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Author
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Topic: Help me choose some heads
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66bluefb
Gearhead Posts: 509
From: Okla.City,Okla.
Registered: May 2002
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posted 11-20-2003 07:41 PM
   
I am looking to buy some aftermarket heads.I want to buy some heads with the least amount of extra parts that I would have to buy.Like headers,pushrods,I already have harden pushrods.Thanks,Tony------------------
http://ourworld.cs.com/blagintony/myhomepage/auto.html
86-302 HO bored .030 over crank .010 under,
B-303 cam ,harland sharp roller rockers,
performer rpm intake, 625 carter
66-289 heads, ported with 160-194 valves, 3 angle valve job,
4 speed toploader,granada disc brakes, 85 duraspark ignition, pony interior,the who,the doors,and ccr full blast on the stereo
IP: Logged |
Moneymaker
Administrator Posts: 26813
From: Lyons, IL, USA
Registered: May 99
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posted 11-20-2003 07:48 PM
Edelbrock Performers and ditch the Jimmy Carter carb.  ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,&'03
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
IP: Logged |
66bluefb
Gearhead Posts: 509
From: Okla.City,Okla.
Registered: May 2002
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posted 11-20-2003 08:46 PM
Can I keep my headers?------------------
http://ourworld.cs.com/blagintony/myhomepage/auto.html
86-302 HO bored .030 over crank .010 under,
B-303 cam ,harland sharp roller rockers,
performer rpm intake, 625 carter
66-289 heads, ported with 160-194 valves, 3 angle valve job,
4 speed toploader,granada disc brakes, 85 duraspark ignition, pony interior,the who,the doors,and ccr full blast on the stereo
IP: Logged |
indyphil
Gearhead Posts: 2690
From: Senoia, G.A. USA
Registered: Jul 2002
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posted 11-20-2003 08:58 PM
You might want to think about the AFR heads, a little more money but:
according to the tests I have seen they have a little more grunt than the edelbrocks down around 2-3000RPM.They come with a 58cc combustion chamber, which will be handy for keeping compression up on an aluminum head. Depends on if you want the extra compression or not. They do cost more and some say the valvesprings are below par. Just a thought. Also if you want to sell the heads you have now, I would be interested. Hey Alex, how much power and torque do you think a holley would add over the carterbrock carb? I have a 625 also. ------------------
'68 coupe 289 C code
66 heads, edel 600cfm carb, performer intake, dual exhaust http://www.geocities.com/ottouk_77/68mustang.htm
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66bluefb
Gearhead Posts: 509
From: Okla.City,Okla.
Registered: May 2002
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posted 11-20-2003 09:21 PM
Indyphil,I dont know what high and low compresson does?I have been thinking about ederbrocks or AFR`s.I`ll let you know when I sell my 66 heads.------------------
http://ourworld.cs.com/blagintony/myhomepage/auto.html
86-302 HO bored .030 over crank .010 under,
B-303 cam ,harland sharp roller rockers,
performer rpm intake, 625 carter
66-289 heads, ported with 160-194 valves, 3 angle valve job,
4 speed toploader,granada disc brakes, 85 duraspark ignition, pony interior,the who,the doors,and ccr full blast on the stereo
IP: Logged |
Mooney
Gearhead Posts: 1943
From: Marietta, Ga
Registered: Oct 2003
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posted 11-20-2003 09:33 PM
I always hear everyone talking about how good their holley is and how much they dislike their carter.. no one ever mentions the edelbrock performer carbs... why is this?
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RaSMG
Journeyman Posts: 27
From: Central CA
Registered: Jun 2003
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posted 11-20-2003 09:57 PM
edelbrock bought carter and used their design .. most people generally regard the edelbrocks as carters and vice versa .. same thing similar to holey/demon.
IP: Logged |
Mooney
Gearhead Posts: 1943
From: Marietta, Ga
Registered: Oct 2003
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posted 11-20-2003 11:21 PM
Ahh okay, thanks for clearing that up.. Now for the inevitable question, why are holleys so much better than carters?
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kcode
Gearhead Posts: 3232
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 11-21-2003 12:36 AM
If you swap heads, don't make the assumption that your current hardened pushrods will be the correct length. Check the roller contact patch on the valve stem.  Mike
IP: Logged |
indyphil
Gearhead Posts: 2690
From: Senoia, G.A. USA
Registered: Jul 2002
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posted 11-21-2003 08:06 AM
66bluefb
Aluminum heads transfer heat faster than Iron. When the engine compresses the mixture and burns it, some of that heat escapes before the work is done on the piston to turn the crank. More of that heat escapes with aluminum headed engines. The results is that aluminum heads although breath better, often dont get their full potential unless you have at least 10:1 compression ratio. Most run 10.5 or higher.
With these engines the compression ratio is a result of many things... but what you use to control compression is either piston design, or combustion chamber volume in the heads. You can fine tune compression with head gasket thickness too. since you already have pistons chamber volume will determine the compression ratio in your case, and thats why 58cc AFR heads might be better than 60cc. However if you bought edelbrock heads (with 60cc chambers), than had someone machine some material off the bottom you could achieve the desired chamber volume. Would it cost as much as the AFR heads by the time you spend the money at the machine shop? I dont know - probably not. According to all the recent articles the AFR will have a little more power and torque than edelbrock, but its a very close thing.The compression ratio ultimatley will determine what fuel you need to run. 10:1 with aluminum heads and you should still be able to get by with 87 or 89 octane pump gas depending on what timing you want to run. Im afraid I only know the basics and I cant tell exactly what chamber volume you should aim for with what gaskets to get what compression. Heck 58cc might be too small for you I dont really know. Just wanted you to remember that AFR heads come with a choice of port volume and chamber volume. And remember people have complained about the valve springs on AFR heads. Im sure that both AFR and edelbrock are bolt ons that dont require fancy headers. ------------------
'68 coupe 289 C code
66 heads, edel 600cfm carb, performer intake, dual exhaust http://www.geocities.com/ottouk_77/68mustang.htm
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Moneymaker
Administrator Posts: 26813
From: Lyons, IL, USA
Registered: May 99
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posted 11-21-2003 10:14 AM
quote:
Originally posted by RaSMG:
edelbrock bought carter and used their design .. most people generally regard the edelbrocks as carters and vice versa .. same thing similar to holey/demon.
Edelbrock did not buy Carter. 
Federal Mogul bought Carter. Carter carbs are still produced and sold under the Carter brand.
Edelbrock partnered up with Weber who under license from Carter engineered a copycat version of the AFB. This was due to a dispute with Holley over them getting into the intake manifold business. (Very long story and a strike was involved also)
BG just out and out copied the Holley design, cheapened it, and began producing their knock off style carbs. There is a continuing law suit pending.
Carter/Edelbrock carbs are great! The idle well, they are easy to service, and are very simple.
The down side is that they are limited on their performance potential.
Due to their limited sophistication, they pretty much just dump air/fuel into the intake. (an over simplification)
They belong on street rods, show cars, garage queens, dump trucks and school busses.
If you only want your car to start and drive, a Jimmy Carter/Edelbrock is probably a good choice.
Holleys on the other hand have unlimited tuning, fuel capacity, great trasition circuits, parts availability, and more, and more, and more.
If you want to realize your engines FULL power potential, a well chosen Holley is the only way to go.
------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,&'03
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
IP: Logged | |
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