348 and 409 W blocks. Dip stick on driver side for 348. Passenger side for 409. The 409 is worth thousands and thousands if complete. Pull it out and sell it. $5000 minimum. Get the serial code off of the front head pad and post it. It's a stamped number not a cast number. .
The GMC V6 is neat, I have one. Very inexpensive to buy. 305 cu in and up. A basic boat anchor but very well engineered and nostalgic. Torque monster.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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