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head swap to B1 BS HP gain? #574101
01/05/10 07:50 PM
01/05/10 07:50 PM
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ELYRIA,OH
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blownzoom440 Offline OP
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ELYRIA,OH
ported or just cleanedup what did you gain in HP,ET or MPH.you can list your combo if you like but i am just lookinfg for results.
Thanks for any info.

Re: head swap to B1 BS HP gain? [Re: blownzoom440] #574102
01/08/10 07:43 PM
01/08/10 07:43 PM
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ELYRIA,OH
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blownzoom440 Offline OP
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Re: head swap to B1 BS HP gain? [Re: blownzoom440] #574103
01/08/10 10:01 PM
01/08/10 10:01 PM
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Posts: 654
ohio
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dbran451 Offline
mopar
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ohio
I'll give you a bump as I am going to the BS heads also and I am hoping for at least a tenth.

Re: head swap to B1 BS HP gain? [Re: dbran451] #574104
01/08/10 10:09 PM
01/08/10 10:09 PM
Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer Offline
master
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Rock Springs
Those heads are probably the best flowing stock port opening head ever made. Chuck at Best Machine ran a set that would shame a bunch of 440-1 motors out there.


[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
Re: head swap to B1 BS HP gain? [Re: blownzoom440] #574105
01/08/10 10:30 PM
01/08/10 10:30 PM
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Posts: 43,007
Bend,OR USA
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Cab_Burge Offline
I Win
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Bend,OR USA
I did a swap from a set ported 906 heads with 2.14 and 1.81 valves to a set of CNC ported Eddy RPMs and gained 2/10 and 4 MPH I beleive the stock out of the box B1-BS are better than the stock Eddy RPM as far as flow, my stock OOTB Eddy RPMs outflowed the ported big valve 906 heads


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: head swap to B1 BS HP gain? [Re: Cab_Burge] #574106
01/08/10 10:58 PM
01/08/10 10:58 PM
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ELYRIA,OH
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blownzoom440 Offline OP
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thanks guys.i am going from iron 346 flowing 280 at .600 and the BS are said to flow 330+ at that.these heads will give me plenty of room to grow and be repairable.any1 know what the cnc ported heads flow?

Re: head swap to B1 BS HP gain? [Re: blownzoom440] #574107
01/08/10 11:02 PM
01/08/10 11:02 PM
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Posts: 3,698
NE Oklahoma
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Von Offline
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Quote:

thanks guys.i am going from iron 346 flowing 280 at .600 and the BS are said to flow 330+ at that.these heads will give me plenty of room to grow and be repairable.any1 know what the cnc ported heads flow?




Who ported your heads?

Dwayne ported mine and they go 325 @.600.

BTW, the out of the box numbers are junk on the BS heads. OOTB, the low and mid lift numbers are horrible.......to say the least.

I think Scott Brown used have flow figures on his website of some CNC'ed BS heads. I think they were close to 350 at .600.


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.
Re: head swap to B1 BS HP gain? [Re: Von] #574108
01/08/10 11:11 PM
01/08/10 11:11 PM
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ELYRIA,OH
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blownzoom440 Offline OP
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Quote:

Quote:

thanks guys.i am going from iron 346 flowing 280 at .600 and the BS are said to flow 330+ at that.these heads will give me plenty of room to grow and be repairable.any1 know what the cnc ported heads flow?




Who ported your heads?

Dwayne ported mine and they go 325 @.600.

BTW, the out of the box numbers are junk on the BS heads. OOTB, the low and mid lift numbers are horrible.......to say the least.

I think Scott Brown used have flow figures on his website of some CNC'ed BS heads. I think they were close to 350 at .600.



scott koffel is going to do the bowl,port match and said it would flow that.i think the cnc flows more than 350cfm no?
i w2ish the low flow was better.it would help me more i think.[446 cubes,.646 lift roller,6500/6800rpm]
this info some1 else posted.

