just remember 4.6 and 5.4 iron block cylinder walls distort once you go over 6000rpm with anything over 700hp. youre gonna need an aluminum block or keep the revs low.
I thought it was the other way around with that. It will cost you tons to bore it out more than stroke it. You shouldn't go more than .030 on the walls, but .020 is probably what I would recommend. In the end it will add like 1 cubic inch to the motor. Stroking is up to you. People say the piston speed from a stroked motor is too great, but there have been 5.4s that have reved to 9k for lengthy periods of time (5.4 is a stroked 4.6 engine found in trucks mostly).
Are you looking for 1,000 RWHP or 1,000 FWHP because if its FWHP then you can save yourself some money and not have to go with I rods and stuff for your short block. The most important things with these engines is having a good tune and gas. Detonation kills engines. I have read several books on turbo charging, and on a N/A engine, the inertial loads (the load from where the piston/rod changes direction) are 50% more at 7k rpm than the power loads (the load from the igniting gasses pushing down) Speed and fatigue kills engines, not too much power.
@busakiller
cobra cranks have had more than 1600 hp put on them and they remain intact. They are good cranks for a good car. Also with the rods, the rods are fine, you can use H - Beam style rods that are much cheaper even for a build like this possibly, even though 1k is pushing it, 850 would be max I would want to use H beams for. IDK bout the pistons, I like having the rings and pistons as a set.
Last edited: