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Best Head for a 540 with a 4.375 bore?
#1139670
12/19/11 10:28 PM
12/19/11 10:28 PM
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Joined: Nov 2010
Posts: 37
usa
90ram
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OP
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usa
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I have a 540 Wedge, Its a 4.375 Bore and 4.5 Stroke.. Giving some thought to a Head change.. I currently have Indy 572-13 CNC 365 Heads from Indy Thought about Original B-1s but will they make anymore Power? I know the B-1MC are alot better..But They say the B-1MC will not work on a 4.375 Bore. I do not want to change Bore because I have to Stay at 540 CI 
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Re: Best Head for a 540 with a 4.375 bore?
[Re: 90ram]
#1139672
12/20/11 01:37 PM
12/20/11 01:37 PM
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Joined: Jan 2003
Posts: 19,380
Las Vegas
Al_Alguire
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I Live Here
Joined: Jan 2003
Posts: 19,380
Las Vegas
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Building a torque monster motor there I see. IMO I would not consider anything but B1's. With that small bore the originals may be the best choice. They are no slouch head in the right hands they can make very good power. My 511" in the Valaint had B1 originals and went 9.0's at 3470lbs on motor. Pretty mild combo, just good heads.
"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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Re: Best Head for a 540 with a 4.375 bore?
[Re: Al_Alguire]
#1139673
12/20/11 03:04 PM
12/20/11 03:04 PM
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Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
MRMOPAR622
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Sweet Home Alabama
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I think you would be better spending your $$$ some where else to gain more power. With the 540 you have if in fact the B1 heads will flow more than the 572-13 heads,I don't think they would help any. With the B1 heads you will also have to change piston's and camshaft. If you feel bigger heads are a must,it would be best to up grade your small 572-13 heads.
"To Be The Man'You Have Got To Beat The Man"
"T/D and Pro-Bracket Racer"
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Re: Best Head for a 540 with a 4.375 bore?
[Re: 90ram]
#1139675
12/20/11 03:40 PM
12/20/11 03:40 PM
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Joined: Aug 2003
Posts: 43,272
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,272
Bend,OR USA
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Are you using a stock block or a race block? If a stock block maybe you should stay with what you have instead of making more power and possibly breaking the main webs If a race block the B1 are awesome  I had Koffels port mine, they flow 420 CFM from .600 to .900 on the intake side 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Best Head for a 540 with a 4.375 bore?
[Re: Cab_Burge]
#1139676
12/20/11 05:04 PM
12/20/11 05:04 PM
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Joined: Nov 2010
Posts: 37
usa
90ram
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Quote:
Are you using a stock block or a race block? If a stock block maybe you should stay with what you have instead of making more power and possibly breaking the main webs If a race block the B1 are awesome I had Koffels port mine, they flow 420 CFM from .600 to .900 on the intake side
No, I'm using a Cast Iron World Block
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Re: Best Head for a 540 with a 4.375 bore?
[Re: 90ram]
#1139680
12/20/11 10:42 PM
12/20/11 10:42 PM
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Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto
Trophy Winner
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Trophy Winner
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Plymouth Meeting, PA
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change the stroke, bore the motor out to 4.5 and keep the heads
BB, TT5,Procharged 3300lb Street Car 4.79/154
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Re: Best Head for a 540 with a 4.375 bore?
[Re: 90ram]
#1139682
12/20/11 11:16 PM
12/20/11 11:16 PM
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Joined: Jan 2003
Posts: 31,061
Oregon
AndyF
I Win
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I Win
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Oregon
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If you just want to make more power without spending a ton of money changing the combination then there are plenty of things to work on.
Vacuum pump, dry sump, more rocker arm ratio, better camshaft, better intake manifold, bigger carb, different fuel, different ring package, etc. I'm pretty sure a good engine builder could find another 100 hp in your existing combo given enough time and money.
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Re: Best Head for a 540 with a 4.375 bore?
[Re: AndyF]
#1139683
12/20/11 11:38 PM
12/20/11 11:38 PM
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Joined: Nov 2010
Posts: 37
usa
90ram
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usa
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Quote:
The 572-13 head requires a 4.500 bore size according to Indy. I wonder if they notch the bores to put it on a 4.375 bore?
