anyone hear of a h-p big block sawtooth 318?

67Dart273 said

Actually it is NO larger than an LA engine, and in fact if you tear them down and remove the pistons (Polys don't use flatop pistons) you would be hard pressed to tell the difference. In fact, late heads nearly fit. Many parts including the timing cover (I believe) and pan will fit.

Click to expand...

The dead giveaway on the difference in the blocks is the poly 318 doesn't have front and rear freeze plugs. Otherwise the dimensions are the same as an LA block. Same block as a 392 hemi?? Please...... The poly 318 was fazed out in early '67 in cars and pickups but in motorhomes.....who knows. The drivetrains were determined by what the coach maker wanted and what was still in stock at Dodge. They went to the 318-3 after that. Not sure it was an improvement actually. The 318-3's had their problems and many parts don't interchange with 318-1's....like those heads. Unless you use the intake and water pump, they won't fit an LA motor.