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eddy alum rpm heads with stock hp 440 manifolds
Posted By: hemigod426
eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 01:55 PM
does any one have this setup runing now,last night i switched the oe cast iron intake on my v-code super bee with an a-12 alum six pack intake to lighten it up. while the paint was dring, was thinking it would be cool with alum heads with stock manifolds. mocked up a manifold set to eddy rpm angle plug heads in the shop, driver side looks like it would work perfect, pass side is only close on #8,#6 plug to dump might grind pass manifold a bit? want to keep the manifolds on it,car is all oe except for wheels and radio
Posted By: HemiRick
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 02:36 PM
I dont understand.....
Posted By: JohnRR
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 02:41 PM
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I dont understand.....
i barely understand ...
but yes you can do it , Andy F did it on a low deck stroker with E heads , made 570 HP ...
Posted By: hemigod426
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 02:49 PM
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I dont understand.....
i barely understand ...
but yes you can do it , Andy F did it on a low deck stroker with E heads , made 570 HP ...
ok thats what im looking for someone has done it. manifolds will fit eddy heads just wondering what plugs /wires where used any other problems
Posted By: Mr.Yuck
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 02:54 PM
Why? you loose the benefit of the heads w/ the log mani's???
Posted By: hemigod426
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 03:05 PM
well if a guy on here made 570 hp on a low deck,with eddys and manifolds how much can you be losing 40hp over headers it wont be much. i want to retain the stock look, not a race car, show car. im sure it will run better than tired, heavy 906s
Posted By: Mr.Yuck
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 03:14 PM
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well if a guy on here made 570 hp on a low deck,with eddys and manifolds how much can you be losing 40hp over headers it wont be much. i want to retain the stock look, not a race car, show car. im sure it will run better than tired, heavy 906s
I'm guessing that is a heavily modified enigine. And the Main's were "hogged" out some. I don't think they up-grade on a stockish 440-6 would be the same. You'd probably add more HP by getting a set of headers.
Posted By: hemigod426
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 03:43 PM
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well if a guy on here made 570 hp on a low deck,with eddys and manifolds how much can you be losing 40hp over headers it wont be much. i want to retain the stock look, not a race car, show car. im sure it will run better than tired, heavy 906s
I'm guessing that is a heavily modified enigine. And the Main's were "hogged" out some. I don't think they up-grade on a stockish 440-6 would be the same. You'd probably add more HP by getting a set of headers.
i bet its a tame street stoker 451-477 inch 10-5to1 comp pump gas. would be curious of his cam specs? heavily modified wedge to me is north of 700hp with no juice and and over 500 inches, we dont put manifolds on those
Posted By: RapidRobert
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 03:48 PM
I remember Andy's 440 buildup w 68-70 HP ex manifolds & 3" exhaust that netted 550 hp w alum heads. Dont recall if it was a stroker or the brand of the alum heads.
Posted By: AndyF
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 03:54 PM
There are several articles in the tech archives on the subject. My low deck 470 worked great with HP manifolds and ported Edelbrock heads. You have to use the right cam though. I did a lot of cam testing and the MP .528 solid was better than any of the custom cams that were ground for that motor.
http://www.moparts.org/Tech/Archive/bigblock.html
Posted By: hemigod426
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 04:11 PM
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There are several articles in the tech archives on the subject. My low deck 470 worked great with HP manifolds and ported Edelbrock heads. You have to use the right cam though. I did a lot of cam testing and the MP .528 solid was better than any of the custom cams that were ground for that motor.
http://www.moparts.org/Tech/Archive/bigblock.html
what do you think the most dur@50 you can have with 500 inch 440 with manifolds. my cam design so far is duration @ 50 int 246/250 ext solid flat tappet 555 intake lift 565 ext 112 lsa and icl 108, my motor plan 500 inch kit flat top pistons 10.59 comp with 88cc eddy heads. i want to put down over 500hp on rear wheel dyno 
Posted By: AndyF
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 05:14 PM
That seems in the ballpark. You'll just have to try it and then go from there. I had a bunch of 475 rwhp pulls with that low deck 470 motor on the chassis dyno but that was about the limit.
