1994Vmax

iTrader: (4)

Yeah which is honestly meaningless in my opinion like how I do it. The filter boss is just the pump discharge pressure as well... but that means little to what pressure is actually reaching the sending unit on a gen iv with the secondary relief valve downstream of that point between the oil filter and the sending unit.

1FastBrick

iTrader: (17)

Your only other option would be the rear port. It's passage is inline with the oil pressure sending unit.

1994Vmax

iTrader: (4)

That's a gen 3 oiling system missing the secondary relief valve downstream of the filter. It's just as easy to pull pressure from the sending units port and eliminate any error.

1FastBrick

iTrader: (17)

It's still basically the same. That rear port would be downstream of the relieve in the pan.

1994Vmax

iTrader: (4)

It's honestly going to be easier to do the sending unit considering it's in a truck and not on a stand lol. I'm trying to eliminate error and not introduce more... I mean according to all your guys methods my sending unit on my truck is bad... well I swapped it and it reads exactly the same. That mean both are bad? I really doubt it. If it was 4 or 5 pounds a person could probably not care. But even my own truck is closer to 20 psi of error so something is going on.

Jonblarc7

I have a TSP 218/226 113 LSA in my L86 right now with stock exhaust. You can’t really here it lope or anything. It pretty much sounds like yours in the video. When I first put the truck back together I didn’t tighten one of the exhaust manifolds enough and had a small exhaust leak. You could here it lope then. I’m putting a magnaflow muffler next week. I’m sure I will hear the cam then.

01SilveradoJakee

First off, you can never ever tell a cam by the way it sounds. Most tuners and people have personal preference on sound. I’ve used that cam in a few trucks and I’ve heard it from extreme chop to sounds like a high idle stock truck, so going of sound never works.

second, 2 ways to tell. One is the hard way is either pull it apart and check the cam itself, or dyno test it that cam should easily hit 6000 -6700 depending on the lift of the cam. If it’s a low lift (around .550) it should be more lower in the rpm band and if it’s a .600 lift cam it will rev out further. Also the LSA makes a difference on when the cam makes power and doesn’t.

one good way to avoid all this is either do the work yourself or know a good reliable shop to do it with proof. People nowadays aren’t the same as they use to.