Yeah. There are no Air Gaps or Xelerators for those If I do another car and win the lottery I would do a 9.5 deck race block with 4.125 bore and 3.75 stroke (401 ci) with the 2.75 Cleveland mains. Good times.
I need some 1800 hp for drag racing. There are some 351 (W/C/M/400) that i could get this? I will use a bi-trubo.
Look at the NMRA. There are plenty on small blocks making huge power, and a lot of them are still street legal, and streetable!
There are plenty of engines out there making massive power like that, but they use aftermarket blocks, like Dart... As a matter of fact, EVERY part of an engine like that will be aftermarket. 5.0 blocks tend to split in half north of 500 hp, while 351w blocks can live to around 800 hp. I don't know what to say about 351c blocks. They were used for years in Pro-Stock racing and Nascar, however those guys used Austrailian blocks for a while, then Ford offered a beefy block through FMS into the early 80s. I don't think the stock US 351c block was used much in ultra-high output applications. That said, there were plenty used in Pro-Street applications, and there were never any notable 'catastrophes' being had. If the 351c blocks were prone to split in half, we'd have heard about it in the 70s and 80s. Even when Pro-Stock racers went to Kangaroo blocks, they still used the stock 351c crank. They say that crank is very tough. Hank The Crank (HTC) was said to spin them up to 10k rpms in racing. I wouldn't mess with the 351m/400 family myself... Good luck
1800 HP is about $18000. ($10 per HP is a decent rule of thumb) You need to build from all after market, reliable sources and reliable machine shop services as well. You will also need to find a transmission and rear end to take that power too.
if you can get 1800 hp for $18,000 then your doing really well. i would expect to spend around $25,000 to achive that level of power every little thing is very expensive. the turbos, the fuel system, the short block, the heads, the induction system the fuel controle system, the ignition system all have to be top notch and that stuff is not cheap.