Edelbrock Marine Heads
 

How do they compare to the AFT full cnc or the Dart Pro 1?

Re: Edelbrock Marine Heads
 

Is anybody using the Edelbrocks?? I was looking at them for my blown 502's. Does anybody have any flow numbers on these heads??

Re: Edelbrock Marine Heads
 

From what I saw on the flow bench several years ago, you're compareing a VW to a Cadillac. Find a good shop with real numbers then compare.

Re: Edelbrock Marine Heads
 

More like a SS camro to a Yenko. Both will run, just one is built to "really" run.

Chris

Re: Edelbrock Marine Heads
 

So if they are so bad, why are people spending $20K+ on 525efi's - don't they have the same heads? I hear of 525's making 540hp on the dyno and they only have 8.75:1 compression on 87 octane.

Seems like they are simply a GM 502ho short block$4500, $1500 heads, $3500 exhaust, $4500 for accesories. $10K overpriced?? One could build a HIGH quality 540 for $20K Crower, Dart, AFR, etc.

Re: Edelbrock Marine Heads
 

John,
Below is a package that will run around $5500 to install on a base 502 carb engine.
502cid - 100% stock short block other than min. deck cut to make flat
8.8 compression. Did not zero deck - pistons .012" down + .040" headgasket
850 Sea Demon 82P 90S
HVH 1" Super Sucker
HV/Brodix 2000 Intake
Canfield 310 heads / CNC Chamber / No Port Work
Cam - custom Hyd Roller Just under 225 at .050 I w/112LSA

2" Primary Schoenfield Headers - dyno mufflers
Will test Gill Exhaust again when done testing in this state

Belt driven Sea Water pump working - cross over - alternator working - no PS pump.

89 octane fuel - yep, Winter Blend right from the gas pump.

35 Degrees total timing - HEI external coil distributor ( yes, the computer one) with Jacobs amplifier/coil

RPM HP Torque
2100 194.3 483.8
2200 206.6 495.67
2300 217.5 498.52
2400 231.0 505.70
2500 243.9 512.60
2600 256.8 519.00
2700 269.2 523.36
2800 279.9 524.64
2900 288.2 521.78
3000 295.2 516.70
3100 302.8 513.17
3200 312.2 512.08
3300 323.2 514.40
3400 336.7 519.97
3500 351.9 527.69
3600 374.4 542.69
3700 387.9 550.14
3800 406.6 562.41
3900 424.7 572.21
4000 440.7 578.35
4100 457.4 584.13
4200 468.2 586.44
4300 480.3 586.50
4400 490.9 585.93
4500 500.4 583.75
4600 508.8 580.29
4700 515.1 576.90
4800 526.3 575.77
4900 531.4 569.77
5000 536.0 563.20
5100 540.2 556.26
5200 540.9 546.34

Re: Edelbrock Marine Heads
 

50-75hp increase on a hp500efi on a $1500 budget.

Re: Edelbrock Marine Heads
 

John,
Cam and bowl work on what you have will get you that increase.
Chris

Re: Edelbrock Marine Heads
 

Switching from the iron gm heads to edelbrock rect port should net you 70hp/80tq at 5000rpm. Great investment for $1,500. Plus you will have all new good valves and springs. I run these heads and think they are the best choice for shoestring budget guys like me that only want to make 500-550 hp. If this is you, go for it. I would leave the cam alone for now.

BT :cool:

Re: Edelbrock Marine Heads
 

Where can you purchase Edelbrock Marine heads for $1,500? The cheapist I have seen was Summit for $1,500 with valves only.

Re: Edelbrock Marine Heads
 

Flatlander Racing $1299 marine, good valves, no springs.

Re: Edelbrock Marine Heads
 

I switched from g.m. rectangle to eldebrock marines and performer r.p.m.s last year.....ported the heads,gained 1 point compression and reliabilty of inconel exhaust.....package is 150# lighter, runs alot better, but gained only about 3m.p.h. on a heavy 37' boat alot of work, but not much of a gain Ken

Re: Edelbrock Marine Heads
 

Ken - what kind of boat?

Re: Edelbrock Marine Heads
 

Will switching JUST the heads really get you an extra 70hp/80tq??

Re: Edelbrock Marine Heads
 

37' baja..........pics of finish job and flow numbers stock and after porting availableif wanted Ken [email protected]

Re: Edelbrock Marine Heads
 

I put in the flow numbers to desktip dyno for gm iron head and the flow numbers for 6055 rect port edelbrocks with my engine and that is what I get. I do run an excellent set of headers so that would have an impact if you run less perf exhaust. Depends on your exact combo, but they are a great improvement. Best part is they are repairable.


BT :cool:

Re: Edelbrock Marine Heads
 

I found out that the CP Performance deal is for heads and valves - not complete.

Re: Edelbrock Marine Heads
 

I was surprised at the power they made for me. 742 Hp with 2-3 lbs of non intercooled roots blower boost. Gasket matched only. 522 CID

Not my first choice for N/A engines by any means. Great bargain.

Flatlander advertises them for 1,299 but I have yet to find them in stock there.

Re: Edelbrock Marine Heads
 

yes i do email me and i will send a copy to you

Re: Edelbrock Marine Heads
 

amer3-

You are not setup to receive private messages on this board. I would appreciate any info you might have on the Edelbrock heads. Are you currently running them??

My email is [email protected]

Thanks

Dave

Re: Edelbrock Marine Heads
 

Still looking for flow numbers on these heads. Anybody?????

