Just got done with my new project. I installed a 4-71 blower on a SBC with 8:1 compression, Brodix heads, and a single Holley 950 blower carb with manifold referenced pv. The car started on it's first start and ran for about 40 minutes at 180 degrees temp. While running I set the total advance to 32 degrees and set the 4-idle mixture screws to the highest vacuum reading. It has a TH350 and in Park it idles at 1000rpm with 10"-inches of vacuum and 5"-inches of vacuum at idle in gear. I put her back in "park" and revved the motor several times then turned her off. Perfect!!!! I walked away and let her cool down, so I went indoors and got a "silver bullet" for myself. The problem started when I went to restart her. The car fired up and blue clouds of smoke blew out of both exhausts!! I revved it to clean her out but more clouds of blue smoke shot out the exhaust. *** Put the car in gear and the car died. Tried starting again, again, and again, but nothing. I pulled all eight plugs and they were black and oil soaked. What happened !!! Did all the oil get sucked up the PCV and into my carb, did my intake manifold gaskets fail, is my 50cc squirter to rich ???? Any ideas?????

Check the PCV and transmission modulator hoses for fluids. I use clear hose for testing either one while running. The Corvette in my pictures had a huge oil consumption problem with the PCV the first time I worked on it, It had standard height valve covers which I replaced with a tall set to solve this very same problem.

You need to do a compression check, oil soaked plugs isn't good. Do you have forged pistons or? And...what was your ring end gap? I'd hate say you may have broken rings, that's pretty drastic; were all cylinders oil soaked?

If it were me, I'd like what carsavvycook thinks. My thoughts are worst case.

Good luck, Larry

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Thanks for the info Larry!!
I did a compression check and all cylinders are ok. The pistons are all SRP forged blower pistons, but i don't remember the ring gap. All my 8-plugs were lightly oiled and black fouled. My MSD 6btm couldn't light 'em up.

Thanks Carsavvy!!! I will try to raise my PCV as I have low rise Brodix valve covers with no baffles and I need a new set of plugs.

MSD Ignition @ your compression ratio runs at it's best with a medium heat range plug gapped at a minimum of .050 to a maximum of .060

Get a taller set of valve covers. It will solve your aggravation from consumption.

I pulled the PCV and it was full of oil. Also, the hose from the PCV to the base of the carb was filled with oil, so was the base of my carb and the top side of my blower. My vacuum gauge line also had some oil in it. I dumped the PCV and hose and instead added another breather. Next I installed new plugs with a step up in heat range. That should do it, but I know I will have a smoke show when it starts because of all that oil my blower sucked into the cylinders. Wish me luck!!

I've been thinking about my pcv problem. I have custom polished low profile aluminum valve covers that I don't want to discard. My options are: 1) buy valve cover spacers that would raise my covers 1 1/4" higher and run a baffle and PVC 2) since my electric fuel pump is in the rear of the car, I could place a screw in PCV valve into the engine fuel pump block off plate and run a hose to the carb base "easy and cheap" 3) install an oil catch can that I can make out of an air compressor filter or just purchase a fancy aluminum oil catch can "lotsa work". What do you guys think/prefer ??

Blower guys??? Whatcha think?
1, 2, or 3 ??? I've seen supercharged Fords with alot of creative PCV solutions. I've also seen alot of blown, Flat Head Fords with ingenious PCV solutions. What's best for a blown SBC ? I value anyone's input into this situation as more information shared with other Rodders is better than none.