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Advice for heads. #1748755 02/07/15 11:13 PM 02/07/15 11:13 PM
Joined: May 2009 Posts: 39 south dakota C correctdirection OP member
correctdirection OP member C Joined: May 2009 Posts: 39 south dakota	I have exceeded the limits of my Stealth heads and trying to figure out what way to go next. My combo is a 500" stroked 440, 10.1 comp. Got a deal last year on a Bullet roller cam .668 lift 260 duration @.050. Engine is in a 68 Dart. Looking for any input on what head to go with or where to buy at. Or thoughts on porting my Stealth,they flow 250 at .600 lift now. Two valve guides are broke now, makes me a little nervous about them now. Any input is appreciated. Thanks.

Re: Advice for heads. [Re: correctdirection] #1748756 02/08/15 04:38 AM 02/08/15 04:38 AM
Joined: Aug 2003 Posts: 43,286 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,286 Bend,OR USA	Step up to a set of heads(and intake manifold ) with the Max Wedge size intake ports My CNC Eddy RPM flowed 310 @ .600 and .700, my unported Indy SR with M.W. size intakes flowed 340 CFM at the same valve opening. I sent a set of B1-BS heads with stock 440 port sizes to Modern Cylinder heads for thier CNC porting and those heads flowed 350 CFM at .600 to .800 More air and fuel ,more power Get the biggest set you can afford and find now instead of later Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Advice for heads. [Re: correctdirection] #1748757 02/08/15 05:40 AM 02/08/15 05:40 AM
Joined: Jul 2009 Posts: 494 IL E EchoSixMike mopar
EchoSixMike mopar E Joined: Jul 2009 Posts: 494 IL	Budget? Goals? Class rules? Car setup? Any legacy parts you want to keep? S/F.....Ken M

Re: Advice for heads. [Re: EchoSixMike] #1748758 02/08/15 11:52 AM 02/08/15 11:52 AM
Joined: Feb 2005 Posts: 4,318 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,318 Prospect, PA	Quote: Budget? Goals? Class rules? Car setup? Any legacy parts you want to keep? S/F.....Ken M What he said. What does the car run now?

Re: Advice for heads. [Re: correctdirection] #1748759 02/08/15 01:49 PM 02/08/15 01:49 PM
Joined: May 2009 Posts: 39 south dakota C correctdirection OP member
correctdirection OP member C Joined: May 2009 Posts: 39 south dakota	Car runs 11:0s with a best of 10:98 at 118 mph. Lazy on top end. Would like to see 10:60 out of car for now. Just a bracket car so no rules really apply. Edelbrock Torker intake, 1000cfm double pumper on e85, 727 with 8" conv. that flashes to 5100, 410 rear with 29.5 tire. Doing some internet research and kind of leaning toward Indy EZ or SR heads now. Thinking something that can be improved on at a later time if and when I want more hp. As we all know we always end up wanting to go faster! Last edited by correctdirection; 02/08/15 01:56 PM.

Re: Advice for heads. [Re: correctdirection] #1748760 02/08/15 01:55 PM 02/08/15 01:55 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Car runs 11:0s with a best of 10:98 at 118 mph. Lazy on top end. Would like to see 10:60 out of car for now. Just a bracket car so no rules really apply. 727 with 8" conv. that flashes to 5100, 410 rear with 29.5 tire. Doing some internet research and kind of leaning toward Indy EZ or SR heads now. Thinking something that can be improved on at a later time if and when I want more hp. As we all know we always end up wanting to go faster! What is your trap RPM now

Re: Advice for heads. [Re: MR_P_BODY] #1748761 02/08/15 02:00 PM 02/08/15 02:00 PM
Joined: May 2009 Posts: 39 south dakota C correctdirection OP member
correctdirection OP member C Joined: May 2009 Posts: 39 south dakota	Trap rpm is about 6100 rpm. Been shifting from 6000 to 6400. As it is now it likes 6100-6200 the best.