5721962-100_1791.jpg (173 downloads)
Last edited by METAL STORM; 01/08/10 11:20 PM.
Re: head swap to B1 BS HP gain? [Re: blownzoom440] #574109
01/08/10 11:32 PM
01/08/10 11:32 PM
Joined: Apr 2008
Posts: 151
North Eastern New York State
montessa Offline
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North Eastern New York State
Dwayne did my B1/BS heads a number of years ago. They ended up flowing around 320 cfm at stock port window size. Motor was a 528 with an M-1 tunnel Ram that made 750Hp and 720 torque. It ran 9.70's at 3900lbs. I felt that that was pretty decent.

Re: head swap to B1 BS HP gain? [Re: montessa] #574110
01/08/10 11:43 PM
01/08/10 11:43 PM
Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
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blownzoom440 Offline OP
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what was your MPH?
who did the dyno?
that is a good running combo!

Re: head swap to B1 BS HP gain? [Re: blownzoom440] #574111
01/09/10 01:11 AM
01/09/10 01:11 AM
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Von Offline
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[quoteand said it would flow that.i think the cnc flows more than 350cfm no?
i w2ish the low flow was better.it would help me more i think.[446 cubes,.646 lift roller,6500/6800rpm]
this info some1 else posted.





I'll put it this way, with only bowl work, they wouldnt flow 330 on Dwaynes bench, Id bet the house on that!!!

Honestly I was surprised they got 350 out of a CNC ported BS. I dont think they will go much more than that. Yeah, I know somebodys cousin had a set that flowed 3XX, see the last paragraph below.

I'll also add that Dwayne did another set of BS heads a week or so before he did mine. They were MW size and didnt flow more than mine at standard port window. Im wanting to say the flow was within 2-3 cfm, honestly I think it was closer than that. I know somebody will tell you the MW version will be the cats meow, but Dwayne was positive that unless you need the bigger intake, its not worth it to go MW on these heads.

Further, I had the heads flowed on a local bench. They flowed almost 340 at .700. I didnt pay much attention to that number, since so many heads on here have come from Dwayne, been flowed on his bench, we know what they run, etc.

Last edited by Von; 01/09/10 01:23 AM.

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.
Re: head swap to B1 BS HP gain? [Re: blownzoom440] #574112
01/09/10 03:54 AM
01/09/10 03:54 AM
Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar Offline
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Aurora, Colorado
From Chrysler Power, January 1995 - Dan Davorak flowed Stock Port "B-1 B/S" Wedge head.
Note: I believe these were flowed at 10" and converted to 28" numbers:

0.100" = 67.74
0.200" = 131.96
0.300" = 183.78
0.400" = 225.53
0.500" = 262.92
0.600" = 278.92
0.700" = 283.72

From Performance for the Chrysler car Enthusiast, Sep/Oct 1993 - Performance Engineering flowed Ported "B-1 B/S" Wedge.
Article says this was a mild porting job?

0.200" = 151.0
0.300" = 209.0
0.400" = 257.5
0.500" = 297.9
0.600" = 315.8
0.650" = 319.0

from ET heads.com, cnc ported (I think max wedge port size.)

Valve Lift Intake Exhaust Valve Lift
.100" 75.8 59.1 .100"
.200" 149.6 108.2 .200"
.300" 217.8 144.8 .300"
.400" 272.6 173.2 .400"
.500" 313.6 198 .500"
.550" 330.6 209.2 .550"
.600" 342.8 219.3 .600"
.650" 350.6 229.5 .650"
.700" 355 238.2 .700"
.750" 354 246.1 .750"
.800" 353.5 253 .800"
.850" 354 260.2 .850"
.900" 352.8 264.7 .900"

Exhaust to Intake Flow Ratio 66%

The heads have nice small closed chamber design 65cc, and sparkplugs moved closer to center of chamber. zero deck Flat top pistons in a 451 makes about 13:1 compression ratio.

