Dart blocks
Not to mention the enlarged water jackets, the closed deck, and the ductile sleeves. And for the record Dart has 2 blocks, the standard B18 with a 212mm deck and the B20+ with the 226mm deck height. Assuming B18C1 standard piston compression height, the math works out to a 1.74:1 r/s ratio on the B20+ with the GSR's 87.2mm stroke, or a 1.6:1 r/s ratio with the 95mm stroke. Displacement with their optional 84.5mm bore and a 95mm stroke would be 2.13L, and you'd have virtually identical geometry to the B18C.
Not to mention the enlarged water jackets, the closed deck, and the ductile sleeves. And for the record Dart has 2 blocks, the standard B18 with a 212mm deck and the B20+ with the 226mm deck height. Assuming B18C1 standard piston compression height, the math works out to a 1.74:1 r/s ratio on the B20+ with the GSR's 87.2mm stroke, or a 1.6:1 r/s ratio with the 95mm stroke. Displacement with their optional 84.5mm bore and a 95mm stroke would be 2.13L, and you'd have virtually identical geometry to the B18C.
i bought a b20 block for 850 bux, had it sleeved at Ge for 850 shipped both waysCoulda done the exact same thing with a B18 block, but for 600 dollars cheaper
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