Re: Advice for heads. [Re: correctdirection] #1748762 02/08/15 02:10 PM 02/08/15 02:10 PM
Joined: Jan 2003 Posts: 4,852 KENTUCKY 69CHARGERMD master
69CHARGERMD master Joined: Jan 2003 Posts: 4,852 KENTUCKY	I run edelbrock rpm heads, 1050 dominator, solid cam, 3400 lb car,,,best ET was 10.04

Re: Advice for heads. [Re: correctdirection] #1748763 02/08/15 02:51 PM 02/08/15 02:51 PM
Joined: Feb 2005 Posts: 4,318 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,318 Prospect, PA	Not sure about your elevation or car weight, but I would think that ported Stealth's and a good tune would put you in the mid to low tens. Milling the Stealth's and/or a head with a smaller chamber to get to 11:1 will help performance too.

Re: Advice for heads. [Re: BSB67] #1748764 02/08/15 03:22 PM 02/08/15 03:22 PM
Joined: Mar 2006 Posts: 9,910 Eighty Four, PA B G Racing master
B G Racing master Joined: Mar 2006 Posts: 9,910 Eighty Four, PA	If your budget allows,skip right up to a set of 440-1s,then if you ever want to build bigger they will work with most combs even up to a 572".As far as pricing between -1s,SRs and EZs with max wedge ports they are all within a few hundered dollars of each other. [IMG]http://i430.photobucket.com/albums/qq21/ajcasini/max_zpsdppwd9km.jpg[/IMG]

Re: Advice for heads. [Re: correctdirection] #1748765 02/08/15 03:38 PM 02/08/15 03:38 PM
Joined: Oct 2011 Posts: 559 Idaho L LaRoy Engines mopar
LaRoy Engines mopar L Joined: Oct 2011 Posts: 559 Idaho	Stealth or RPM heads when prepared properly will flow in the 340-345 cfm range @ .700" lift. There are multiple CNC programs that take them into the 320 cfm range @ .700" lift. If you feel you will need more than that in the future it is best to purchase better flowing ported heads like the Victor, INDY or Brodix. Our 451 with RPM heads made 723HP on Comp Cams dyno running on 93 octane and with a cam change back home and 91 octane it made 787 HP.

Re: Advice for heads. [Re: correctdirection] #1748766 02/08/15 05:17 PM 02/08/15 05:17 PM
Joined: Jan 2003 Posts: 31,073 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,073 Oregon	Depends on how much money you have invested in your rocker arms, headers and intake manifold. If you switch to MW heads then you'll need to change a fair number of parts. You shouldn't have any problem going low 10's with std port heads so if that is where you want to race then stick with what you have and dial in the combination. Sounds like your heads need porting and you probably need more compression to work with E-85 at your altitude.

Re: Advice for heads. [Re: AndyF] #1748767 02/08/15 05:55 PM 02/08/15 05:55 PM
Joined: Feb 2006 Posts: 608 TN 1DGEMAN mopar
1DGEMAN mopar Joined: Feb 2006 Posts: 608 TN	It looks to me like you ought to save your money and work on the using the power you have. Maybe a better tune up. There are 3300 pound cars running 8.5 to compression 340's running 10.60's on 9inch tires in stock eliminator. Surely a 500 inch bb should run as quick. Work on your chassis and tune up save your money. Get the power to the ground. Real Men shift for themselves

Re: Advice for heads. [Re: LaRoy Engines] #1748768 02/08/15 06:46 PM 02/08/15 06:46 PM
Joined: Jun 2006 Posts: 5,166 CT GTX MATT master
GTX MATT master Joined: Jun 2006 Posts: 5,166 CT	Quote: Our 451 with RPM heads made 723HP on Comp Cams dyno running on 93 octane and with a cam change back home and 91 octane it made 787 HP. Can you tell us more about it? Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street

