Oh dear God! 318 stroker

Oh dear God! 318 stroker

Is the 318 still together? If it is, get a depth mic with an extension on it. Put a timing tape on the balancer so you can index the 90 degree points from TDC #1. Measure how far the pistons are below deck at 1, 2, 7, & 8. Then measure BDC on each one to see the actual stroke on each hole to see how far the crank is off from 3.31 inch stroke (some sources list as 3.306). A little subtraction from there will give you your actual deck height. I’ve got several 318 blocks I’ve measured out deck height closer to 9.97 than 9.96 after checking stroke, piston compression height, and rod length. With a typical 1.72 compression height replacement piston CHRYSLER 5.2L/318 Mopar small block LA Pistons - 1.720 in. Compression Height (in.) - Free Shipping on Orders Over $109 at Summit Racing

and a 3.58 inch stroke 318 main cranks (Summit shows that they have some in stock, but I would recommend inquiring to @PROSTOCKTOM about his Molnar parts), you only need a 9.633 deck height (1/2 3.58 =1.79 + 6.123 rod length + 1.72 = 9.633 to achieve zero deck. Considering that most 318s came around.040 to .060 (and oftentimes more!) above blueprint specification above deck, what you’re talking about doing is within the realm of possibility. Also, bear in mind that a 318 doesn’t have the same amount of main webbing structure or as large of main caps as a 340 or 360, so main studs and maybe aftermarket caps and studs (or possibly a Hughes main girdle kit) aren’t a bad plan if you’re planning on something that is going to get hammered a lot. Stock bore up to 040 over in a 318 with a 3.58 stroke gives you between 345 to 350 cubic inches.