Posted By: dare_dude
440 Source CNC heads - 11/21/08 07:42 PM
Anybody using them? They look pretty sharp! 
440 Source CNC heads
Posted By: challenger1320
Re: 440 Source CNC heads - 11/21/08 08:20 PM
I had one for week to do a show with and they look awesome. Jeff at Modern Cylinder Head does the CNC work.
Posted By: Triple Threat
Re: 440 Source CNC heads - 11/21/08 10:21 PM
Got a link to the CNC'd heads? Couldn't locate them on their site.
Posted By: mopowers
Re: 440 Source CNC heads - 11/21/08 11:21 PM
Posted By: Ted P
Re: 440 Source CNC heads - 11/22/08 12:36 PM
Does anyone know if the CNC is with the stock intake port size or has it been enlarged to the max wedge port. I want to run them with a six pack intake manifold.
Posted By: moderncylinder
Re: 440 Source CNC heads - 11/22/08 02:26 PM
stock size
Posted By: AndyF
Re: 440 Source CNC heads - 11/22/08 04:33 PM
Here is a picture of the CNC Stealth head next to a stock head. The CNC port work looks very nice in the Stealth heads.
Posted By: 440Jim
Re: 440 Source CNC heads - 11/22/08 05:09 PM
Is that why they are called "Stealth"?
paint them to match the engine and they will look like stock heads... freeze plug, etc.
paint them to match the engine and they will look like stock heads... freeze plug, etc.
Posted By: GTSDave
Re: 440 Source CNC heads - 11/22/08 05:32 PM
Anyone have any good pictures of the CNC heads chambers? I want to run a set on a 383 and I am concerned about the compression.
-Dave
-Dave
Posted By: 71cudaddict
Re: 440 Source CNC heads - 11/22/08 05:38 PM
have them on my cuda convo. 528 6pk 5sp.only problem is push rod clearnce on the intake side. crane 1.5 roller rockers, feels like a low 11-high 10 car. great product for the price. they were cnc ported by Jeff at modern. fun car to 
Posted By: AndyF
Re: 440 Source CNC heads - 11/22/08 06:52 PM
Here are the chambers. Typical closed chamber, looks a bit like a 915 head.
Posted By: B1Fish540
Re: 440 Source CNC heads - 11/22/08 07:51 PM
For a head that is a dead ringer for a stock head 320 CFM is very respectable if not unheard of! Kudus to Jeff for working his majic once again and congrats to Brandon in his decision to use MCH. 
Posted By: ProSport
Re: 440 Source CNC heads - 11/22/08 08:14 PM
That's an awesome price for a CNC ported head that flows that good. I would jump all over that if starting from scratch. They're probably very similar to my old Eddy heads that ran 9's on a streetable combo, great deal.
Posted By: jyrki
Re: 440 Source CNC heads - 11/24/08 07:53 AM
Quote:
They're probably very similar to my old Eddy heads that ran 9's on a streetable combo, great deal.
They should be. As far as I've understood, the CNC program is just the same as used in RPM heads.
Posted By: moparniac
Re: 440 Source CNC heads - 11/24/08 10:11 AM
The set my buddy got needed corrected all over the place... 
Im not gonna say the comments he got from you know who so he dont get bent out of shape about it.... but I would buy a worked used set of eddy's off here from an experienced member before going that route... 
Im not gonna say the comments he got from you know who so he dont get bent out of shape about it.... but I would buy a worked used set of eddy's off here from an experienced member before going that route...
Posted By: jamesc
Re: 440 Source CNC heads - 11/24/08 11:02 AM
Quote:
The set my buddy got needed corrected all over the place... Im not gonna say the comments he got from you know who so he dont get bent out of shape about it.... but I would buy a worked used set of eddy's off here from an experienced member before going that route...
would you care to elaborate on that? if Jeff is doing the finish work i'm having trouble understanding what needs to be corrected.
Posted By: moparts
Re: 440 Source CNC heads - 11/24/08 01:50 PM
Quote:
The set my buddy got needed corrected all over the place...
