dodge guys will know a lot more than me here im a ford guy looking to put a 12 valve in my 88 f250. my ? is will a mechanical 5.9 (ntc) make the same numbers as the newer 5.9? will the block hold the heat? what are the downfalls? that sort of thing. witch one is better off im only lokking for maybe 400-500hp i just want a truck that will move and pull like a tank an the idi 7.3 just wont do it even with the blower. Ne help is greatly accepted.

 

If you are looking to make it a simple swap a 12 valve with a p7100 inline pump will make the numbers you are looking for. The blocks are all strong and will hold up to the power. If its going to be towing a lot than 500hp will make it hard to do. There aren't many downfalls going from an idi to a cummins. Someone else will chime in to with more info,thats all i can think of right now.

 

x2. The 1st gen engines are capable of making 650+ on #2 only, but it's going to take a LOT of time and money to get there. And, it won't be a reliable daily-driving type of engine. But, the 94 - 98, (I think ) engines with the P7100, (P-pump) will make 500+ relatively easily, and will be fairly streetable. The block is exactly the same, AFAIK, but the IC, turbo, drivetrain/tranny IP and injectors are all different. And I believe they have some kind of computer too.

 

i would go with the 2nd gen cummins myself the guys are right 1st gens wouldnt be very streetable at that amount of hp!!