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Originally Posted by Pampered-Z
I would do anything until you get some data logged and determine exactly what is going on. Â*Why put in a FP without know if that is the problem? Â*There are enough people running hotcams in 350 TPIs with the stock pump.
Where do you have your fuel pressure set? Â*and what is it doing? Â*Is it dropping low that you think is why it's going lean?
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i talked to dan on AIM and he said he can only get 44psi with the AFPR screw bottomed out, he is also still on a stock pump with a beefed up motor.
GM undersized the stock pumps in the thirdgens pretty bad, it isn't uncommon to see pressure bleed of with a stock engine, much less one with a healthy head and cam combo in it.
later
tim