The 258 sweeps an area of 275.3 sq.in, the 304 - 303.7, and the 360 - 352.3. Mean piston speed is lower in the 8s also with the shorter stroke, for a given rpm. (Swept area is the circumference of the bore x stroke x cylinders). Ken Quoting Tom Jennings <tomj@xxxxxxx>: > I know this will seem like blashphemy to performance V8'ers, but > since the six and the gen2/gen3 8's all weigh more or less the > same, what about running a 360 massively detuned? > > Think of it as a TORQUE MONSTER and not 360=big HP. > > Move the torque peak as low as possible, period. 300cfm 2-bbl > carb (or equiv FI), you could get away with single exhaust, etc. > > Here's a little chart. I had one with my T150-OD trans. I plugged > in a 2.22 axle. OD is obviously silly with this motor/axle. Tire > size is 205-70/R15. > > Should be easy to tune a 360 for this! Pointy cam, no overlap. > Smoooooth and quiet too! > > But maybe the V8 with it's 33% more internal friction is a big ose > for this, over a six. (8 pistons/valve jobbies vs. 6.) The low > RPMs would help offset that though. > > Run 50psi in the tires, 10-weight in the trans and axle... > kidding. > > > > TEST HACK ENGINE 1st 2nd 3rd OD > RPM CFM MPH MPH MPH MPH > 1000 89 15.8 19.9 35.2 50.3 > Axle ratio n:1 2.22 1100 97 17.4 21.9 38.8 55.4 > Tire diameter 26.3 1200 106 19.0 23.9 42.3 60.4 > 3.78=9/37 1300 115 20.5 25.9 45.8 65.5 > 3.31=13/43 1400 124 22.1 27.9 49.3 70.5 > 3.54=11/39 1500 133 23.7 29.9 52.9 75.5 > 1600 142 25.3 31.9 56.4 80.6 > RPM interval 100 1700 151 26.9 33.8 59.9 85.6 > T-150/OD 1800 159 28.4 35.8 63.4 90.6 > First 2.23 1900 168 30.0 37.8 67.0 95.7 > Second 1.77 2000 177 31.6 39.8 70.5 100.7 > Top 1 2100 186 33.2 41.8 74.0 105.7 > OD 0.7 2200 195 34.8 43.8 77.5 110.8 > 2300 204 36.3 45.8 81.1 115.8 > 2400 213 37.9 47.8 84.6 120.8 > Engine CID 360 2500 221 39.5 49.8 88.1 125.9 > VE 0.85 2600 230 41.1 51.8 91.6 130.9 > 2700 239 42.7 53.8 95.2 135.9 > 2800 248 44.3 55.8 98.7 141.0 > 2900 257 45.8 57.7 102.2 146.0 > > 3000 266 47.4 59.7 105.7 151.0 > > > >