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67 440 magnum cam selection

Officer Higgins

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Hello, looking into replacing 20 year old hughes cam in my 440 with something maybe little more performance. Seems like every car show cars are so rumpty cant even tell if mine started some times. Factory intake and exhaust 3.23 915 heads 440 30 over. Power brake car. Talking with fellow from racer brown he said have to think about this power brakes is the biggest hurdle.
 
Welcome! Might hit the "Welcome Wagon" and don't forget some pics!

As far as a cam selection, it all depends on your pistons, how far down, rocker setup with spring ratings ect.

Here's my 1962 Dodge with a '67 440 with a Summit 6401 cam. I am useing just a little stiffer spring. Still useing hydraulic flat tappet lifters. The 6400 cam would probably work with all stock components.


Forgot to add that I have 14 inches of vacuum with this cam. That something you're going to need to consider with power brakes.
 
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Welcome! Might hit the "Welcome Wagon" and don't forget some pics!

As far as a cam selection, it all depends on your pistons, how far down, rocker setup with spring ratings ect.

Here's my 1962 Dodge with a '67 440 with a Summit 6401 cam. I am useing just a little stiffer spring. Still useing hydraulic flat tappet lifters. The 6400 cam would probably work with all stock components.


20180520_093529.jpeg
 
I just watched your YouTube video last night sounds good, cam maker was saying that the lobe separation angle is what gives overlap and rumpty idle, cam i have now has 112 degree lsa hughes whiplash is 108 lsa hard to make power brakes work with lower vacuum.
 
Welcome! Might hit the "Welcome Wagon" and don't forget some pics!

As far as a cam selection, it all depends on your pistons, how far down, rocker setup with spring ratings ect.

Here's my 1962 Dodge with a '67 440 with a Summit 6401 cam. I am useing just a little stiffer spring. Still useing hydraulic flat tappet lifters. The 6400 cam would probably work with all stock components.


Forgot to add that I have 14 inches of vacuum with this cam. That something you're going to need to consider with power brakes.

Yeah man very cool old mopes
 
Welcome!!! I have a Hughes whiplash and have 10" to 11" of vacuum At idle. I would not go with any less vacuum than that with power brakes.
 
welcome to FBBO

not really know your exact combo
but by what you said you have & a few assumptions
wild *** guesses on my part

performance 101;
the fact you have power brakes &
a restrictive factory intake not made for higher end performance &
restrictive exhaust manifolds & highway gears &
probably a stock torque converter, stock rocker arms, springs & retainers etc.
{none of which are really suited for too much camshaft probably stock carb, stock ignition,
stock style air cleaner, stock drivetrain, all of which are not suited for performance use
}

can make an issue in proper selection
on a real performance camshaft selections
bumpity bump, bucket tee, bucket tee, sounding cam
they tend to not make much vacuum at idle
or low cruising RPM, your exhaust will hinder it too...

you could do some other things,
it's pretty involved to help or to solve it...

a little on the subject;
without milling the tops of the valve guides
{not knowing what work you had done already}
about max of 0.500"-0.510" gross valve lift is safe,
also much more than that can have
"piston to valve clearance issues"
depending on camshaft timing
much more than that you can get interference issues

a little more info;
duration is where you get a lot of the
bucket tee, bucket tee, bucket tee, sound
with stock components like intake & exhaust manifolds
it will be a dog, not up-to it's potential,
but have a good thump sound :poke:
a 284*-292* degree (advertised duration & not at 0.050")
& with appr.
a gross valve-lift of 0.484"-0.509" gross valve lift
the gross valve lift
is camshaft lift x rocker arm ratio = Gross valve lift

camshaft will have a good, sounding aggressive
bucket tee, bucket tee, bucket tee, lope to it...

A better free flowing exhaust & headers will help sound
a shitload too...

talk to a camshaft expert 1st

too lengthy to get into here
this is just the welcome wagon forum
it's not intended for Q&A tech discussions,
it's more for intros & getting to know each other
sharing a couple photos of your car etc.

but that's a whole differ section of the forum
I'd suggest you post something in the general discussion forum
or a different related appropriate forum section here...

good luck with your decision...
 
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Hello, Thanks this is cam in it now hughes he1423bl 214/223 at 50 470/ 504 112 lsa cam in since 1998 car runs good not a dog. Just kicking around idea of cam swap figured alot of changes in cam designs since 98.
 
Welcome!!! I have a Hughes whiplash and have 10" to 11" of vacuum At idle. I would not go with any less vacuum than that with power brakes. Emailed hughes sounds like they really are pushing those cams, not good fit with power brakes im thinking.
 
I pulled the top off of my engine to put the on Edelbrock Performer RPM heads. I found that the flat top TRW pistons were for less compression. I found and used a build from their website for lower compression. I know My tuning and all arnt as good but it runs well and sounds good. My largest mistake was to use their heaver made HUG 5003 lifters and now have to listen to them.
 
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