It is odd that they would sell that combination when a 4.50 bore with 4.25 stroke would fit in a World block and make more power.
You do realize that your existing engine is too big for the rules? If the tech guy is paying attention they'll bounce you for being oversize.
I have no notch in My bore, The Indy CNC 365 572-13 is Made for a 4.375 bore.. The CNC 385 572-13 requires 4.500 bore.. the 2 Heads have different Valve Spacing..
We are allowed 1% on Cubes witch is 545.4..
A 4.375 Bore x 4.500 Stroke is 541 CI
.Are You calling that oversize? 
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Re: Best Head for a 540 with a 4.375 bore?
[Re: 90ram]
#1139684
12/21/11 12:07 AM
12/21/11 12:07 AM
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Joined: Oct 2010
Posts: 295
Greensburg, Pa
Mpetros
enthusiast
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enthusiast
Joined: Oct 2010
Posts: 295
Greensburg, Pa
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Quote:
Quote:
The 572-13 head requires a 4.500 bore size according to Indy. I wonder if they notch the bores to put it on a 4.375 bore?
It is odd that they would sell that combination when a 4.50 bore with 4.25 stroke would fit in a World block and make more power.
You do realize that your existing engine is too big for the rules? If the tech guy is paying attention they'll bounce you for being oversize.
I have no notch in My bore, The Indy CNC 365 572-13 is Made for a 4.375 bore.. The CNC 385 572-13 requires 4.500 bore.. the 2 Heads have different Valve Spacing..
We are allowed 1% on Cubes witch is 545.4..
A 4.375 Bore x 4.500 Stroke is 541 CI
.Are You calling that oversize?
 4.375x4.5 =541CI, Bore xBore xStroke x8 x .7854 = CI.. 4.375x4.375x4.5x8x.7854=541 CI..Also Indy has 2 versions of 572-13, both with diff Valve Spacing to fit 4.375 and 4.5 bore.
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Re: Best Head for a 540 with a 4.375 bore?
[Re: robnbird]
#1139686
12/21/11 12:20 AM
12/21/11 12:20 AM
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Joined: Oct 2004
Posts: 5,619
long island NY
Ari440
master
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master
Joined: Oct 2004
Posts: 5,619
long island NY
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with a 4.375 bore are you guys using a stock block ,to make a 541ci
1.39 9.85 - 137 mph
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Re: Best Head for a 540 with a 4.375 bore?
[Re: Ari440]
#1139687
12/21/11 12:41 AM
12/21/11 12:41 AM
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Joined: Oct 2010
Posts: 295
Greensburg, Pa
Mpetros
enthusiast
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enthusiast
Joined: Oct 2010
Posts: 295
Greensburg, Pa
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Quote:
with a 4.375 bore are you guys using a stock block ,to make a 541ci
Mine is a Cast Iron World Block, Most that I have seen where The Mega Block or World Block.. I knew a Guy that used a Stock Block Filled to make a 541 with -1 Heads, But His Block ended up Breaking
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Re: Best Head for a 540 with a 4.375 bore?
[Re: Mpetros]
#1139688
12/21/11 01:22 PM
12/21/11 01:22 PM
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Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
MRMOPAR622
top fuel
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top fuel
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Posts: 2,008
Sweet Home Alabama
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Like someone said the 4.50 X 4.25 would make more power,but maybe not enough for the $$$ to change to that combo.. This is one of the best cams I have found so far for the 528-540 cu in range,it may be Indy's special cam a Cam-Motion R2826-2862-12 install it @ 108 and set the valve lash Hot @ .012. A 1050 King Demon carb. sq jetted @ 93 with a 2" spacer on the intake will also work good. Start with the timing @ 35 degrees & change it to you find what the engine wants,next maybe a gear change or different converter may help. Try some Champion C59CX plugs gapped @ .025,work with your tune up till you max it out. You may be surprised at how much more you can get out of your combo. with minor changes.
I'm always looking for way's to make what I have run better,that cost less than just throwing $$$ at parts.
I hear a lot about B1 heads flow # but never HP # and have read about some fast B1 engines,but at the track all of the Fast Mopars have Indy heads!! I'll take the Indy Heads any day over the B1 heads.
"To Be The Man'You Have Got To Beat The Man"
"T/D and Pro-Bracket Racer"
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