|
Re: max wedge B1BS heads max cubic inch
[Re: 71Pan]
#1408175
03/24/13 07:02 PM
03/24/13 07:02 PM
|
Joined: Feb 2005
Posts: 20,185
PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
|
Not real sure on the cubic inch but PM B1max as he has a nice running 9 second dart with B1Bs heads. This car is also using B1Bs heads.
There are plenty of guys making the switch and running the same or a hair better. The old wives tell keeps lots of guys from making the switch from iron to aluminum even in bracket type cars were it isn't really an issue. My buddy 68 charger was getting about 2 years out of a stock block and finally stepped up to an Indy block. Tom Hemphile has always built Tim's engines and dyno'd everyone. The engine made 4 less horsepower after the change-over and consistently runs 8.50's-8.80's depending on the weather. Still the same cam, B1BS heads, weiand tunnel-ram, and 750 holley's that he's used for the last 20 plus years. No vacuum pump or anything fancy on his car. Tim's Toy is the name of the car and I'm sure some of you guys have seen it around. No more cracked blocks, runs the same or better, sounds like a win win to me. If anything the Keith Black block is even better.
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: max wedge B1BS heads max cubic inch
[Re: gregsdart]
#1408180
03/24/13 11:36 PM
03/24/13 11:36 PM
|
Joined: Jul 2010
Posts: 417
reynoldsburg,ohio
poppaj
mopar
|
mopar
Joined: Jul 2010
Posts: 417
reynoldsburg,ohio
|
I have heavily ported B-1 Originals and run an alumium Keith Black block. I am at 557cu.in. but they will support at least 75 more cu.in. poppaj
AA/NSS 65'Coronet "Whompin Wedge"
Pop & Son Performance 557" B-1 power
John Holt Chassis
|
|
|
Re: max wedge B1BS heads max cubic inch
[Re: gregsdart]
#1408183
03/25/13 11:25 AM
03/25/13 11:25 AM
|
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
Clanton
master
|
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
|
Quote:
Quote:
I am sure there is a formula for figuring the ci limit for the head cfm.
I would bet you are right, with the power going up fast as the cubes increase, but power going down slow as the best point is passed. It is tough to screw up an under headed package, real easy to screw up an over headed package.
I agree and head port velocity/speed would increase to the choke point.I think on wallaceracing there is a calc on ci port speed.
|
|
|
Re: max wedge B1BS heads max cubic inch
[Re: poppaj]
#1408184
03/25/13 01:57 PM
03/25/13 01:57 PM
|
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
master
|
master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
|
Quote:
I have heavily ported B-1 Originals
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: max wedge B1BS heads max cubic inch
[Re: poppaj]
#1408186
03/25/13 03:26 PM
03/25/13 03:26 PM
|
Joined: Jun 2004
Posts: 6,780
Alabama
Mopar-Al
master
|
master
Joined: Jun 2004
Posts: 6,780
Alabama
|
Quote:
Quote:
Quote:
I have heavily ported B-1 Originals
Sorry, didn't notice they were B1BS, my bad  poppaj
You must of just got back from bingo and your nap. 
|
|
|
Re: max wedge B1BS heads max cubic inch
[Re: 71Pan]
#1408187
03/25/13 06:23 PM
03/25/13 06:23 PM
|
Joined: May 2005
Posts: 1,995
Apollo, PA.
B1MAXX
top fuel
|
top fuel
Joined: May 2005
Posts: 1,995
Apollo, PA.
|
Quote:
thinking about buying new block.What is the cube limit for this head. going in duster street car 3.54 gear.goal is to run mid to high nines on pump gas.I have to stick with these heads if I want to stayed married lol thanx
With 3.54 gears many cubes as you can get. My 512 seems to like 6500.
|
|
|
Re: max wedge B1BS heads max cubic inch
[Re: RT540]
#1408191
03/26/13 01:19 PM
03/26/13 01:19 PM
|
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
I Live Here
|
I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
|
With ANY cylinder head the cubic inch limit (point of diminishing returns) is gonna be directly proportional to how many RPM you want to turn. You could put bone stock 516 heads on a 572 CID motor if you are happy with 4000 RPM. As for the B1BS it is a big head and 3.54 is a pretty high gear and if you run a tall tire it needs even more TQ so run the cubes as big as you can, a 572 will not be too much 
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: max wedge B1BS heads max cubic inch
[Re: HotRodDave]
#1408195
03/26/13 02:52 PM
03/26/13 02:52 PM
|
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
master
|
master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
|
Quote:
As for the B1BS it is a big head
Compared to what?
I have a set of BS heads...IMO they arent what I would call a "Big" head. They are barely above a CNC'dRPM, CNC'd Stealth, etc.
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: max wedge B1BS heads max cubic inch
[Re: Von]
#1408196
03/26/13 03:15 PM
03/26/13 03:15 PM
|
Joined: Nov 2003
Posts: 1,664
North Sweden
RT540
top fuel
|
top fuel
Joined: Nov 2003
Posts: 1,664
North Sweden
|
Motor was built in -99, not in my ownership. Heads are now on another motor, and my 540 will have B1originals, not because I didnīt like it, but the go faster... MW Indy 440-1 intake 1050-9375 carb Wiseco 13:1 flat tops BME 426 7.15 rods Crane superstock grind Int 0.707" Exh 0.670 276° dur at 050 4.50 bore, 4.25 stroke Dry sump oil 
|
|
|
Re: max wedge B1BS heads max cubic inch
[Re: RT540]
#1408198
03/26/13 03:31 PM
03/26/13 03:31 PM
|
Joined: Jan 2012
Posts: 2,652
Stuttgart, Arkansas
rickseeman
master
|
master
Joined: Jan 2012
Posts: 2,652
Stuttgart, Arkansas
|
Nice. Within 1% of max power at 5900. 800 hp and no need to rev it high. My buddy has B1BS's and I like them.
2011 Drag Pak Challenger
|
|
|
|
|
, regardless of the heads 
