[Stan Weiss]

Originally Posted by Aaron Quinton

Stan,

You can't let data get in the way of board politics can you?

A full blown canted valve billet head modeled after a DRCE head is a no compromise solution. The bore centers driving the intake valve size are the limiting factors and the ability to rev the engine for an NA configuration. An engine this size in an optimized NA configuration should be capable of hitting 1300 hp with this type of head. That's 2.4 hp per CID. A friends small block bracket engine is pulling 2.55 hp / CID running used canted valve parts from the last decade. It's all about intake valve size and the reciprocating mass that limits RPM along with controlling valvetrain dynamics. We need to look outside of the Pontiac world to look at current capabilities, engines are just air pumps.

Inline Pontiac heads right now have hit 2.2 hp / CID with castings NA with a single 4. A no compromise billet should be capable of more with evenly spaced intake and exhaust ports. The ability to jump the header starting pipe 20% in area without paired exh ports is worth a ton and a second carb at least 50 hp.

This is a nitrous engine I hear. So it has the chambers softened to reduce hot spots to control detonation. That's a slight drop in compression. It will also have a cam optimized for N2O due to a 50% increase in mass flow over NA even though "nitrous cams" don't exist. So in nitrous trim it's going to be down 10-15% hp as compared to an optimized NA engine.

So back to politics, look at how the expectations are set. If it's someone else's engine you set the expectations through the moon and when they don't achieve they are idiots. If it's your engine set the expectations so low you trip over it, over achieve and you're the genious hero.

Back to task, Kinsler's right, 1120-1150 hp should be reasonable for a N20 engine configuration. But this in the internet so I'm still an idiot.

The bottom line is the car will be a rocket and well done to Jack for pulling it together. Good luck running it. I'm out.

Aaron

Aaron,
Lets just say it would be very interesting if someone built an all-out N/A Pontiac engine using those heads.

Stan