Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: B1MAXX]
#2243422
01/29/17 04:00 PM
01/29/17 04:00 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
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I think it was "EPD racing heads"(or something like that) that had a CNC program for the b1bs heads. Afaik, Koffels doesn't have a CNC head porting center(unless they've acquired one in recent years).
retainers. It was ET performance....pretty sure they sold the program though. Just don't know to who.... for some reason Scott Brown comes to mind. 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.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: evansbros]
#2243513
01/29/17 06:38 PM
01/29/17 06:38 PM
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Joined: Jul 2011
Posts: 53 michigan , usa
evansbros
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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 .
Just an old man in his late 50's now that grew up in the 60's and 70's around real muscle cars when they were still new and cutting edge . I was from Michigan but raised in SO. Calif. from a young age until I came back home to get away from the nightmare traffic and smog laws and way too expensive living cost . I am still addicted to mopars and mostly early station wagons , but still love most of the pre '73 mopars the most .
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: Moparmatts72]
#2243660
01/29/17 10:36 PM
01/29/17 10:36 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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master
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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??
Last edited by Von; 01/29/17 10:40 PM.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: 451Mopar]
#2243664
01/29/17 10:37 PM
01/29/17 10:37 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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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? My casting were in the 260 range ootb. 80cc seems dreamy...my chambers were reworked and are just at 67
Last edited by Von; 01/30/17 12:25 PM.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: Moparmatts72]
#2243678
01/29/17 11:05 PM
01/29/17 11:05 PM
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Joined: Dec 2013
Posts: 4,704 Wichita
GY3
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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. Victors? Nevermind, went to their website and saw that it is...
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: Biginchmopar]
#2243873
01/30/17 11:43 AM
01/30/17 11:43 AM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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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?
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: Biginchmopar]
#2244392
01/31/17 12:16 AM
01/31/17 12:16 AM
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Joined: Jul 2011
Posts: 53 michigan , usa
evansbros
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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 . 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.
Just an old man in his late 50's now that grew up in the 60's and 70's around real muscle cars when they were still new and cutting edge . I was from Michigan but raised in SO. Calif. from a young age until I came back home to get away from the nightmare traffic and smog laws and way too expensive living cost . I am still addicted to mopars and mostly early station wagons , but still love most of the pre '73 mopars the most .
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: evansbros]
#2244507
01/31/17 02:57 AM
01/31/17 02:57 AM
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Joined: Aug 2011
Posts: 2,872 Pattison Texas
CSK
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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 . 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. flow# @ 28" x .43 x 8 = hp capability ,, this is the formula for 10" not 28"
Last edited by csk; 01/31/17 02:59 AM.
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: evansbros]
#2244654
01/31/17 01:37 PM
01/31/17 01:37 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
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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.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: evansbros]
#2244871
01/31/17 07:10 PM
01/31/17 07:10 PM
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Joined: Jul 2011
Posts: 53 michigan , usa
evansbros
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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 ?
Just an old man in his late 50's now that grew up in the 60's and 70's around real muscle cars when they were still new and cutting edge . I was from Michigan but raised in SO. Calif. from a young age until I came back home to get away from the nightmare traffic and smog laws and way too expensive living cost . I am still addicted to mopars and mostly early station wagons , but still love most of the pre '73 mopars the most .
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: evansbros]
#2244878
01/31/17 07:34 PM
01/31/17 07:34 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
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There is a lot more going on than just the flow bench numbers. 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.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: Von]
#2244891
01/31/17 07:54 PM
01/31/17 07:54 PM
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Joined: Nov 2010
Posts: 1,397 Carson City, Nevada
Biginchmopar
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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? The Roadrunner is 3900lbs and it run 124mph.
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Re: b1 bs head flow vs other alum std port wedge heads ????
[Re: evansbros]
#2245238
02/01/17 12:55 PM
02/01/17 12:55 PM
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Joined: Jan 2003
Posts: 19,384 Las Vegas
Al_Alguire
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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.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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