comp cams 260H
FE "Freakin Expensive"
Joined: Dec 2003
Posts: 6,461
Likes: 4
From: Smith Mountain Lake, VA
Art , What Wes is trying to say, As I took it from the guys Q, was the base performer and anyomne thats ever had one knows to even be fit right to the heads and block..Most need to be re-worked by a good machinist as they dont line up wirth a chit !! there all over the place... JMO
~Russ
~Russ
New User
Joined: Nov 2007
Posts: 19
Likes: 0
carb/intake
Your carb selection will be fine, like you said jetting it may help if your vacuum numbers don't jive. As far as the intake goes sell it on ebay. If money is the issue, then I would spend some money on a porting kit and port-match the intake runners to match your heads. If you match the intake gaskets they'll be too big. I run the performer RPM on mine, but I like the stock C80E 428CJ Iron manifold for the cold mornings and warmup time is reduced since it has the heat crossover.
check this one out.
eBay Motors: 428 FORD FE COBRA JET INTAKE (item 320327832976 end time Jan-01-09 07:34:51 PST)
check this one out.
eBay Motors: 428 FORD FE COBRA JET INTAKE (item 320327832976 end time Jan-01-09 07:34:51 PST)
Elder User
Joined: Mar 2004
Posts: 747
Likes: 0
From: Klamath Falls OR
I'll tell you what Ford Truck Old boy 460.........I'll do a free gasket match port job for ya! All you have to do is ship it out here and back. I'll spend the time to do it for ya! How does that sound??? You let me know and I will help you out any way I can.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
What is with this port match stuff? Hogging out at the ports to match at the head/intake junction does nothing to improve performance. In fact it can hurt performance. It is better to have the intake port slightly smaller than the head as it will reduce the revision pulse effect at the carb.
Elder User
Joined: Mar 2004
Posts: 747
Likes: 0
From: Klamath Falls OR
What is with this port match stuff? Hogging out at the ports to match at the head/intake junction does nothing to improve performance. In fact it can hurt performance. It is better to have the intake port slightly smaller than the head as it will reduce the revision pulse effect at the carb.
I always leave the port a little smaller then the head.
Thread Starter
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Mountain Pass
Joined: Mar 2008
Posts: 119
Likes: 1
Yup
Blacky76 - I would love to know more about a porting kit and port matching, etc. That ebay item you mentioned... after exchange, shipping and all would be well over what a new RPM peformer would be here. Something in the order of 500 Canadian bucks without the duty. So I aint going there. I may be able to find one at a wreckers around here tho. Thanks
Thread Starter
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Mountain Pass
Joined: Mar 2008
Posts: 119
Likes: 1
education
Krewat, Thank you for this statement.
"But I'd love to see what the difference is on a MILD 390, or better yet, the 360 that the original poster has.
Telling this guy his Performer is a piece of crap is NOT doing this guy any justice. Far from it."
I had posted... "I have no experience with it on a fe engine so I could use some education here."...
I appreciate that you realize, I am not that experienced and could use the help.
"But I'd love to see what the difference is on a MILD 390, or better yet, the 360 that the original poster has.
Telling this guy his Performer is a piece of crap is NOT doing this guy any justice. Far from it."
I had posted... "I have no experience with it on a fe engine so I could use some education here."...
I appreciate that you realize, I am not that experienced and could use the help.
Thread Starter
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Mountain Pass
Joined: Mar 2008
Posts: 119
Likes: 1
Your kind offer
Ford428CJ.
Thank you so much for your offer. I have two problems with it tho. The first is that the shipping would kill me from Here to There. The second is that I like to do stuff like this and learn from it. If I were to send it to you I do not get any satisfaction from it, in that I do not learn, nor do I have a sense of accomplishment.
I have done some searches etc and have found your posts to be most informative. I have a bit of trouble with searching as I seem to always end up with far to many topics. I do realize that you have way more knowledge than I and do like your input. I was out in the garage earlier and did a few measurements. Wow the Performer390 is way smaller than my stock intake ports on the heads. I also learn from you fellows interacting with each other. I had a question about port matching that you and Bear 45/70 answered with your messages. Thanks
Thank you so much for your offer. I have two problems with it tho. The first is that the shipping would kill me from Here to There. The second is that I like to do stuff like this and learn from it. If I were to send it to you I do not get any satisfaction from it, in that I do not learn, nor do I have a sense of accomplishment.
I have done some searches etc and have found your posts to be most informative. I have a bit of trouble with searching as I seem to always end up with far to many topics. I do realize that you have way more knowledge than I and do like your input. I was out in the garage earlier and did a few measurements. Wow the Performer390 is way smaller than my stock intake ports on the heads. I also learn from you fellows interacting with each other. I had a question about port matching that you and Bear 45/70 answered with your messages. Thanks
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Thread Starter
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Mountain Pass
Joined: Mar 2008
Posts: 119
Likes: 1
port sizes
Bear 45/70.
