Bought a stroker kit
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From: Madison, SD
Well, he didn't say if he was going racing or just wanted the eye candy of dual fours on the street.
If you're going racing, the 660 Holleys designed to be run as dual fours work super all the way to 8,000 rpm. If the dual fours are just for eye candy on the usual 5500 RPM street engine, the 390's will work fine. Intended usage has a lot to do with the CFM required. I've ran 390 CFM carbs on a 406 with a 4 speed on the street, they work great----key phrase being ON THE STREET. If it's intended usage had been drag racing I would have gone much bigger on the carbs. The two most common mistakes I've seen on street engines is too much carb and too much cam. Often times for normal street driving, less is more.... Just saying to be realistic on what your inteded RPM is, and what the truck is being built for....
If you're going racing, the 660 Holleys designed to be run as dual fours work super all the way to 8,000 rpm. If the dual fours are just for eye candy on the usual 5500 RPM street engine, the 390's will work fine. Intended usage has a lot to do with the CFM required. I've ran 390 CFM carbs on a 406 with a 4 speed on the street, they work great----key phrase being ON THE STREET. If it's intended usage had been drag racing I would have gone much bigger on the carbs. The two most common mistakes I've seen on street engines is too much carb and too much cam. Often times for normal street driving, less is more.... Just saying to be realistic on what your inteded RPM is, and what the truck is being built for....
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Joined: Mar 2004
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From: Klamath Falls OR
Originally Posted by Dave Severson
Well, he didn't say if he was going racing or just wanted the eye candy of dual fours on the street.
If you're going racing, the 660 Holleys designed to be run as dual fours work super all the way to 8,000 rpm. If the dual fours are just for eye candy on the usual 5500 RPM street engine, the 390's will work fine. Intended usage has a lot to do with the CFM required. I've ran 390 CFM carbs on a 406 with a 4 speed on the street, they work great----key phrase being ON THE STREET. If it's intended usage had been drag racing I would have gone much bigger on the carbs. The two most common mistakes I've seen on street engines is too much carb and too much cam. Often times for normal street driving, less is more.... Just saying to be realistic on what your inteded RPM is, and what the truck is being built for....
If you're going racing, the 660 Holleys designed to be run as dual fours work super all the way to 8,000 rpm. If the dual fours are just for eye candy on the usual 5500 RPM street engine, the 390's will work fine. Intended usage has a lot to do with the CFM required. I've ran 390 CFM carbs on a 406 with a 4 speed on the street, they work great----key phrase being ON THE STREET. If it's intended usage had been drag racing I would have gone much bigger on the carbs. The two most common mistakes I've seen on street engines is too much carb and too much cam. Often times for normal street driving, less is more.... Just saying to be realistic on what your inteded RPM is, and what the truck is being built for....
I can understand why no one post on this forum too much. There is a lot more experance people over there and big name people like Barry (and others) that have been doing this a loooooong time. I think you need to reread Barrys post! nuf said........
Last edited by FTE Ken; Feb 28, 2008 at 08:09 AM.
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From: Madison, SD
Wow!!!! You must be a genius and a mind reader!!!! Just because it's a stroker, of course he's going racing....... Guess I'm the only one who's ever seen big inch strokers with too much cam and too much carb putting around on the street!!!!!
And if ya wanna get personal, go ahead. Doubt I'll be wasting my time. Just thought that maybe you MIGHT want to consider other options. Not exactly my first time around the block either. I know Barry and others know a lot more about FE's then I do......but I do know what works ON THE STREET and what works ON THE TRACK...... but then again I must be stupid.... I learned what I know by building cars and engines for the last 40 years....not by reading about it on some forum....Silly me.....
And if ya wanna get personal, go ahead. Doubt I'll be wasting my time. Just thought that maybe you MIGHT want to consider other options. Not exactly my first time around the block either. I know Barry and others know a lot more about FE's then I do......but I do know what works ON THE STREET and what works ON THE TRACK...... but then again I must be stupid.... I learned what I know by building cars and engines for the last 40 years....not by reading about it on some forum....Silly me.....
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Joined: Feb 2006
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Aside from the personality battle - - I think you guys missed a key point. Vac secondary carbs on a staged linkage setup - like most FEs - are really just a fancy single double pumper - and should be sized appropriatly. Ignore the secondaries on the carbs. If they ever come in that's great - you can control that with the springs if need be.
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From: Madison, SD
So Barry, you're saying to run the primary sides of the carbs on a progressive setup so the majority of the low speed around town stuff is on just one carb??? Got to say I've never done mine that way, but a progressive setup on the primaries with suitably sized carbs would make for smooth transitioning between the carb's stages and adjusting when the secondaries come on.... Would you then run different sized secondary springs on vacuum advance carbs?
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Yup - thats exactly how Ford set up the original 427 cars - it starts out on the primary (front carb), then brings in the secondary carb at a faster rate with both carbs hitting wide open at the same time. The secondaries are vac opened by airflow through the primary barrels on Holleys - thus you can use the same spring on both carbs and tie the cannisters together with a hose - again just like Ford did it in 1960 something....
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From: Madison, SD
Thanks Barry, never have had a set of the factory dual fours but it sure sounds like a good setup.... Like I said, my dual four's were on a 406 with straight up linkage on the primaries and had the secondaries staggered to come in at a more gentle rate. Worked good, but the factory method sounds even better.
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From: Madison, SD
Thanks Barry, never have had a set of the factory dual fours but it sure sounds like a good setup.... Like I said, my dual four's were on a 406 with straight up linkage on the primaries and had the secondaries staggered to come in at a more gentle rate. Worked good, but the factory method sounds even better.
Thinking about doing an EFI setup on my 428, should I ever have time to get at it!!!!! Any good suggestions for a very streetable EFI for it????
Thinking about doing an EFI setup on my 428, should I ever have time to get at it!!!!! Any good suggestions for a very streetable EFI for it????
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From: Klamath Falls OR
Originally Posted by Dave Severson
Thanks Barry, never have had a set of the factory dual fours but it sure sounds like a good setup.... Like I said, my dual four's were on a 406 with straight up linkage on the primaries and had the secondaries staggered to come in at a more gentle rate. Worked good, but the factory method sounds even better.
Thinking about doing an EFI setup on my 428, should I ever have time to get at it!!!!! Any good suggestions for a very streetable EFI for it????
Thinking about doing an EFI setup on my 428, should I ever have time to get at it!!!!! Any good suggestions for a very streetable EFI for it????
http://www.diyautotune.com/
http://www.megasquirt.info/
Heres the Forums if you would like to learn more about it
http://www.msefi.com/
Or if you have the BIG bucks, FAST EFI can hook you up! Bolt on and go so to speak!
http://www.fuelairspark.com/
Elder User
Joined: Mar 2004
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From: Klamath Falls OR
Here are some other EFI stuff for ya!
http://www.force-efi.com/index.htm
And some real good info on Mega
http://www.302w.com/Windsor_MegaSqui...roduction.aspx
http://www.force-efi.com/index.htm
And some real good info on Mega
http://www.302w.com/Windsor_MegaSqui...roduction.aspx
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From: Klamath Falls OR
Originally Posted by Dave Severson
Thanks for the links!!! Went through them last night, lots of great information and some good parts sources, too!!! Appreciate the help.
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From: Klamath Falls OR
Originally Posted by stryder
Search for posts by Rusty70f100. He put together an EFI 390 that runs on E85. He hasn't posted in months, so if you have questions you may be SOL.