I would like to achive 550+ rwhp. A few ways to get there.

1) N/A - Build a 383-396 c.i. LT1 with converted SBC heads and spin to 7,000+ rpms.

2) N/A - Build a 427-434 c.i. SBC convert it to run with OBD2 pcm/LT1 fuel injection and spin to 6,250 - 6,500 rpms.

3) Forced induction 383-396 LT1.

4) NITROUS.......big fat piles of nitrous.


Of the above choices, the first three seem to be around the same amount of money to build, and I would rather not do number 4.

So my choices are 1-3, and I like number 2 (doesn't sound good does it).

 

You know, an 8.5:1 compression 355 with a D1 or T trim should have no problems making 550 hp at the tires. You could also look into the new LT1 F body kit that PTK just released.

 

I know a 355 c.i. with a forced induction setup would probably make the power that I'm looking for, but I still would have to rebuild the bottom end with forged parts to handle the boost. If I'm going to build the engine, I'm going to stroke the engine. A F.I. stroker is going to cost more than a big cube SBC.

I appreciate that everone is offering other ways to reach my goals of 550+rwhp, but my original question still remains.

Can a BIG CUBE SBC be converted to use the factory OBD2 computer in a 96-97 F-body?

What needs to be done and how much $$$?

 

If you think you can put a heads/ cam package on that motor that makes almost 500HP and the stock bottom end stay together for any length of time, your HIGH.

The problem everyone seems to be overlooking is that unless you build a 396 or larger stroker, the cam you will need (even with awsome heads) to make these HP numbers will never pass emissions.

To pass emissions your best bet is to rebulid the bottom end with forged pistons and upgraded rods, put in a mild to moderate cam, and then force feed it. Any thing else just won't get through emissions. There are plenty of good LT1 heads out there without changing over to gen 1 heads. But the cam will be so big it won't have a snow ***** chance in hell of passing. The dyno roller test is tougher to pass than the standard idle test.

 

I give up!

 

Never give up.

It can be tough discussing 550 rwhp build stuff with a group of guys who're happy knowing what it takes to make 400-450 rwhp. All emmisions concerns aside, 550 is doable and it's been done.

The most inexpensive way is going to be in using the AFR 215RR head (LT1) and a custom intake. The 215 will need porting to get there, but it's a better head to work with than the low-port 227.

You will want to build a 383 or 396 and you will need to cam the engine to make peak hp right at 7k. The devil's in the details but it's definitely do-able with the right induction system.

-Mindgame