That makes sense. I was thinking the place that was doing them also did a bunch of Ford stuff, and ET did a bunch of it.
Looks like they've been gone for several years now.

maybe chapman does them also ? i have heard good things in the past about stage 6 mopar heads they cnc'd .

i may have found the orig. owner on fb so maybe he can tell me more info on the engine .

The B1-B/S is a good head, but stock they are standard port size and maybe 290 cfm, with small 65cc chambers. I think the 350+ cfm ones have been ported to max wedge port size, and it looks like the chambers have been enlarged if they are 80cc?

Not to be a downer but my edelbrock max wedge heads flow more then these do cnc ported. With a better seat angle than 45 degree will flow 400+cfm.

400.....at what lift? 1 plus inches??

My casting were in the 260 range ootb.


80cc seems dreamy...my chambers were reworked and are just at 67

Victors?

Nevermind, went to their website and saw that it is...

Yep Oh sorry forgot to put that thanks

I have two different cars with B1-BS heads. First one is a 469CID with the standard (906) port size. This engine makes between 675-700hp. It is in my '69 Roadrunner that is very heavy and will just tip in the 10's fully dressed w/exhaust.

The second one is a max effort 498 with a max wedge port that is in my B/Gas Duster (8.60). On the dyno it made 867hp@6500 735lbs@5900.

What mph your 69 run? How much does it weigh?

i base the headflow requirements on some superflow formulas that my head porter gave me 25 years ago . not sure those formulas could change much ? ...... : flow# @ 28" x .43 x 8 = hp capability . i was told that formula was for a well prepped race eng with high compression . he also gave me the conversion from 10" to 28" #'s which people use since they have the smaller benches . 10" flow x 1.67 = 28" #'s . most of you probably are way ahead of those formulas but some may not know .

i am surprised to read 867 hp out of the bs heads . who did the port work on those bs heads ? i would expect 750 with lots of work but 867 hp sounds incredible . those heads would need to flow 421 ft naturally aspirated to make 867 hp .

i plan to play with the heads i have simply because they are paid for , and the car should be pretty light , and we all know , light weight takes less power to go fast .

flow# @ 28" x .43 x 8 = hp capability ,, this is the formula for 10" not 28"

Actually, it's supposed to be flow at 28" x.598 x .43 x (number of cylinders).

To just use the "flow x .43 x (number of cylinders)" you need to have the flow at 10".

The .598 converts the 28" to 10".

And even with that, it's really not that hard at all to beat the hp values those formulas predict....... By a fair amount.

i see what i wrote wrong , i assumed my flow was at 28" but i didn't write 28 or 10" , it just says flow x.43 x 8 .........
so i stand corrected that with 10" numbers it's 10"flow x .43 x 8 = hp capability .
867 hp divided by 3.44 = 10" number of 252ft . convert 252ft x 1.67 and you get the 28" number of 420.8 ft .
how many guys can get 420 ft of air out of the bs heads ? i'd love to get them done if they can get them that good ?

There is a lot more going on than just the flow bench numbers. If you really want to know what the limit is for those heads you need to find someone who has figured out how to make power with them. Everything has a limit and you can't find the limit without a bunch of testing. It shouldn't take more than 3 or 4 phone calls before you know what the heads are capable of producing.

There always is.

Your 514 shows that the flow numbers can only be used as the most crude of rough guesstimates as to what kind of power a particular amount of flow will yield.

The Roadrunner is 3900lbs and it run 124mph.

My suggestion is make the improvements you want to your ne ride over the winter. I would not do anything major yet. Wait for spring and go run the car and have fun with it, learn it and start tuning and tweaking. If you are not happy at years end formulate a plan to improve it. Quit worrying about what the potential of the heads is for now. From my perspective many cars out there do not come close to running to their potential and could use a fair amount of tweaking and tuning to see their potential. Concentrate on that area this year then go from there.