Quote:
Originally Posted by Aussie Mike
Just for Popcorn...
How about we throw the LS7 in the mix.
427W: "Weighs approx. 200lbs. less than a Big Block 427FE."
LS7 weighs approx 400 pounds (458 pounds fully trimmed) which is about 120 pounds lighter than an iron head 351W based motor. However the gap is a little closer if you run alloy heads.
427W: "Improved internals over factory 351w. (Forged Connecting Rods, Crank and Pistons)"
LS7 has Titanium con rods from the factory, 6 bolt main bearing caps, factory dry sump etc.
427W "Same Dimensions as 351w."
LS7: Smaller than 351W
427W "Approx. 2-3 inches less in Width and Height than 427FE."
LS7: Approx. 2-3 inches less in Width and Height than 351W
427W "Huge Torque increase over factory 351 engine (500+lbs. when built properly)"
LS7: 475ft/lbs factory stock. This is a conservative factory rating. Dyno tests of stock crate engines have shown this number to be closer to 500. Add a cam and that number will jump to well over 500ft/lbs and 600+ HP.
First Exclusive Dyno Test of a 427 ci LS7 Crate Engine - Hot Rod Magazine
427W: "Runs Cooler than a Big Block Ford."
LS7: designed to run on pump gas, drive to work during the week and then clean up at the track on the weekend. Comes with a factory warranty too.
427W "Vehicle Handles and Corners Better than a Big Block Engine.
Just as Fast or Faster 0-60 or 0-100mph times than a Big Block."
LS7: Umm... Have you seen the times they run them round the Nuremberg Ring?
427W: "Still have the bragging rights of a 427 cubic inch engine under the hood."
LS7: "Still have the bragging rights of a 427 cubic inch engine under the hood."
Let the arguing begin... LOL!! 
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You know this all sounds great, the only problem I have is, does anyone remember the last time a Chevy won the Engine Masters Challenge? I know my memory isn't what it use to be but I can't think of any.