Better head porting and more intake rocker ratio would have been the next items for me to try. If you're shooting for 500 rwhp you'll probably need to thrash the combination a bit. I'd suggest 1.6 or 1.7 rocker arms on the intake and 1.5 on the exhaust as one area to test.
Have the heads been modified? The CNC porting from Modern is a pretty good package. I think you'll need some good port work to hit your 500 rwhp goal.
I'd be very surprised if the 6 pack intake would support 500 rwhp, it really isn't a very good intake. Guess you'll find out. If you do back to back testing with the 6 pack vs. a Performer RPM I think you'll find some gains.
Posted By: farmington
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 05:28 PM
Use the MP version of the eddy's or stealths, they both have straight plugs that will give you more room around the manifolds.
Posted By: JohnRR
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 05:35 PM
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well if a guy on here made 570 hp on a low deck,with eddys and manifolds how much can you be losing 40hp over headers it wont be much. i want to retain the stock look, not a race car, show car. im sure it will run better than tired, heavy 906s
I'm guessing that is a heavily modified enigine. And the Main's were "hogged" out some. I don't think they up-grade on a stockish 440-6 would be the same. You'd probably add more HP by getting a set of headers.
It was a 470" engine , nothing real exotic in the build, flat tappet cam, the manifolds were AS CAST ...
so you think a pair of headers is going to gain as much as changing from a set of heads that flow maybe 220 at .500 to a pair of heads that flow 280 plus at .500 ???
Posted By: hemigod426
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 05:41 PM
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Use the MP version of the eddy's or stealths, they both have straight plugs that will give you more room around the manifolds.
yes that would be easier but have eddys and 1.6 roller indy rockers. put a set of stealths on guys 512 thought the eddys where better but those angle plugs suck, had too ding in 2 tubes on my race car with hooker super comps
Posted By: topside
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 05:48 PM
Did something similar using Max Wedge exhaust manifolds on Eddys in my '63. Had to grind the bottoms of the manifolds a little to clear the head studs. The front of the right head is covered by the alternator, but the left head gives it away. For a more stock look, the 440Source heads would be better, but they weren't available when I did the car. It's nothing radical, but it makes plenty of power for the street.
Posted By: AndyF
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 05:56 PM
I sold my 470 motor and built a 512 with CNC ported Mopar '452' heads. The 512 is finshed and has been on the dyno a few times but it isn't back in the car yet. One reason I switched heads was to go with a straight plug. The angled plugs on the Edelbrock heads worked with the HP manifolds but I had to keep a very close eye on the #6 boot. I made a little heat shield for it and that usually worked but you have to check it all the time.
My new 512 has a hyd roller cam in an attempt to make some more power. Same manifolds and Performer RPM intake. I'll also switch to a Holley 950 UltraHP in a search for some power. I was using the Edelbrock 800 cfm AFB and AVS carbs before. The Eddy carbs are great for a street/strip motor but they are down about 10 hp when compared to a modern HP style Holley carb.
Posted By: Mr.Yuck
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 05:58 PM
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well if a guy on here made 570 hp on a low deck,with eddys and manifolds how much can you be losing 40hp over headers it wont be much. i want to retain the stock look, not a race car, show car. im sure it will run better than tired, heavy 906s
I'm guessing that is a heavily modified enigine. And the Main's were "hogged" out some. I don't think they up-grade on a stockish 440-6 would be the same. You'd probably add more HP by getting a set of headers.
It was a 470" engine , nothing real exotic in the build, flat tappet cam, the manifolds were AS CAST ...
so you think a pair of headers is going to gain as much as changing from a set of heads that flow maybe 220 at .500 to a pair of heads that flow 280 plus at .500 ???
I think there are easier and cheaper ways to get HP than bolting on a set of Eddy heads. Especially if you are going to choke them up w/ a set of exhaust Mani's. Why not run the stock 2.25 exhaust while you're at it?
Posted By: JohnRR
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 06:12 PM
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I think there are easier and cheaper ways to get HP than bolting on a set of Eddy heads. Especially if you are going to choke them up w/ a set of exhaust Mani's. Why not run the stock 2.25 exhaust while you're at it?
