ALright, i have a 90 firebird, 305 TBI. I burn about 1-2 quarts of oil a week! But here's the thing. There are no visible signs of an oil leak on the block. Under the hood is clean, and undercarriage is not all messy. What is going on? ALso, the car has 160,000 miles on it. Is this normal for an engine with this kind of mileage. Is there anything i can do to solve this? I'm getting a new remanufactured 305 in may, should i just not worry about fixing it, and just keep pumping oil in it every week? Thanks guys.

yes, well not so much, you have excesive blow by which means your rings are like shot. so that oil passes the rings and gets burned. That much is however a problem. your engine is going to get carboned up and stuff.

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Open Element Tech Article

ENGINE SPECS:
Stock Rating: 170bhp & 255ft-lbs
305 TBI,Open Element,K&N 14x3,Hypertech Stage I,454 GM TBI
Now Rating: A Little More

STEREO SPECS:
JVC Kalmeleon kdlx3,Infinity Kappa 2way 6x9's,PPI 4x6 Coaxials,PPI PC2400 AMP @ 2ohm
DEI Studio 12" 4ohm DVC,Custom Box:Exactly 1 Cubic Foot