440-1 vs B1

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No dought about that. But Dave Koffel told me a B1 Orig. cnc ported had a 5.625 long 320cc intake port. I ask for my engine analyzer plus program.

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No dought about that. But Dave Koffel told me a B1 Orig. cnc ported had a 5.625 long 320cc intake port. I ask for my engine analyzer plus program.

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I don't think the -1 is close outta the box. The B1's are usually 385 unported. That's what my flow sheets say.

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my indy are CNC 345s

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These look bigger. B1 Orig.

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the -1s when fully worked over(like GregsDart has done to his) will give the original B1 a run for its money..but in the end the B1 will win. The -1 is a great flowing "max wedge" type head whereas the B1 was designed from a clean sheet of paper with maximum flow in mind.

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My heads have 365cc after hogging out for alky. That has to be the practical limit i would think.
On power potential, "no comparison " is baloney. Look at my ET. I expect to better it by .2 this year with new head work and other engine improvements to compliment the increased flow. That is despite going back to a bias ply slick from a radial.
They will never be on par with a B1 in fully ported condition, but can be made to run well for a head strangled with the size port opening they have and other restrictions.
After putting 2.3 intakes in mine, head flow was better than B1 original ported heads up to about .500, landing at 396 cfm at .800 and 400 cfm at .900. The original porting numbers came off flow benches at three separate shops, so trying to say the numbers are bogus ain't gonna fly.
I believe the practical limit on power is going to be performance of 8.50s at 2950 lbs. Should relate to 950 hp or there abouts. The gentleman that ported them, Radar from R & R in Iowa helped develop the B1 so he has his act together. He commented that a good build is about 2.45 hp per cfm of head flow. Hope I get there. That would be 970 hp.

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This argument could go on for days. And I know who Radar is and his reputation for making power. I also had a nice set of stage 6 heads that worked well, but the cost me alot of money to get there. The Indy -1's were only slightly better than the stage 6's. So my point is, you could spend alot on the -1's and make a decent head out of them, or but a set of B1 originals or M/C's better yet, so why would you want to???? and the number one reasonis, you don't have to deal with Indy. Because talking to the Koffels is a pleasure, and their product is smokin. And if you can get a guy like Radar to port them, even better. JMHO, but PSO's are the next step as I don't want to buy new headers and already scare myself with the current powerplant.

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Just goes to show The Pred heads and TS heads can not even be put into the same category as any of the other heads just based on the port entry.

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There's no argueing about that. They are both very impressive. I wonder if anybody has pics of the PSO's to compare?

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heres the PSO intake...

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great post Go green! pics are worth a 1000 words. The straighter the shot the better! The B1 PSOs address that problem somewhat with much higher and rounder port. So in a nutshell, the higher the port and the longer the valve, the better!

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Sounds like the old Brewer head...
Got some I'm DYING to try someday...
MAN what a shortblock they'd need... RB

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You got some Brewer's! I'm jealous I still think those are the best inline valve BB head ever offered for mopars! They have extemely long valves and high ports like the PSO but maybe even higher and rounder. I still cant understand why someone did'nt buy Freds business and keep producing them..

I think a koleno or world block would be great with those heads.

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great post Go green! pics are worth a 1000 words. The straighter the shot the better! The B1 PSOs address that problem somewhat with much higher and rounder port. So in a nutshell, the higher the port and the longer the valve, the better!

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Sounds like the old Brewer head...
Got some I'm DYING to try someday...
MAN what a shortblock they'd need... RB

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You got some Brewer's! I'm jealous I still think those are the best inline valve BB head ever offered for mopars! They have extemely long valves and high ports like the PSO but maybe even higher and rounder. I still cant understand why someone did'nt buy Freds business and keep producing them..

I think a koleno or world block would be great with those heads.

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Don't be jealous, they're just aluminum bricks gathering dust for now! I do have the intake (low deck single Dominator), valves (2.35 X 1.78 X almost 7" LONG!!!) and spray-bar valve covers, along with one ready-to-port set and one rough/as cast set with seats and guides. It's an intimidating pile, to be sure!
Been looking at the Koleno blocks pretty hard and really longing for a LOW-DECK (supposedly in the works? ) to build a 512-517" from, otherwise a tall deck 542-572 seems in order... RB