At this point I would not bother to listen to any thing wedgeOmatic has to say when it comes to 440source, He has posted in the all 440source threads about his valve cover problem many times over and over
Posted By: tpabayflyer
Re: 440 Source CNC heads - 11/24/08 03:17 PM
How about some pix of your car??? Sounds like a real nice combo you have... I am planning on using the stealth ported heads on my 500 sixpack and want to look stock but carry a big stick! TBF
Posted By: Twostick
Re: 440 Source CNC heads - 11/24/08 04:32 PM
Maybe we could trade him for Eddie? At least his ranting and raving had some entertainment value.
Back on topic.
Kevin
Back on topic.
Kevin
Posted By: MoparDonny
Re: 440 Source CNC heads - 11/25/08 02:27 AM
Quote:Quote:
The set my buddy got needed corrected all over the place...
At this point I would not bother to listen to any thing wedgeOmatic has to say when it comes to 440source, He has posted in the all 440source threads about his valve cover problem many times over and over
Well said!!! Getting very old seeing his continuous whining of 440 source parts. Give it up already, Wedgy!!!
Posted By: rustbucket
Re: 440 Source CNC heads - 11/25/08 02:32 AM
There is one problem with the heads though. I went to order a set about a month ago and the only way they will sell them is complete with springs for a small cam. I want to run a hydraulic roller so the springs, stc would be useless! Why won't they sell them bare.... or has this changed 
Posted By: moderncylinder
Re: 440 Source CNC heads - 11/25/08 02:42 AM
you can buy just an inner spring from comp cams #974-16 making a double with enough tension for a flat tappet or hyd roller
Posted By: MoparDonny
Re: 440 Source CNC heads - 11/25/08 02:49 AM
Quote:
There is one problem with the heads though. I went to order a set about a month ago and the only way they will sell them is complete with springs for a small cam. I want to run a hydraulic roller so the springs, stc would be useless! Why won't they sell them bare.... or has this changed
I would think it's because MCH has adjusted the Valvetrain and checked all the clearances in the whole assembly and it's just part of the deal. I would think they could have bare CNC'd ones in the future. What exactly is a smallish cam. I think even the EDDY RPM's can handle up to 600 lift on stock springs, even though they likely won't handle it as I've heard before.
Don.
Posted By: gregsdart
Re: 440 Source CNC heads - 11/25/08 02:51 AM
If i were out to build a 700 hp budget motor, this is where i would start. The heads flow enough to make the power, and the price is right. Put them on a 535 inch rb 4.5 stroke shortblock, shift at 5800 rpm!
Posted By: Hyper Henry
Re: 440 Source CNC heads - 11/25/08 02:53 AM
They sound like a very good deal 
What about weight?? Same as Eddy, more than Eddy or less than the Eddy head??
Derrick
What about weight?? Same as Eddy, more than Eddy or less than the Eddy head??Derrick
Posted By: dstryr
Re: 440 Source CNC heads - 11/25/08 03:12 AM
Quote:
you can buy just an inner spring from comp cams #974-16 making a double with enough tension for a flat tappet or hyd roller
Would you recommend doing that for a comp XS290S or will the stock Stealth springs handle that cam?
Posted By: moderncylinder
Re: 440 Source CNC heads - 11/26/08 02:04 AM
if its a car quicker than 12.0,, id add the inner
Posted By: thecarfarmer
Re: 440 Source CNC heads - 11/26/08 02:16 AM
Quote:No mention of getting 'em w/o springs & etc. on their web page; they don't list any heads (ported or not) bare or bare w/ valves.
There is one problem with the heads though. I went to order a set about a month ago and the only way they will sell them is complete with springs for a small cam. I want to run a hydraulic roller so the springs, stc would be useless! Why won't they sell them bare.... or has this changed
Kinda' sux, 'cause I have a solid roller, and have already purchased springs/retainers.
-bill
Posted By: Runner
Re: 440 Source CNC heads - 11/26/08 02:19 AM
Quote:
if its a car quicker than 12.0,, id add the inner
thats interesting, why does et make a differance?
Posted By: moderncylinder
Re: 440 Source CNC heads - 11/26/08 02:22 AM
the quicker the car,,, the quicker the engine will accelerate,, therefore compounding valve acceleration..
Posted By: jyrki
Re: 440 Source CNC heads - 11/26/08 07:35 AM
this really doesn't make any sence, the ET really hasnät got much to do with the engines accelration rate. How aboout the number of gears, engine rpm range, total gear ratio etc?