Yes there are , but the person wants to use the parts he has , just like you want to use 440's and put holleys on them with headers ...it's all about CHOICE .
Posted By: Mr.Yuck
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 06:19 PM
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I think there are easier and cheaper ways to get HP than bolting on a set of Eddy heads. Especially if you are going to choke them up w/ a set of exhaust Mani's. Why not run the stock 2.25 exhaust while you're at it?
Yes there are , but the person wants to use the parts he has , just like you want to use 440's and put holleys on them with headers ...it's all about CHOICE .
I thought he wanted to BUY the heads and install them? Does he have the heads sitting on the shelf? Totally different thing...and I put 3 holleys on my lastest ride.
Posted By: hemigod426
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 06:31 PM
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well if a guy on here made 570 hp on a low deck,with eddys and manifolds how much can you be losing 40hp over headers it wont be much. i want to retain the stock look, not a race car, show car. im sure it will run better than tired, heavy 906s
I'm guessing that is a heavily modified enigine. And the Main's were "hogged" out some. I don't think they up-grade on a stockish 440-6 would be the same. You'd probably add more HP by getting a set of headers.
It was a 470" engine , nothing real exotic in the build, flat tappet cam, the manifolds were AS CAST ...
so you think a pair of headers is going to gain as much as changing from a set of heads that flow maybe 220 at .500 to a pair of heads that flow 280 plus at .500 ???
I think there are easier and cheaper ways to get HP than bolting on a set of Eddy heads. Especially if you are going to choke them up w/ a set of exhaust Mani's. Why not run the stock 2.25 exhaust while you're at it?
ok lets go back to sqaure one the confines of the the build: 1970 v-code all oe 440+6 4spd 410 dana show car with only 2 mods on car. motor bay must look all stock from stock oil pan,stock 6bbl intake,stock manifolds,stock rad/fan anything between these parts is all fair game.. ie stroker kit,solid cam,alum heads ect..no headers,no aftermarket intakes. love to hear any combos on big blocks wedges with alum heads with manifolds
Posted By: Mr.Yuck
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 06:37 PM
"ok lets go back to sqaure one the confines of the the build: 1970 v-code all oe 440+6 4spd 410 dana show car with only 2 mods on car. motor bay must look all stock from stock oil pan,stock 6bbl intake,stock manifolds,stock rad/fan anything between these parts is all fair game.. ie stroker kit,solid cam,alum heads ect..no headers,no aftermarket intakes"
Then you can't use edy heads. They look nothing like the stock units. If you want the stock look the "stealth" heads are your only choice.
Posted By: AndyF
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 08:05 PM
The six pack intake is probably the best factory intake to use for that type of build. Should be a fun combo.
The 500 rwhp is going to be tough to hit though. An easier target to hit would be 500 ft-lbs of torque. My low deck 470 with the AVS carb, RPM intake, Eddy heads and HP manifolds would lay down 530 ft-lbs of torque at 4300 rpm.
Posted By: JohnRR
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 09:48 PM
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The six pack intake is probably the best factory intake to use for that type of build. Should be a fun combo.
The 500 rwhp is going to be tough to hit though. An easier target to hit would be 500 ft-lbs of torque. My low deck 470 with the AVS carb, RPM intake, Eddy heads and HP manifolds would lay down 530 ft-lbs of torque at 4300 rpm.
I wonder what HP ed cook is making , he is knocking on 10's with his 6pk , but I don't know what's been done to the intake , if anything , he is also using iron exh manifolds .
hemi , what class is allowing you to use alum heads ? is this a SHOW class , or racing ?
Posted By: BSB67
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 10:51 PM
Going by memory, I think Ed's running about 125 mph at about 3900 to 4000lb in good air. You can figure hp from there. Moroso calls it about 590 net flywheel. The fact is that running nearly 10s @ 125 on manifolds is impressive to say the least. The 125 mph makes it clear that the exhaust manifolds can support a lot of power. I don't know if Ed's intake manifold is ported, but others have gone over 120 with unported intakes for sure.
Posted By: R/T1968R/T
Re: eddy alum rpm heads with stock hp 440 manifolds - 03/26/09 11:00 PM