Edelbrock RPM heads? - 460 Ford Forum
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post #1 of 42 (permalink) Old 05-06-2016, 07:58 PM Thread Starter
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Edelbrock RPM heads?

I have a 1970 429 DIVE block and D0VE heads. a Mild cam: Dur. @.050” lift = 218/228 advertised duration 276/286, gross valve lift .509” and Performer (Non RPM) intake with a Holley 770 Avenger carb.
The distributor is Duraspark II with MSD Blaster coil and 8mm wires. TRW flat top pistons. I believe that combo should be around 10.5:1 CR. the trans is a C6 with a 2400 stall converter. I have 3.25 gears. Car weighs 3400 lbs. (67 Mustang). I read that with a Edelbrock Performer RPM package, a stock 460 made 500hp.
So my question, I know the iron heads have restrictive exhaust ports, would the Edlebrock heads be worth the money?
I no longer drag race the car so the built 460 and 4.11 gears I used to run are long gone but I still want a fun street car. This combo is nice but I am just looking for a little more seat of the pants grunt.
Thanks

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post #2 of 42 (permalink) Old 05-06-2016, 08:09 PM Thread Starter
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I forgot to mention I have FPA "shorty" headers and an H pipe and a 2.5 inch exhaust.

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post #3 of 42 (permalink) Old 05-07-2016, 11:19 AM
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Quote:
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I have a 1970 429 DIVE block and D0VE heads. a Mild cam: Dur. @.050” lift = 218/228 advertised duration 276/286, gross valve lift .509” and Performer (Non RPM) intake with a Holley 770 Avenger carb.
The distributor is Duraspark II with MSD Blaster coil and 8mm wires. TRW flat top pistons. I believe that combo should be around 10.5:1 CR. the trans is a C6 with a 2400 stall converter. I have 3.25 gears. Car weighs 3400 lbs. (67 Mustang). I read that with a Edelbrock Performer RPM package, a stock 460 made 500hp.
So my question, I know the iron heads have restrictive exhaust ports, would the Edlebrock heads be worth the money?
I no longer drag race the car so the built 460 and 4.11 gears I used to run are long gone but I still want a fun street car. This combo is nice but I am just looking for a little more seat of the pants grunt.
Thanks
One thing they will do is allow that 10.7/1 compression engine to run readily on premium pump gasoline and have a little more power.
The improved exhaust ports won't make a lot of difference with a complete exhaust system behind them however, the better intakes will make quite a difference.

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post #4 of 42 (permalink) Old 05-07-2016, 01:39 PM
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Don't forget the weight loss off the front end with aluminum heads.
Edelbrock's were 62 lbs lighter than my Dove's
My 67 mustang ran .3 quicker et with Edelbrocks, but they were ported by Scotty at reincarnation. On the other hand my engine is low compression and 212 @.050 intake duration cam so that's quite an improvment.
The Dove's were stock but exhaust hump removed along with bowl casting flash by me.
I changed heads for the weight loss because I have manual steering but smiled when I saw the et improvement too.

67 mustang street car, 1977 460, 212 degree cam, 2500 converter, 3.50 gears, RHP Edelbrock heads
best ET 12.01, mph 112.98, 60ft 1.69

http://www.youtube.com/watch?v=7HztIgJymNw

http://s212.photobucket.com/albums/cc110/laveennick/
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post #5 of 42 (permalink) Old 05-07-2016, 03:21 PM Thread Starter
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both good points guys! Thanks. I do have to run 93 octane and still get some pinging occasionally. So you think the heads will help that?
And yes, i did consider the weight savings but didn't know if it would be noticeable.
I have no front bumper or bumper brackets, fiberglass hood, aluminum radiator, battery in the trunk, etc. and she doesn't feel that nose heavy. I have had it 26 years so I'm used to it but I have driven other small block Mustangs and it's not bad.
I recently added electric power steering assist after years of fighting the parking with no PS. Wow what a difference! No noise, no pump, in fact under the hood you still couldn't tell it has PS.

So another question, If I go with the heads and I already have the high CR, would a bigger cam hurt drivability or be worth it? Again, I don't know if I would notice a .3 on my timeslip but if it sits me back in the seat when I mash the go pedal, I am happy!

