jmos4

Hi

Went to turn over a 68 455 that had been sitting since 85ish and went to take socket to the dampner bolt and bam this plate was bolted to the pulleys.

Why did Oldsmobile use this and what was the design purpose as I have never seen this before.

Regards,

2blu442

I can't answer your question, but can add that I've only seen this on 1968's 350's, 400 and 455's. And usually the area under the plate looks brand new!

jmos4

Hi,

Yeah the inside of the pulley looks new, even has stenciled part number. Wish the rest of the engine looked that nice.

Regards,

442Harv

I have one of those, if anyone wants it,can have for shipping.

Greg Rogers

I first saw one of those plates on a old Vista Cruiser in a salvage yard. My 71 Cutlass and 70 Vista Cruiser didn't have it.

BackInTheGame

PM Sent.

Harv, I'll take that plate off your hands. Do you still have the bolts and spacers by any chance?

442Harv

Yes, it is still on the pulley. I sent you a message.

Yellowstatue

On those three groove pulleys, they tend to fill up with gravel and anything else that can hide in there and throw the engine out of balance.