Hola FBuds!!!

I'm in the market for a Oil Pump Primer Tool. I checked $ummit and they clearly say "Will Not Fit LT1/LT4 engines." If a adapter is needed I couldn't find one anywhere. Was just curious if someone could give me a fresh valid link to one as pulling a search has great information but corrupted invalid links as to where to purchase. $ummit is preferred but if I have to venture out more then happy to.


You guys rock!

Thanks!

-Ruben F.

 

You can use a cut off screw driver.

 

You won't get any pressure if the "tool" has no collar on it.

A normal SBC tool with a collar will work on an LT1. I would imagine they say it will not work, because you have to remove the intake to use it.

 

Damn! Wish I'd known that. I've been using a regular priming tool on LT1 motors for over ten years. I wasn't aware that it couldn't be done.

Here are the parameters:

Obviously, you can't use it with the manifold on the engine.

You absolutely need a priming tool with the "spool" that directs the oil from the main bearings to the lifter galleys.

Remove the flat disc that is designed to fit into the distributor hole on a traditional manifold because it gets in the way. On my priming tool the disc is held on the shaft with a snap ring . I simply take it off when I need to prime an LT1.

Unbolt the oil pump drive stub shaft that bolts inside the lifter valley and remove it. Insert the priming tool, spin it with a drill motor.

If your motor is already in the car, about the only way to attach a drill motor to the priming rod is through the use of a 90° unit, since access is obviously limited. We primed a motor in the car recently and we had great success using 19.5 volt, battery powered 90° Craftsman drill motor. Note: If you are convinced that you need a high-volume or high-pressure pump, you might need two batteries or at least make sure that your battery is fully charged when you begin. (It's a great demonstration of the amount of power that is consumed by spinning the oil pump faster than it needs to go.) We had oil all the way to the top of the motor within three minutes using the 90° unit.

When oil is flowing through the pushrods, put the oil pump drive shaft back in the motor and tighten the bolt to 13 ft. lbs. Use Loctite if you wish but don't over-tighten the bolt. Apparently, there is a finite number of those plastic housings in the world and they're going the way of the dinosaurs due to flimsy design and the tendency of gear heads to use the "a little more should be just right" method of applying torque.

There may be other ways to pre-oil an LT1 but this method works for me.

c

 

That's exactly what I did as well. I also turned the crank slowly after the oil was flowing. Sucks for someone who just torqued down their intake manifold though.

 

Is it possible to use a pressurized container full of oil that feeds into the oil pressure sensor hole?

 

Yes, an oil accumulator is another way to prime the engine.

 

I've seen that method used to prime an LSx motor but I've never looked into getting the equipment to do it.