Re: Advice for heads. [Re: 1DGEMAN] #1748769 02/08/15 08:14 PM 02/08/15 08:14 PM
Joined: Aug 2003 Posts: 43,286 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,286 Bend,OR USA	Quote: It looks to me like you ought to save your money and work on the using the power you have. Maybe a better tune up. There are 3300 pound cars running 8.5 to compression 340's running 10.60's on 9inch tires in stock eliminator. Surely a 500 inch bb should run as quick. Work on your chassis and tune up save your money. Get the power to the ground. [/quote} The part you forgot to include on your post about them stockers on 9 inch tires running as fast as they do is "They open the doors of those cars and stuff it full of ten thousand dollar parts before starting to build those cars" Been there done that, bracket racing is way cheaper and easier to make a car run like those cars do OP, have fun Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Advice for heads. [Re: correctdirection] #1748770 02/08/15 10:27 PM 02/08/15 10:27 PM
Joined: Jan 2003 Posts: 31,073 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,073 Oregon	My buddy had a '72 Duster with a stock stroke 400 in it. The 400 had good compression, ported Edelbrock heads and a street roller cam. That car went 10.90's on street tires with a full exhaust and full interior. Drove it to the track and ran low 11's or high 10's depending on the weather. So I'm thinking that you should not have any trouble running low 10's if you get those heads ported. You might have some other problems such as poor fuel flow, slipping trans, poor traction, bad ignition, etc. I don't think you need to spend a bunch of money on Max Wedge heads or anything like that. No reason at all that an A-body bracket racer with 500 inches can't run low 10's all day long.

Re: Advice for heads. [Re: correctdirection] #1748771 02/08/15 11:06 PM 02/08/15 11:06 PM
Joined: Jan 2003 Posts: 75,089 A Banana Republic near you. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,089 A Banana Republic near you.	Quote: I have exceeded the limits of my Stealth heads and trying to figure out what way to go next. My combo is a 500" stroked 440, 10.1 comp. Got a deal last year on a Bullet roller cam .668 lift 260 duration @.050. Engine is in a 68 Dart. Looking for any input on what head to go with or where to buy at. Or thoughts on porting my Stealth,they flow 250 at .600 lift now. Two valve guides are broke now, makes me a little nervous about them now. Any input is appreciated. Thanks. The cheapest thing to do would be to port, and fix the heads, you have , 250cfm is about the same as a stage 2 ported 906 head. Otherwise if you want to buy a better head step up , but be warned you may have to buy a new intake , rockers as noted , if your change is to a roller from a flat tappet that is going to add to the cost also.

Re: Advice for heads. [Re: GTX MATT] #1748772 02/08/15 11:17 PM 02/08/15 11:17 PM
Joined: Oct 2011 Posts: 559 Idaho L LaRoy Engines mopar
LaRoy Engines mopar L Joined: Oct 2011 Posts: 559 Idaho	Quote: Quote: Our 451 with RPM heads made 723HP on Comp Cams dyno running on 93 octane and with a cam change back home and 91 octane it made 787 HP. Can you tell us more about it? The 451 at Comp Cams More from the Challenge And this. Last edited by LaRoy Engines; 02/08/15 11:39 PM.

Re: Advice for heads. [Re: Cab_Burge] #1748773 02/09/15 05:25 AM 02/09/15 05:25 AM
Joined: Sep 2010 Posts: 170 renton , washington P perfmachst member
perfmachst member P Joined: Sep 2010 Posts: 170 renton , washington	Quote: Quote: It looks to me like you ought to save your money and work on the using the power you have. Maybe a better tune up. There are 3300 pound cars running 8.5 to compression 340's running 10.60's on 9inch tires in stock eliminator. Surely a 500 inch bb should run as quick. Work on your chassis and tune up save your money. Get the power to the ground. [/quote} The part you forgot to include on your post about them stockers on 9 inch tires running as fast as they do is "They open the doors of those cars and stuff it full of ten thousand dollar parts before starting to build those cars" Been there done that, bracket racing is way cheaper and easier to make a car run like those cars do OP, have fun you mean, you build high dollar 500 inch motors with cnc ported heads high dollar cranks , rods and pistons, roller cams and its cheaper?? also you pay more for big tires, chassis parts. I think you're bit off base. I seen more money spent on bracket cars. there are the faster newer stockers, are expensive, true. older cars not close.

Re: Advice for heads. [Re: perfmachst] #1748774 02/09/15 09:03 AM 02/09/15 09:03 AM
Joined: Feb 2006 Posts: 608 TN 1DGEMAN mopar
1DGEMAN mopar Joined: Feb 2006 Posts: 608 TN	The point I was trying to make is the car should be quicker. It is a common mistake to think you need more HP when you need to refine what you have. Either his tune up is way off or his chassis or drive train is inefficient. Cab we raced together in the old days. I was there when you got tossed for sanblasted ports in your Hemi stocker. I have never had more than 15k invested in one of my cars and have set numerous records in Stock. Real Men shift for themselves

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