Wednesday, April 24, 2013

David can beat Goliath.....Without God's help!! .

High Performance doesn't have to be expensive. Like the hit detective show "Numbers" it's simple math.  All other things being equal-a 300 hp engine in a 3,000 lb car will run just as fast as a 400 hp engine in a 4,000 lb car. And the 300 hp engine will be cheaper to build and will probably idle smoother and get better gas mileage. You'll note I said "All other things being equal".  Now some people will argue that "A 454 can beat a 327 every time."  Really? Let's say you've got two Chevys competing in the "Pure Stock" drags. Driver A has a 1970 LS6 Chevelle and Driver B has a 1967 Nova SS. The Chevelle has the 450 hp 454, a TH400, and 3.31 gears, and weighs about 4,070 lbs. The Nova has a 350 hp L79 327, a 4-speed, 4.11 gears and weighs 3,278 lbs. The Chevelle will probably run anywhere from 13.40-13.80 on street tires. The Nova could very easily run 13.10-13.30-depending on the driver's ability to ride the clutch. Because The lightweight Nova will launch with less wheelspin and have an equal power to weight ratio, it might run a faster e.t.  Another example- A guy with a 1965 Tri-Power 389 GTO beats a 1972 455HO Trans-Am in a drag race. Again- the '65 GTO weighs 3,400 lbs, has a 389 rated at 360 gross hp, a 4-speed and 3.90:1 gears. The T/A weighs 3,731 lbs, ( 3,830 with A/C ) has a 455 rated at 300 net hp, and has 3.08:1 gears with an automatic or 3.42:1 with a 4-speed. Who's going to win? When you factor in the difference between gross and net hp ratings, The power to weight ratio is about the same-it comes down to tuning and driver skill. Let me tell you a true, but funny story. My dad had a 454 2wd short-box 77 Chevy Pickup that showed it's tailgate to many a Camaro and Mustang. He sold the 454 to a friend who was building a big-block Chevelle and put a 400 small-block in it. Except the 400 had a 350 hp 327 cam, headers, and an Edelbrock Performer intake and a 780 cfm Holley carb. The 400 actually had more torque than the stock 454!! With the 454, it could beat my cousin's IROC-Z out of the hole and hold the half-car lead until almost 90 mph. With the 400, it just lit the tires up, which caused a loss in an impromptu drag race. Even if we walked it off the line and hit it 20 feet out, it still fried the tires.  The pumped-up 400 small-block had more low-end torque than the stock 454 and didn't launch as good, even though the engine obviously had more power. So, it's the total package. Big power is useless if you can't put it to the ground. Mastermind          

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