Which heads are better?

And does Indy offer something even better than the 440-1 heads?

Thanks

Domingo

I think Indy has some wedge heads that are similar to the 440-1 heads only that they have bigger volume ports? Or is the whole port configuration different?

I think B1 heads have considerably larger ports than the 440-1 heads...right?

D

Domingo...What is the intened usage and what are you building? That may get ya some answers!

Just a generic question. Im not building anything at the present time....

Im just laying in bed with a broken knee from surfing....

I have a HEMI megablock though and a 4,375" billet Bryant crank.

Id like to build a low manteniance (reliable) pump gas race engine with that at some point though.

You might want to consider what intakes are avalible
also before going in anyone direction

Right. From what I see the Indy intakes are always the best cast intakes....I doubt the B1s have many choices as far as intakes goes.

I was very impressed about Muscle Motors pump gas King Krate B1 engine. I think its 1000 hp on pump gas for like 16k? Thats real good bang for the buck!

Well with a Hemi block that kinda narrows it down. Predator and Hemi heads woudl be the only way to go.

As for the original question the B1 head has the best HP potential. If you can make 800+hp from a basic B1 combo you are doing something wrong. Getting to 800 from a -1 while not necessarily difficult will require a bit more thought.

I thought you could get B1s with a hemi bolt patttern....

Still B1s are easier and cheaper to get power from than lets say, some CNC porteds Stage V replacement HEMI heads?

I think there is a B1TS head available in a Hemi pattern, but that is an entirely different animal.

You will be surprised at what you can get out of StageV heads. Great bang for the buck.

The 4.5 by 4.375 is 557(?) inches. A good build with 440-1 heads will make very good torque down low due to smaller ports than the B1. Up to about 800 hp with that many cubes port velocity should make the 440-1 a better choice for a reliable low rpm race motor. You should be able to shift at 6800 with a torqueflite and be in the sweet spot. The B1 will make more power but may need more rpm to do so. I shift my 528 with 440-1` heads at 7200, making 850+ hp.

I have had all three heads, Stage V on a pump gas blown hemi, CNC ported 440-1 on a pump gas motor and I do have a set of B1 not used yet. The B1 flow 430 cfm at .700, .800 and above, the 440-1 flow 370 at .700 and the ported Stage V flowed a tiny bit better than the B1s did If I was making the choice you have I would go with the Stage V based on the parts and intended usage nothing like the WOW factor of a Hemiroid

The b1-TS heads are a hemi bolt pattern. Although they are nothing you would be building a pump gas engine around.
I am almost 100% sure no other b1 heads are the hemi bolt pattern.
Also for indy none of their wedge heads (except Predator) are a hemi bolt pattern.

Since you already have the block I think the Stage 5 heads are the best way to go.

the best 440-1 flows 400 cfm and the best B1(not the TS) flows 470 cfm. Its true you have to use the B1 intake...but its about the best single four intake anyway. price wise they are about the same for the "package" ...Indy is about $3500 and you can get the B1 deal for around $3200 in the winter special. That said, if you want the biggest valve B1/MC it will cost another $900 for the Ti valves.