED THE CLUTCHES INSIDE THE DIF., SO I KNOW That's GOOD TO GO. the shift kit was installed by me when the truck was a v6.... Same tuner tuned line pressure and shift points post rear end rebuild and tire size change( 17 to 20). I am just wondering if the damage was caused by loss of fluid when ever the line blew off, or did it over heat the pump causing it to crack then over those 3 days give out??? Just thought I would get your guys thoughts</p></blockquote><p></p>