My 451 used dished pistons to get 11:1 cr, and I only needed about 32-33 total ignition timing.

Re: head swap to B1 BS HP gain? [Re: 451Mopar] #574113
01/09/10 07:55 AM
01/09/10 07:55 AM
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Posts: 8,647
ELYRIA,OH
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blownzoom440 Offline OP
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great info!Thanks!

Re: head swap to B1 BS HP gain? [Re: blownzoom440] #574114
01/09/10 10:41 AM
01/09/10 10:41 AM
Joined: Feb 2005
Posts: 20,116
PA.
pittsburghracer Offline
"Little"John
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PA.
Tom Hemphill has produced excellent numbers with B1-BS heads. My friends 68 charger (2800-2900 pounds)has gone as fast as 8.60's with 500 inch engine. These heads have to be opened up to max wedge size to make good numbers. I wish I could post some pictures of his car but the cars name is Tims Toy.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: head swap to B1 BS HP gain? [Re: pittsburghracer] #574115
01/09/10 10:47 AM
01/09/10 10:47 AM
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Mo.
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supercomp Offline
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Re: head swap to B1 BS HP gain? [Re: supercomp] #574116
01/09/10 11:47 AM
01/09/10 11:47 AM
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Posts: 1,944
Apollo, PA.
B1MAXX Offline
top fuel
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I have the ET heads on a 512 ci. They have a couple of programs for those heads. At the time I got them I was 464 ci and they talked me into a standard port window. The 464 in my 3400lb with driver 71 dart went 10.0's. Ive since then built the 512 all the same stuff heads, cam, headers gears, ect. Best so far 9.88 @ 136. I sure wish I had max wedge runner now though

Re: head swap to B1 BS HP gain? [Re: blownzoom440] #574117
01/09/10 11:53 AM
01/09/10 11:53 AM
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Akron, Ohio U.S.A.
roadhazard Offline
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MetalStorm
I can't say what was gained because you know I have Factory Iron
However I found this link in a post today. Hope it helps.

http://users.erols.com/srweiss/tablehdc.htm#Chrysler_Big_Block

By the way the B1-BS will be my next set of heads

EDITED: forgot to put in the link

Last edited by roadhazard; 01/09/10 11:55 AM.
Re: head swap to B1 BS HP gain? [Re: blownzoom440] #574118
01/09/10 12:18 PM
01/09/10 12:18 PM
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Posts: 4,003
Shelby Twp. Mi
HardcoreB Offline
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Quote:

ported or just cleanedup what did you gain in HP,ET or MPH.you can list your combo if you like but i am just lookinfg for results.
Thanks for any info.



As stated already the chambers are small. Can I assume that you will have to open the chambers to acheive your desired C/R? Off the top of my head the chambers have a good amount of "unnecessary" material. Which will cater to your advantage for flow increase. I want to say you can acheive 76+cc in an unmilled head while only sacrificing C/R.$$$

Re: head swap to B1 BS HP gain? [Re: HardcoreB] #574119
01/09/10 12:38 PM
01/09/10 12:38 PM
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Shelby Twp. Mi
HardcoreB Offline
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Also IMO there is no magic/phenomenon about these heads. That would make them unique in performance than any other head. It is well documented the rockers are no better than the Indys. And the sparkplug placement is not a 'good' thing because, they are not angled.$$$ Oil accumulates in the valvetrain area and makes a huge mess when removing the valvecovers unless the heads get modified. Valves and guides are unique and that makes them expensive.$$$ Unless they have evolved since these issues I don't consider them a practicle choice considering the other heads available. But I'd guess you've already made your choice. I am just stating facts you may not yet realise.

Re: head swap to B1 BS HP gain? [Re: HardcoreB] #574120
01/09/10 12:57 PM
01/09/10 12:57 PM
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NE Oklahoma
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Von Offline
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[quoteI want to say you can acheive 76+cc in an unmilled head while only sacrificing C/R.$$$




My heads were opened up to 69.7 before milling.


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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