Picking Cam For Electric Fuel Injection ?

[427HISS]

But, like mentioned I'll just replace the cam and see how I like the output.

and springs, and retainers, and maybe even pistons if you don't have valve clearance....

It feels like a democracy, but the engine gets the final vote, and nobody knows whats in it yet

Of course....including new paint on the heads.

[falcongeorge]

Curious on which of these 5 would you guys choose ?

COMP Cams Comp Cams F23 294S-12
Oval Track Mechanical Flat Tappet Camshaft
Ford 2000-2300 OHC 4 CYL. 1971-1991
Lift: .503"/.503"
Duration: 300°/300°
Lobe Separation Angle: 112°
RPM Range: 3500-7400   
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$200.99
ESTIMATED SHIP DATE: 03/19/18
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COMP Cams 11-219-4
Part Number: 249-11-219-4
COMP Cams Comp Cams Magnum Mechanical Flat Tappet Camshafts
Magnum 294S Mechanical Flat Tappet Camshaft
Lift: .595''/.595"
Duration: 294°/294°
Lobe Separation Angle: 110°
RPM Range: 2500-6500

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$138.99
ESTIMATED SHIP DATE: 03/19/18
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COMP Cams 33-246-4
Part Number: 249-33-246-4
COMP Cams Comp Cams Magnum Mechanical Flat Tappet Camshafts
Magnum 294S Mechanical Flat Tappet Camshaft
Lift: .605"/.605"
Duration: 294°/294°
Lobe Separation Angle: 110°
RPM Range: 2500-6500   
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$154.99
ESTIMATED SHIP DATE: 03/28/18
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COMP Cams 12-224-4
Part Number: 249-12-224-4
COMP Cams Comp Cams Magnum Mechanical Flat Tappet Camshafts
Magnum 294S Mechanical Flat Tappet Camshaft
Lift: .525''/.525"
Duration: 294°/294°
Lobe Separation Angle: 110°
RPM Range: 2500-6500

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$147.99
ESTIMATED SHIP DATE: 03/12/18
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COMP Cams 20-248-4
Part Number: 249-20-248-4
COMP Cams Comp Cams Magnum Mechanical Flat Tappet Camshafts
Magnum 294S Mechanical Flat Tappet Camshaft
Lift: .525"/.525"
Duration: 294°/294°
Lobe Separation Angle: 110°
RPM Range: 3000-6500   
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$153.99
ESTIMATED SHIP DATE: 03/19/18
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whenever I see something like this (and I see it ALL the time), I think of Alan Freed, he was just in the wrong place at the wrong time, if he had been writing for the car mags in the 1990's. he woulda been fine. If you want a snotty idle, close the LSA up.

[427HISS]

I don't know you mean by, "whenever I see something like this (and I see it ALL the time)'' ?

LSA of like 108 ?

[falcongeorge]

I don't know you mean by, "whenever I see something like this (and I see it ALL the time)'' ?

LSA of like 108 ?

yup.

[DuckRyder]

I don't know you mean by, "whenever I see something like this (and I see it ALL the time)'' ?

LSA of like 108 ?

All those cams appear to be 294S for different engines IIRC Comp for an FE start with “33”.

Wasn’t Alan Freed a guy that was caught up in a big scandal about taking kickbacks for playing certain stuff on the radio?...

[My427stang]

I don't know you mean by, "whenever I see something like this (and I see it ALL the time)'' ?

LSA of like 108 ?

You likely won't be happy with a a cam with any duration and a 108 LSA with fuel injection.  Certainly can be done, but will take some tuning and tricks to behave nicely

[falcongeorge]

I don't know you mean by, "whenever I see something like this (and I see it ALL the time)'' ?

LSA of like 108 ?