I dont know much about porting and your comments make a lot of sense. I was out in the garage doing some measurements and I found that the:
Intake gaskets are much larger than the intake ports, mostly in height. They were pretty much the same in width
Intake port on head is 1.87 in by 1.35 in "average" on the head of the truck
Intake port on the edelbrock varies between .925 and 1.05 in width and 1.65 and 1.88 in height.
Exhaust port on the engine is 1.4 x 1.75
If I were to port the edelbrock, what size would you recommend to stop at. I noticed that both you and Ford428CJ agreed that it should be smaller than the intake port on the head.
I do have a call in to the manager at the supplier to see if i can return the intake but that is iffy at best, so I may need to use this one regardless. Thanks
I dont know much about porting and your comments make a lot of sense. I was out in the garage doing some measurements and I found that the:
Intake gaskets are much larger than the intake ports, mostly in height. They were pretty much the same in width
Intake port on head is 1.87 in by 1.35 in "average" on the head of the truck
Intake port on the edelbrock varies between .925 and 1.05 in width and 1.65 and 1.88 in height.
Exhaust port on the engine is 1.4 x 1.75
If I were to port the edelbrock, what size would you recommend to stop at. I noticed that both you and Ford428CJ agreed that it should be smaller than the intake port on the head.
I do have a call in to the manager at the supplier to see if i can return the intake but that is iffy at best, so I may need to use this one regardless. Thanks
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
There is all kinds of theory about air flow thru ports. I dso know that the revision pulse generally moves back up the walls of the ports and the numbers I was always quoted was the intake at least 2/10th of an inch smaller than the head. But I also know that unless you are porting out the whole intake runner instead of just at the port it is not gonna help anything. Or at least port back far enough that the port was as big as you made the port at the head.
Thread Starter
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Mountain Pass
Joined: Mar 2008
Posts: 119
Likes: 1
2/10ths
Ok I guess the 2/10ths rule is what ford was following with the stock intake. It is about 2/10 smaller on the intake than it is on the head in width. The height in the intake and the height on the heads are close to identical. I can defineatly see why the stock intake could breath better. See I am learning finally. When I look up the runner it does not ever seem to widen as far as I would have to open the edelbrock. So it would seem to be restricted all along its path. The only thing I can even think of that this may help would be to increase the speed of the flow. But of course there is only so much flow it can pull in per stroke. I hope i can return this one and get a better one. Who knew....not me apparently
Elder User
Joined: Mar 2004
Posts: 747
Likes: 0
From: Klamath Falls OR
Krewat, Thank you for this statement.
"But I'd love to see what the difference is on a MILD 390, or better yet, the 360 that the original poster has.
Telling this guy his Performer is a piece of crap is NOT doing this guy any justice. Far from it."
I had posted... "I have no experience with it on a fe engine so I could use some education here."...
I appreciate that you realize, I am not that experienced and could use the help.
"But I'd love to see what the difference is on a MILD 390, or better yet, the 360 that the original poster has.
Telling this guy his Performer is a piece of crap is NOT doing this guy any justice. Far from it."
I had posted... "I have no experience with it on a fe engine so I could use some education here."...
I appreciate that you realize, I am not that experienced and could use the help.
By the way I never said "his Performer is a piece of crap". Wanted to make that "VERY" clear on here!!! I was stating that there are better intakes to be had. JMHO
Thread Starter
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Mountain Pass
Joined: Mar 2008
Posts: 119
Likes: 1
No you never said that in words, that I will agree to. However when someone who is new to FE's, and relatively inexperienced with motors, reads your replies they may take it that way. I did. I do appreciate your knowledge and input as you have proven to be very adept at this stuff. I did not intend to offend you in any way with that post and if I did I apologize.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 421
From: Long Island USA
It was a long time ago (15 years), but the Performer 390 I used on my 390 build was perfect out of the box. The heads were milled (both block and intake side the correct amounts) and I had no issues with it being straight or bolts holes lining up - the only problem was my using the stock bolts which were too long and caused a gasket leak. But again, that was a long time ago
As for port matching a regular Performer, why bother? Keeping the ports small keeps the intake charge moving fast, instead of slowing down just before it transits into the head. Unless you open up the entire runner all the way back to the plenum, that is
For a 260 cam, on a 360, is there really that much improvement available at the high-end port matching a Performer?
--
Philosophical comment:
Much like the Offroad forum here on FTE got to the point where everyone thinks you should run Rockwells on mall-crawlers, the "economy" builds here in the FE forum are getting a little out-there
Elder User
Joined: Mar 2004
Posts: 747
Likes: 0
From: Klamath Falls OR
I dont see the FE builds getting out there!!! If you want that, maybe you should go to fordfe.com Some of those are OUT THERE! But what do I know
I have built stuff on a budget..... An I do it all the time. I try to get the more bang for your buck. And stick your money where you are going to get the most out of it. JMHO