Re: Edelbrock Marine Heads
 

Bigwavz, I have the flow figures for the Edelbrock 454-R heads. I believe these are the same basic castings as the marine heads. Send me an e-mail or pm if you would like these figures.

Re: Edelbrock Marine Heads
 

I have the 7760 edelbrocks on a 540 that makes 570 Hp and 600 TQ with 8.5 compression. They have some port matching done and that's it.

Re: Edelbrock Marine Heads
 

For what it's worth I called Edelbrock and they stated that on a bone stock 502 MPI that the heads would give you an additional 40 HP at 5000 RPM. Not bad for a bolt on with the good valves. Everything else transfers from your stock cast iron heads such as rockers etc.

Re: Edelbrock Marine Heads
 

I think you'll see that the Iron Eagles from Competition Products with inconel upgrade for ~$1600 will flow substantially better and should generate better heat for power.
Just a thought...

Re: Edelbrock Marine Heads
 

Nordic heat--

You may be right about the flow, but the last thing I want is hotter cylinder temps. You must have not read my earlier posts. I am running blown 502's and I need to have cooler cyl temps. That is why I am going with aluminum, plus they can be easily repaired if damaged.

Re: Edelbrock Marine Heads
 

Sorry, missed that one :rolleyes:
That being the case be warned that the decks on the Edelbrocks are not the thickest and you could have heasd gasket issues. I know first hand :(

Re: Edelbrock Marine Heads
 

Bigwavz,
You'd be better off to get hold of RM builder and get a set of Canfields complete with all the parts ready to go. Thicker decks and killer flow numbers. You will need new head bolts.

Chris

Re: Edelbrock Marine Heads
 

Guys--

Unfortunately I have a limited budget :( I am doing both motors and for 1300.00 a pair I think they are a good deal. I thought the Edelbrocks have thick decks?? I am also going with head studs from ARP :D :D If some one knows of a better aluminum head for no more than 1500.00/pair including Inconel valves then I'm a buyer :D

Thanks

Re: Edelbrock Marine Heads
 

Howdy there, I just bolted on a pair of Edlebrock Oval port Marine heads on my Gen 6 and installed a 502/502 GM cam. I have Crane Gold Roller Rockers ready to go but am having a heck of a time measuring for new pushrods. Does anyone have this configuration and or any ideas on what length they would be. Thanks, TR

Re: Edelbrock Marine Heads
 

I built an Excel chart comparing about 8 heads vs the GM. I used most all Jim V numbers to keep things consistent. I will email it to anyone who wants it.

The Elderbrok did not come in well. I got there numbers off the web site.

The Iron Eagle were the best for the $. AFR rules

Re: Edelbrock Marine Heads
 

bigwavz,
If you think you are going to use all your stuff from your OEM heads on the E-brocks you are mistaken. OEM has 3/8" valve, Ebrock's have 11/32" so the retainers and locks won't work. Depending on if you have Gen 4, 5 ,or 6 heads will the rocker studs work and the springs.

Pay now or pay later.

Chris

Re: Edelbrock Marine Heads
 

Chris--

Where are the Canfields that you spoke of. Where do I look to spend my $$$$

Thanks

Re: Edelbrock Marine Heads
 

If you don't mind...

kennedy-jim@comcas<NOSPAM>t.net Of course remove <NOSPAM> ;)

Re: Edelbrock Marine Heads
 

Big,
drop me an e-mail and I will get you some numbers.

[email protected]

Re: Edelbrock Marine Heads
 

Chris, his Edelbrocks would come with everything but springs, retainers, cups and locks. They include valves, seals, studs and guide plates for $1400.
(You will need new rockers and push rods or change the studs out possibly)

On a budget, it's hard to beat Competition Products for Canfields. A complete set with inconel exh valves, and decent springs for around $1800-$1900 (non CNC chambers and no bowl work) . Talk with Butch 1-877-233-2023.

I switched to Canfields from the Eddy's and loved them. The only issue was the accesory holes on the front were (at least on mine) were 3/8 and not the general 7/16. A drill and a tap made quick work of that however :)

Dave
Linster: Please email me that if you wouldn't mind Thx
[email protected]

Re: Edelbrock Marine Heads
 

Hard Anodizing is $250 option. AFR/Canfield/Dart/world/brodix are all good choices.

Chris

Re: Edelbrock Marine Heads
 

I checked on the Canfields. Got a good price but was also told that the exhaust is raised about 1/2 inch. That might present a problem with my exhaust either hitting the valve cover or not lining up with the back of the boat. Another reason why I was looking at the Edelbrocks is that everything is the same as a stock head.

I again need to tell everyone that I am running blowers so intake efficiency is not as critical as a N/A motor. I just need good exhaust scavenging.

Re: Edelbrock Marine Heads
 

I Just got a set of the 308 Iron Eagle yesterday, They look very good as cast. I was also worried about the exhaust height and the salt water effect on aluminim. I see what it does to intakes.

I am just going to clean them up and flow them the first of next week. My engine shop guy said they looked better than anything he has seen short of CNC heads. Dart tells me you can flat mill these heads .080. That could take 16cc off a 119cc chamber. That can make a stock 502 have 9.5 compression. We verified that they can be milled that much. I will add some pictures later today

Re: Edelbrock Marine Heads
 

BigWavz, I think your going to find the raised exhaust ports common on most aftermarket heads. Could be part of the reason the Edelbrocks do not perform as well as the others. I may be able to handle +.5" raised exhaust port as the starboard side exhaust is about even with the thru-hulls and the port side is about .5" below the centerline of the thru-hull.