Guest Posted April 27, 2014 Share Posted April 27, 2014 Hi Guys, Is the 320 basically a larger bore 248 using the same block? or are they completely different engines? If so, is the 320 physically larger than the 248?Thanks, Greg Link to comment Share on other sites More sharing options...
billbuickgs Posted April 27, 2014 Share Posted April 27, 2014 The 320 is about 5" longer the the 248, a completely different engine . Link to comment Share on other sites More sharing options...
1939_Buick Posted April 27, 2014 Share Posted April 27, 2014 (edited) Very different. About 3" longer. That's why the wheelbase is longer. The bodies of the series 40 (248ci) are the same as series 60 (320ci)The 320 has a head length of 34 1⁄2" while the smaller engines are 31 1⁄4" long.http://forums.aaca.org/f165/248-v-320-manifold-dimensions-323586.htmlhttp://www.buickheritagealliance.org/index.php/restoration/engines/straight_8http://en.wikipedia.org/wiki/Buick_Straight-8_engine Edited April 27, 2014 by 1939_buick (see edit history) Link to comment Share on other sites More sharing options...
RivNut Posted April 27, 2014 Share Posted April 27, 2014 You can't bore a 401 to a 425, not enough wall and that's only 24 cubic inches. 72 inches would be 9 cubic inches per cylinder. That's a bunch. Here's something to ponder. Today's 2 Liter Buick Regal turbo develops 270 hp. The 320 developed about 170 horsepower. Three cylinders in the 320 are really close to being equal to 2 liters. If you could get the same hp / cubic inch from the 320 as the 2 liter motor, the 320 would be putting out about 720 hp. Link to comment Share on other sites More sharing options...
Daves1940Buick56S Posted April 27, 2014 Share Posted April 27, 2014 Ed:I love the analogy! I am trying to imagine that much HP in my car - I am thinking the running gear would all come apart in short order!In a similar vein, I was involved with Air Force recon systems for 30 years, mostly on the U-2 platform. The U-2R was actually carrier qualified, which is amazing considering its 102 ft wingspan. I have seen the films of the launches and recoveries. Someone asked me if the U-2 was catapulted off, and I said the if they had done that, the only thing going off the front end of the carrier would be the wheels and landing gear strut! (The U-2R, although a Family Truckster compared to the U-2C, was basically built to minimums in order to reduce weight to the max extent possible. Violent maneuvers can result in wing shedding syndrome.)Cheers, Dave Link to comment Share on other sites More sharing options...
Guest Posted April 27, 2014 Share Posted April 27, 2014 Thanks guys. Link to comment Share on other sites More sharing options...
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