67goatman455

iTrader: (14)

My Oil pump went out yesterday and since it is my DD i need to know where to buy theses parts ASAP in hope of getting it going again this weekend. I am looking into the melling M155 pump, or 10554 pump with the GM white spring and the Melling drive shaft. I have tried looking at summit for theses parts but to no success. Help would be GREATLY appriciated. Thanks

96capricemgr

iTrader: (1)

Why do you think the oil pump went out? That would be an extremely rare freak failure.

What are the symptoms.

67goatman455

iTrader: (14)

I started the car up, it had good pressure for about 2 seconds then the pressure dropped to 0. Was a quart low, so i filled it back up.pulled off the valve cover, started it and there wasn't any oil coming out of the pushrods.

96capricemgr

iTrader: (1)

There is a plastic coupler on the oil pump driveshaft that would be FAR more likely than the pump itself.
That said, you have to pull the pump to change it.

67goatman455

iTrader: (14)

ok, well i'm guessing its the plastic coupler. I DO have to change it from the bottom? can i pull the intake and replace it with the melling hardened shaft from the top? I have only found one thread on this topic and i'm pretty sure it said you cannot

RamAir95TA

iTrader: (2)

I don't know how you're having trouble finding the 10554 pump from Summit. Just type in "10554" in the search box. Yes, it's that simple.

67goatman455

iTrader: (14)

i found the pump and driveshaft i need i just have another question and didn't want to start another thread. I'm wanting to know if i can replace the driveshaft by taking the intake off or not, or if i have to go from the bottom. Ill be using the melling steel coupler and new shaft.

xx_ED_xx

iTrader: (17)

no you change it while changing the oil pump. remove oil pan. remove 5/8 head bolt holding oil pump on and pump pick up and shaft should come out together. Is this a rebuilt motor??? Are you sure thats the problem? if a oil galley plug came out or you spun a cam bearing it will do the same thing

67goatman455

iTrader: (14)

No the engine is in the car it only has 105k miles on it. It went to 0 oil pressure the other day and i'm expecting the plastic sleeve on the oil pump drive shaft broke, so i was hoping i could change it by removing the intake instead of dropping the pan which would involve alot more work.

67goatman455

iTrader: (14)

well.....whats the chances that the drive gear is stripped or broken?

SS Junk

even if a bearing spins there is usually a trace of pressure on the gauge. i would suspect the plastic coupler more than anything at this point.

67goatman455

iTrader: (14)

well tore the car apart last night. nothing wrong in the bottom end, so i put a new pump and metal drive shaft in. there were good size chunks in the pan so i'm expecting the drive gear now. Ill be pulling the intake soon. Can i get a new gear at OReilley's? part number maybe? thanks

96capricemgr

iTrader: (1)

Sorry to hear it is worse than just the coupler.

Far as I know the drive under the intake is a dealer part. Heron Performance makes a billet one too. Other than that I have never seen an aftermarket one.

67goatman455

iTrader: (14)

It was definitely the gear. it was chewed up bad.

94Aquaformula

iTrader: (28)

where did you get a new gear?