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Horsepower gain from eddie Alum. heads #421091 07/27/09 10:41 PM 07/27/09 10:41 PM
Joined: Oct 2005 Posts: 337 Missouri C Confusedcuda OP enthusiast
Confusedcuda OP enthusiast C Joined: Oct 2005 Posts: 337 Missouri	Hey guy's, gotta a question. I have a 1971 340 in my 67 cuda. It may have 4,000 or 5,000 miles on the engine and runs really well. It right now has TRW forged pistons and I am somewhere around 9:1 to 9:3:1 compr.. If I take my J heads off, and add some eddie Alumn. heads, what kind of horsepower gain am I looking at and what comp. ratio will I be at with the smaller comb. chambers? Is it worth the dollars? I will be able to do this and leave the engine in the car which is a nice appeal, but they are expensive. What do you guys think? Thanks

Re: Horsepower gain from eddie Alum. heads [Re: Confusedcuda] #421092 07/27/09 10:45 PM 07/27/09 10:45 PM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	Depends, what's the rest of the combo? Cam, intake, exhaust?

Re: Horsepower gain from eddie Alum. heads [Re: DaytonaTurbo] #421093 07/27/09 11:12 PM 07/27/09 11:12 PM
Joined: Oct 2005 Posts: 337 Missouri C Confusedcuda OP enthusiast
Confusedcuda OP enthusiast C Joined: Oct 2005 Posts: 337 Missouri	Right now I have, headers, a pretty good size purple cam, mopar hipo ign., I have a eddie RPM intake, I would probably go with the air gap if I went this route and a bigger carb. Right now I have a eddie Thunder 650 cfm.

Re: Horsepower gain from eddie Alum. heads [Re: Confusedcuda] #421094 07/27/09 11:54 PM 07/27/09 11:54 PM
Joined: Oct 2005 Posts: 337 Missouri C Confusedcuda OP enthusiast
Confusedcuda OP enthusiast C Joined: Oct 2005 Posts: 337 Missouri	Bump

Re: Horsepower gain from eddie Alum. heads [Re: Confusedcuda] #421095 07/28/09 12:30 AM 07/28/09 12:30 AM
Joined: Aug 2006 Posts: 1,609 Southern Cal Noblewk top fuel
Noblewk top fuel Joined: Aug 2006 Posts: 1,609 Southern Cal	No one can give you a "Real" answer because there is just too many unknowns about your current set up. ~9 to 1, Headers, RPM Intake, pretty big cam...... The Eddies out of the box flow better then the stock J heads and also have more potential then the J heads with a good porter. The Eddies will gain you about 50 Lbs off the front wheels also. $$$$ that is the real question... Are they worth it? Only you can answer that question. 66 Dart GT, 402 11.18:109 Best 63 1/2 Galaxie 500XL 406 4Speed 13.20:103 Best 2000 Ram 2005 Durango Hemi.

Re: Horsepower gain from eddie Alum. heads [Re: Noblewk] #421096 07/28/09 07:22 AM 07/28/09 07:22 AM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: No one can give you a "Real" answer because there is just too many unknowns about your current set up. ~9 to 1, Headers, RPM Intake, pretty big cam...... The Eddies out of the box flow better then the stock J heads and also have more potential then the J heads with a good porter. The Eddies will gain you about 50 Lbs off the front wheels also. $$$$ that is the real question... Are they worth it? Only you can answer that question. Good points...Are your pistons above or below the deck? How much? There are two different chambers available for the SB. When I switched, I made much more HP and the weight savings is really nice. Definitly worth it to me.

Re: Horsepower gain from eddie Alum. heads [Re: Confusedcuda] #421097 07/28/09 08:51 AM 07/28/09 08:51 AM
Joined: Jun 2003 Posts: 190 Wilmington,NC I I go fast member
I go fast member I Joined: Jun 2003 Posts: 190 Wilmington,NC	I would base you question on your initial goal/intentions.On a street driven vehicle,I think spending money on race parts is a waste unless you plan on some weekend racing thrown in.Now if you have an ego thing and want to flaunt how much HP you have then that's a different story.It's your money,your choice but common sense does have it's place also.Years ago I spent a lot of money for just the same thing and had motors that I probably never turned over 5500rpm.You can do that with a stock motor.Once again,your money/your choice.

Re: Horsepower gain from eddie Alum. heads [Re: Challenger 1] #421098 07/28/09 08:57 AM 07/28/09 08:57 AM
Joined: Jan 2003 Posts: 3,329 Melbourne, FL dwbiggs super gas
dwbiggs super gas Joined: Jan 2003 Posts: 3,329 Melbourne, FL	Eddied will let you run a higher compression/bigger cam w/o detonation worries. I run 10.5:1 and doubt I could run the combo using iron heads.

Re: Horsepower gain from eddie Alum. heads [Re: I go fast] #421099 07/28/09 08:58 AM 07/28/09 08:58 AM
Joined: Jan 2003 Posts: 7,861 Witness Protection Program Kudakidd master
Kudakidd master Joined: Jan 2003 Posts: 7,861 Witness Protection Program	40 hp would be a 'safe' assumption.

Re: Horsepower gain from eddie Alum. heads [Re: I go fast] #421100 07/28/09 09:45 AM 07/28/09 09:45 AM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: I think spending money on race parts is a waste unless you plan on some weekend racing thrown in. I don't consider Eddie heads to be race heads, just good replacement heads.

Re: Horsepower gain from eddie Alum. heads [Re: Challenger 1] #421101 07/28/09 10:12 AM 07/28/09 10:12 AM
Joined: Oct 2005 Posts: 337 Missouri C Confusedcuda OP enthusiast
Confusedcuda OP enthusiast C Joined: Oct 2005 Posts: 337 Missouri	Thank You guys. Do you think my carb is to small, for a 340 with J heads. A eddie Thunder 650 vac sec.

Re: Horsepower gain from eddie Alum. heads [Re: Confusedcuda] #421102 07/28/09 10:58 AM 07/28/09 10:58 AM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	Quote: Do you think my carb is to small, for a 340 with J heads. A eddie Thunder 650 vac sec. With stock unported heads, that 650 will do you fine. If you were to upgrade to the eddy's I would step up to a 750.

Re: Horsepower gain from eddie Alum. heads [Re: Confusedcuda] #421103 07/28/09 12:12 PM 07/28/09 12:12 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	No not at all, my 340 with eddie heads have a 600 carb. It runs great on the street.

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