Need a GM 5.3L replacement engine, who do you recommend?

The op senders are notorious for failure. Ive probably put in 50 or 60 this year. I wish I were flat rate with them. Books out something crazy like 4 hours, its a 10 minute job. Seems like when temps drop we see a surge in them. Screens are usually dirty but not enough to cause issue.

 

Yeah right some print call it a 4.7 others call it 4.8, in any case it's a great motor.

 

GM 4.great V8

 

Yeah mine had this problem,was sucking air
Some people say you need to take the front cover off, you don't, you can get to the pickup and change the seal by dropping the pan, that's pretty easy if it's 2 wheel drive.

 

Actually, it was in the 2010 trucks that GM introduced VVT...I know because I had to decide whether to keep it or remove it when installing a new cam.

https://gmauthority.com/blog/2009/1...le-valve-timing-in-its-truck-small-block-v-8/

 

Yep, a few guys got hosed by the dreaded o-ring on the oil pick up tube. They did revise that o-ring which I did replace with the new material rubber when I pulled the front cover. (2 wheel drive)
I didn't need to drop the oil pan but it may be the easier option. There is 1 bolt on the pan/front cover that will be the head scratcher for most mechanics. I unscrewed it then wrapped fishing line
around it...tied a knot then unscrewed it till it drops into the pan then pull it up with the fishing line

 

We all know the Bandit TA had the 6.6 liter 400 ci engine (TA 6.6) I recently saw a show where the Buick 400 was a 6.5 liter.

220, 221

 

My 05 Silverado with 170k+ the oil pressure is a touch above 40psi at idle (500 rpm) and a touch under 60psi at 2000 rpm.

 

Love your wife? Drop a LT4 in that rig and prove it. She’ll be thrilled…or not.

I got you horsepower honey, 650 of them.

 

Mine has never been that high on the gauge.

 

A coworker's Silverado had oil pressure on the low end and he replaced the oring other have mentioned. The pressures went up similar to what mine runs at.

 

I had to replace the crappy gauges on mine,
Knowed problem with that vehicle.

Besides the broken exhaust bolts.

 

Oil pressure is fine. I wouldn’t touch it.

Run the trans until you drop a gear (usually reverse). When mine goes, I’ll probably have Precision Transmission in Amarillo do mine.

Rotella 15w/40 is what I run and was recommended by the shop that built my 5.3.

 

My nephews dad had a 2500hp Steve Morris engine in his Nova. He used it for Hot Rod Drag Week. Thing had so much power, he snapped a blower belt on every pass. Now he's switched to a twin turbo, not sure if its still SM.

 

LS swap. Turbo that bish.

 

A 5.3 IS an LS.

 

That is a sign it needs a new Oil pickup oring. They suck air as they get older and cause low oil pressure and Aereated oil, that causes lifter noise. Will usually clatter for 15-20 seconds on cold start as it struggles to prime the pump.

 

That's exactly what mine did,new o ring,no more lifter noise,oil pressure came up.

 

yes and pro tip a 2" 5/16 bolt will thread in and pull that shitty screen once the sender is out. than thread in a mechanical gage