Oil pump install

[Hollowdweller]

Got the motor back today, fixing to start bolting stuff up. I was going to do a “motor build” thread but figured I’d get better results with individual threads..?
Installing a Melling 340HV oil pump, it came with a spring 60psi bypass spring. Do I keep the factory installed 80 or switch to the 60? I have no clue what this spring does

 

[msvela448]

Keep the 80... 3v 4.6 motors are very dependent on good oil pressure.

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[86GT351]

What did your Engine Builder suggest?

 

[skwerl]

Great pumps, the install is the worst part unless you have the engine out already. I put one in my F350 (5.4 3v) a year and a half ago. The timing chain guide broke and I also had to pull the heads, so the engine came out. Once you pull it all the other work is a breeze.

 

[JC SSP]

SWEET mobile engine hoist...

 

[Hollowdweller]

What did your Engine Builder suggest?

I didn’t get to talk to him as much as I wanted. Was trying to beat the rain to get motor home. Didn’t really want to bother him with issues he’s not getting paid for either I guess. I get shops griping about that. Have a TON of tuning questions but hate to bother Lito with all of them…..no moneys exchanged hands bcz my cars so far from hooking a handheld to

 

[Hollowdweller]

Build sheet

 

[Hollowdweller]

Need to quit copy/pasting pics lol