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post #6 of 42 (permalink) Old 05-08-2016, 06:15 PM
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Quote:
Originally Posted by TARA-fied View Post
both good points guys! Thanks. I do have to run 93 octane and still get some pinging occasionally. So you think the heads will help that?
And yes, i did consider the weight savings but didn't know if it would be noticeable.
I have no front bumper or bumper brackets, fiberglass hood, aluminum radiator, battery in the trunk, etc. and she doesn't feel that nose heavy. I have had it 26 years so I'm used to it but I have driven other small block Mustangs and it's not bad.
I recently added electric power steering assist after years of fighting the parking with no PS. Wow what a difference! No noise, no pump, in fact under the hood you still couldn't tell it has PS.

So another question, If I go with the heads and I already have the high CR, would a bigger cam hurt drivability or be worth it? Again, I don't know if I would notice a .3 on my timeslip but if it sits me back in the seat when I mash the go pedal, I am happy!
I'd like to hear what the experts say but I'd be tempted to put in a bigger cam with the compression you have. I would get a custom grind.

67 mustang street car, 1977 460, 212 degree cam, 2500 converter, 3.50 gears, RHP Edelbrock heads
best ET 12.01, mph 112.98, 60ft 1.69

http://www.youtube.com/watch?v=7HztIgJymNw

http://s212.photobucket.com/albums/cc110/laveennick/
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post #7 of 42 (permalink) Old 05-08-2016, 10:09 PM Thread Starter
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I'm thinking the same thing, just not sure what I need. I don't want to hurt the low end too much since it's a driver.

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post #8 of 42 (permalink) Old 05-12-2016, 01:08 AM Thread Starter
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I'm actually considering the Edelbrock cam they list for the top end kit...
Duration @ .050" 234 / 244
Lift .556" / .581"
LSA 108

Too Much?

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post #9 of 42 (permalink) Old 05-17-2016, 02:12 PM
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Quote:
Originally Posted by TARA-fied View Post
I'm actually considering the Edelbrock cam they list for the top end kit...
Duration @ .050" 234 / 244
Lift .556" / .581"
LSA 108

Too Much?
I wouldn't say that it is too much! Very similar to the Crane cam I'm going to run but, a touch more lift and duration on the exhaust side and little less lsa. Sounds like a good one!

Mike
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post #10 of 42 (permalink) Old 05-17-2016, 05:31 PM
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Edelbrock RPM heads?

Definitely give Randy or Carl a call and get a custom cam and even pay for a consultation. Trust me it's worth it and it's all the small details that matter.

I have a D3 headed 466 with the voodoo 219-227 custom grind from the Madporter and at 50km/hr roll I can punch it and lay a 30' strip, and She is a 4000lb truck. I run a 4R70W with 2500 stall and 3.50 gear and she jumps hard off the line. But it all goes back to the details and consulting the experts, definitely well worth it. IMHO.

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1964 F100 466 zero decked fuelie 7cc dish pistons, with RHP 2.11 1.65 budget D3 heads, Voodoo cam 219/227, rpm intake, Holley Terminator EFI, MSD Ignition, MSD FORD TFI Distrbutor, 4R70W Trans with Baumann Re-cal kit, US Shift electronic Trans controller with B&M Megashifter, 2500 Dirty Dog Convertor, 3.50 gears with detroit locker.

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post #11 of 42 (permalink) Old 05-17-2016, 09:46 PM Thread Starter
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thanks guys! I appreciate the input.

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post #12 of 42 (permalink) Old 03-08-2017, 09:13 PM Thread Starter
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I know it's an old thread but I thought I would update. I got the heads on and I am just waiting for the next test and tune day. My best time before the swap was 13.8 which is not real impressive. I had to shift at 5,000 rpm because my old springs were so bad it would float the valves around 5,500 and I didn't want to risk punching a hole in a piston. So it might not be a fair comparison but I can say the seat of the pants feels a LOT better! This weekend is a scheduled test and tune but weather man is calling for rain and possibly even flurries so maybe I will have to wait another month.
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post #13 of 42 (permalink) Old 03-08-2017, 09:24 PM
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With traction you should considerably faster.
Keep us posted!
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67 mustang street car, 1977 460, 212 degree cam, 2500 converter, 3.50 gears, RHP Edelbrock heads
best ET 12.01, mph 112.98, 60ft 1.69

http://www.youtube.com/watch?v=7HztIgJymNw

http://s212.photobucket.com/albums/cc110/laveennick/
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post #14 of 42 (permalink) Old 03-08-2017, 09:33 PM Thread Starter
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Quote:
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With traction you should considerably faster.
Keep us posted!
Thanks, I hope so! I will let you know as soon as I get a chance to make a pass or two.

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post #15 of 42 (permalink) Old 03-08-2017, 09:43 PM Thread Starter
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traction will be a problem...

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