Ford 351 W
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Joined: Feb 2004
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From: nortwest kansas
Bsddad 457, I already have an edlebrock 600cfm carb with a one inch aluminum swirl plate over an edlebrock performer manifold and msd6 ignition with headers and performance exhaustas i told conaski it seems real lacking at cruising when i pull hills it seems to fall off. So i am probably looking at either a cam kit or a cam and head change. I guess i am trying to get from you guys is if i do that will i see significant gains(i don't mean smokem off the line power or chirp them in third. I would just like to step on the peddle and feel something in response that i don' get now.
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Joined: Feb 2004
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From: nortwest kansas
By the way again all you guys have been really great, thanks conaski for getting this all started. It is nice to find a place you can go and get good field advice, unlike the reponse i got from summit and TCI when i asked there tech support. You were right on the money. So these e5 heads are pretty worthless, i don't want to invest in re-working them i would feel better about just investing in a set of new heads.
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Joined: May 2003
Posts: 11,141
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From: south louisiana
Do you know for certain the secondaries are opening on the carb? I'm not a fan of the Edlebrock carbs, but all I've read posted about them, they leave a lot on the table when compared to a similar sized Holley. A change in manifolds to an RPM would help too. The std Performer isn't much more than a copy of the stock factory 351W intake. As for the MSD, I don't know what you had before, but if you already had a Durspark setup, the MSD was a waste of dollars. You might also try advancing the timing and checking to see that it's advanced fully at about 3,000 rpms. Your initial timing should be about 12* BTDC. Work with the carb and timing before spending money on the heads. Even my 95 E150 van pulls like a freight train when you nail the gas and it's 351W is completely stock, ecepting the K&N filter element and the intake silencer removed. Factory HP rating for it is only 210 hp.
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Joined: Jun 2006
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From: Ottawa, Ontario
Originally Posted by peepinu
So these e5 heads are pretty worthless,
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Joined: Feb 2004
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From: nortwest kansas
lets talk cam then what type of lift and duration. I saw at summit, comp cams extreme truck cam. If i read you right i want a cam performing in that 1500-5000 rpm range as at cruise i am running about 2500-2600 rpms
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Joined: Mar 2004
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Originally Posted by baddad457
According to what Conanski posted , you've got E5AE heads. Chambers are big at 67-70 cc's. Swapping to a set of 64 cc heads will raise the comp ratio a half point, to 9.0 to 1, if you've got an 8.5 to 1 ratio. .
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From: Ottawa, Ontario
Originally Posted by P51D Mustang
I have a set of stock E6SE heads out in the shop, and IIRC, they also measure smaller chamber volumes than some of the books list.
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From: nortwest kansas
You guys sure k nowalot more about this than i do, i looked at a set of world jr heads they were 180cc with 58cc comb chamber. I have been looking on ebay about heads i see some pretty good deals. One other question that baddad457 brought up about total advance, how do i find out what the total advance should be for my pu and at what rpm.Let me throw this out to all of you, with the heads i have now if i put a cam in will it be cmpatible with everything. Looking at one of those comp extreme cams with 260/272 duration and about 484/493 lift. i want all of you to know that i am a real rookie at this but have always been interested in doing things like this. Never was a real gear head but you have sparked a real interest for me. Thanks again guys.
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Joined: Jul 2002
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From: Bend,OR
call compcams , there tech support is far better then summits. just explain what your running and where your going with your rig (plans). they can make a better call on what works for ya. also what plugs and wires you running. make sure plug wire 7 & 8 are not crossed and touching. this will cause a power loss for sure as well.
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Joined: May 2003
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From: south louisiana
Originally Posted by P51D Mustang
I'm not so sure about those chamber volume numbers. I only had to mill a set of E5AE heads .020 to get 57cc's. That's what they measure now, so I don't know what they measured originally, but if they were 67cc to start with, I don't think you could loose 10cc's with only a .020 mill? I have a set of stock E6SE heads out in the shop, and IIRC, they also measure smaller chamber volumes than some of the books list.
