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#574101 - 01/05/10 04:50 PM head swap to B1 BS HP gain?
blownzoom440 Offline


Registered: 07/10/05
Posts: 8647
Loc: 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.

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#574102 - 01/08/10 04:43 PM Re: head swap to B1 BS HP gain? [Re: blownzoom440]
blownzoom440 Offline


Registered: 07/10/05
Posts: 8647
Loc: ELYRIA,OH

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#574103 - 01/08/10 07:01 PM Re: head swap to B1 BS HP gain? [Re: blownzoom440]
dbran451 Offline
mopar

Registered: 11/30/03
Posts: 625
Loc: 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.
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#574104 - 01/08/10 07:09 PM Re: head swap to B1 BS HP gain? [Re: dbran451]
Bob_Coomer Offline
super gas

Registered: 11/12/03
Posts: 6291
Loc: 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.
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#574105 - 01/08/10 07:30 PM Re: head swap to B1 BS HP gain? [Re: blownzoom440]
Cab_Burge Offline
Too Many Posts

Registered: 08/23/03
Posts: 24295
Loc: 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
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Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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#574106 - 01/08/10 07:58 PM Re: head swap to B1 BS HP gain? [Re: Cab_Burge]
blownzoom440 Offline


Registered: 07/10/05
Posts: 8647
Loc: ELYRIA,OH
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?

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#574107 - 01/08/10 08:02 PM Re: head swap to B1 BS HP gain? [Re: blownzoom440]
Von Offline
master

Registered: 10/15/03
Posts: 3565
Loc: NE Oklahoma
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.

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#574108 - 01/08/10 08:11 PM Re: head swap to B1 BS HP gain? [Re: Von]
blownzoom440 Offline


Registered: 07/10/05
Posts: 8647
Loc: ELYRIA,OH
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.


Attachments
5721962-100_1791.jpg (55 downloads)



Edited by METAL STORM (01/08/10 08:20 PM)

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#574109 - 01/08/10 08:32 PM Re: head swap to B1 BS HP gain? [Re: blownzoom440]
montessa Offline
member

Registered: 04/16/08
Posts: 137
Loc: 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.

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#574110 - 01/08/10 08:43 PM Re: head swap to B1 BS HP gain? [Re: montessa]
blownzoom440 Offline


Registered: 07/10/05
Posts: 8647
Loc: ELYRIA,OH
what was your MPH?
who did the dyno?
that is a good running combo!

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#574111 - 01/08/10 10:11 PM Re: head swap to B1 BS HP gain? [Re: blownzoom440]
Von Offline
master

Registered: 10/15/03
Posts: 3565
Loc: NE Oklahoma
[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.


Edited by Von (01/08/10 10:23 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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#574112 - 01/09/10 12:54 AM Re: head swap to B1 BS HP gain? [Re: blownzoom440]
451Mopar Offline
mopar addict

Registered: 05/19/08
Posts: 3800
Loc: 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.

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#574113 - 01/09/10 04:55 AM Re: head swap to B1 BS HP gain? [Re: 451Mopar]
blownzoom440 Offline


Registered: 07/10/05
Posts: 8647
Loc: ELYRIA,OH
great info!Thanks!

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#574114 - 01/09/10 07:41 AM Re: head swap to B1 BS HP gain? [Re: blownzoom440]
pittsburghracer Offline
master

Registered: 02/02/05
Posts: 7496
Loc: 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.
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#574115 - 01/09/10 07:47 AM Re: head swap to B1 BS HP gain? [Re: pittsburghracer]
supercomp Offline
master

Registered: 02/01/04
Posts: 3438
Loc: Mo.

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#574116 - 01/09/10 08:47 AM Re: head swap to B1 BS HP gain? [Re: supercomp]
B1MAXX Offline
mopar

Registered: 05/07/05
Posts: 501
Loc: Apollo, PA.
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

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#574117 - 01/09/10 08:53 AM Re: head swap to B1 BS HP gain? [Re: blownzoom440]
roadhazard Offline
master

Registered: 04/29/06
Posts: 3275
Loc: Akron, Ohio U.S.A.
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


Edited by roadhazard (01/09/10 08:55 AM)

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#574118 - 01/09/10 09:18 AM Re: head swap to B1 BS HP gain? [Re: blownzoom440]
HardcoreB Offline
top fuel

Registered: 01/20/03
Posts: 2358
Loc: Shelby Twp. Mi
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.$$$

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#574119 - 01/09/10 09:38 AM Re: head swap to B1 BS HP gain? [Re: HardcoreB]
HardcoreB Offline
top fuel

Registered: 01/20/03
Posts: 2358
Loc: Shelby Twp. Mi
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.

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#574120 - 01/09/10 09:57 AM Re: head swap to B1 BS HP gain? [Re: HardcoreB]
Von Offline
master

Registered: 10/15/03
Posts: 3565
Loc: NE Oklahoma
[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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