You likely won't be happy with a a cam with any duration and a 108 LSA with fuel injection.  Certainly can be done, but will take some tuning and tricks to behave nicely

ANY cam that is going to "sound and feel nasty", per his request in the first post, is incompatible with his FI setup as it presently stands. But hey you are right, I broke my personal rule about posting ANYTHING on ANY camshaft thread on the internet, so Im getting what I deserve.

[Joe-JDC]

I guess I am coming to this post late, but I was one of the very first to convert a Ford to EFI back in 1987.  I actually worked with Crane to custom make some roller hydraulic camshafts for EFI use, and bought three of the first seven they ground.  After several years of building and modifying EFI engines, it became apparent that the lift, duration, was not a real factor as long as the lobe separation was wide for a decent idle and ability to get the rpm down to a streetable level and keep the engine from stalling with power brakes.  Pick whatever characteristics you want, but keep the LSA at 112* or above, and it should work well.  They will work with less, but with AC, Power Brakes, and/or PS, milder will be your friend in the long run.  JME, Joe-JDC

[My427stang]

I guess I am coming to this post late, but I was one of the very first to convert a Ford to EFI back in 1987.  I actually worked with Crane to custom make some roller hydraulic camshafts for EFI use, and bought three of the first seven they ground.  After several years of building and modifying EFI engines, it became apparent that the lift, duration, was not a real factor as long as the lobe separation was wide for a decent idle and ability to get the rpm down to a streetable level and keep the engine from stalling with power brakes.  Pick whatever characteristics you want, but keep the LSA at 112* or above, and it should work well.  They will work with less, but with AC, Power Brakes, and/or PS, milder will be your friend in the long run.  JME, Joe-JDC

Yep, it's all about overlap and keeping the cylinder fill clean.  Many modern engines go with numbers we never even think of, but it takes a good head.  Check this chart out

[falcongeorge]

delete. I promised myself I wasn't getting involved in these conversations anymore.

[427HISS]

I guess I am coming to this post late, but I was one of the very first to convert a Ford to EFI back in 1987.  I actually worked with Crane to custom make some roller hydraulic camshafts for EFI use, and bought three of the first seven they ground.  After several years of building and modifying EFI engines, it became apparent that the lift, duration, was not a real factor as long as the lobe separation was wide for a decent idle and ability to get the rpm down to a streetable level and keep the engine from stalling with power brakes.  Pick whatever characteristics you want, but keep the LSA at 112* or above, and it should work well.  They will work with less, but with AC, Power Brakes, and/or PS, milder will be your friend in the long run.  JME, Joe-JDC

Interesting.
I have a 427 Cobra, no power anything, like a Cobra should be. I of course don't want stalling  and other street problems, yet I need a radical chopping idle and even power band through the RPM's. Think of the engine as a bad-ass drag engine, but without very high compression on pump gas, or if you're into it, a 360cu dirt sprint car. As radical as I can get on the street. If I wanted to use aviation fuel again like with my Pro Street Camaro from many years ago, I'd do it, but I won't today.

So with your EFI knowledge, and now knowing what I want with my 428FE, what's your thoughts ?

[Joe-JDC]

Nearly every time I have helped folks with a camshaft that wanted radical, they wound up coming back and asking for something more street friendly.  Since that has been my experience, I still think you would have a strong engine with something in the 230-236* duration and whatever lift your springs can handle, with a 114* LSA.  Joe-JDC

[427HISS]

The duration is pretty low, is that because of the EFI  ?
I'll get new springs, push rods etc. with the cam selection.

[427HISS]

Ok, from you guys that know your EFI engines, with what I have and want/need, whats your opinion with the type of cam and specs ?

[My427stang]

"Think of the engine as a bad-ass drag engine, but without very high compression on pump gas, or if you're into it, a 360cu dirt sprint car."


Almost mutually exclusive from EFI without some very significant tuning ability, including a system that can go in and out of closed loop.  We are back where we started, I don't think anyone misunderstood your desires, they just don't lend themselves to a home tuned EFI system, or a dyno run or two, and certainly not a self-tuning system