My old red truck (6.0) was lathargic until I switched the cam. (and put on the blower) I had to pull the oil pump for the cam change. I did not pull the pan to remove the pick-up tube bolts, I chose to fight it for over an hour putting it back together. When I was finished I had good oil pressure at idle, and plenty of pressure while driving, but would fall off to nothing after it warmed up at idle. Finally, pulled the pan and replaced the o-ring on the pick-up tube to cure the issue. I know it is a longshot, but still.. The oil pans and covers have the reuseable gaskets, I wasted too much time being hard-headed about pulling the pan. It was my first look at the new design.
There is a guy in Orlando, FL. that has a good bit of experience hot rodding the new generation of small blocks. If you are used to the camshaft specs on a old-school SBC, the numbers on the Gen III roller motors are be-dazzling, he is a good source for what works as he has tried them all.
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1996 -19' NV Flats 115 Mercury 4-stroke
1983 -20' Wellcraft Center Console 250 XS
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