Posted By: moderncylinder
Re: 440 Source CNC heads - 11/26/08 12:47 PM
its a generalization,, more power the engine makes the quicker it will acclerate the car theefore acclerating the engine/valvetrain quicker,,, common sense..
you could have some 572 with a small hyd cam that has a 2.73 gear that can go 11's , or something to that nature,, that makes my reasoning fail,, but again its a generalization.
like a 590 cam in a 4000lb car with a 440 that is pump gas and runs 12.50's,, then take a 590 cam in a 528 or 540 that has high compression in a 2500lb drag car,, the spring requirements are not the same,, again common sense..
i have "general" rules
for setting heads up based on cam, rocker ratios, rear end ratio, total lift, how many gears, how quick the car is overall,, most people put in the rear end ratio to max engine speed at the expected targeted 1320ft mark.
you could have some 572 with a small hyd cam that has a 2.73 gear that can go 11's , or something to that nature,, that makes my reasoning fail,, but again its a generalization.
like a 590 cam in a 4000lb car with a 440 that is pump gas and runs 12.50's,, then take a 590 cam in a 528 or 540 that has high compression in a 2500lb drag car,, the spring requirements are not the same,, again common sense..
i have "general" rules
for setting heads up based on cam, rocker ratios, rear end ratio, total lift, how many gears, how quick the car is overall,, most people put in the rear end ratio to max engine speed at the expected targeted 1320ft mark.
Posted By: AAR-B4
Re: 440 Source CNC heads - 11/26/08 01:28 PM
Thanks MCH for the inner spring tip.
Will the Source retainers work? or is there a better choice?
Will the Source retainers work? or is there a better choice?
Posted By: rustbucket
Re: 440 Source CNC heads - 11/26/08 04:41 PM
Quote:Quote:No mention of getting 'em w/o springs & etc. on their web page; they don't list any heads (ported or not) bare or bare w/ valves.
There is one problem with the heads though. I went to order a set about a month ago and the only way they will sell them is complete with springs for a small cam. I want to run a hydraulic roller so the springs, stc would be useless! Why won't they sell them bare.... or has this changed
Kinda' sux, 'cause I have a solid roller, and have already purchased springs/retainers.
-bill
This is my point exactly. If you have parts already why would youbuy them again. Does anyone else make you buy their heads complete!!!!!
Posted By: DaytonaTurbo
Re: 440 Source CNC heads - 11/26/08 04:53 PM
Quote:
This is my point exactly. If you have parts already why would youbuy them again. Does anyone else make you buy their heads complete!!!!!
If memory serves, brandon's reasoning for this was so many people wanted to buy the heads bare but with valves. He decided that he would just sell the whole thing because you'd still be ahead of the game even if you had to replace the springs/retainers. Probably just easier for him to sell them whole.
Posted By: moderncylinder
Re: 440 Source CNC heads - 11/26/08 05:01 PM
maybe he could sell them without the springs and so on,,, maybe he would drop the price 30 dollars or something,, see them for 869.00,,, or even maybe 859.00..
edelbrock does not sell their performer head as a head w valves only,, if you bought the casting and then bought valves you would have the same amount of money as if you bought the assembled head from them.
what i would be asking for is a "race" version with a double spring and 10 degree locks and retainers,,, maybe he could offer that kind of an upgrade for 50-75 bucks more.
jeff
edelbrock does not sell their performer head as a head w valves only,, if you bought the casting and then bought valves you would have the same amount of money as if you bought the assembled head from them.
what i would be asking for is a "race" version with a double spring and 10 degree locks and retainers,,, maybe he could offer that kind of an upgrade for 50-75 bucks more.
jeff
Posted By: Dave64
Re: 440 Source CNC heads - 11/26/08 05:35 PM
Ding, ding, ding...we have a winner!
Posted By: domingo
Re: 440 Source CNC heads - 11/26/08 06:10 PM
Id buy a set with the spring upgrade for sure.
Posted By: RobX4406
Re: 440 Source CNC heads - 11/26/08 06:45 PM
I bet that 440source doesn't sell them sans springs because it requires a separate SKU/stocking number. The difference of $30 doesn't make economic sense due to potential lost sales from the complete units.
Easier to stock one unit for the marginal difference.
Heck, if I bought them and didn't want the springs/retainers, I'd give them to someone doing a milder build. If $30 is a budget buster?
Easier to stock one unit for the marginal difference.
Heck, if I bought them and didn't want the springs/retainers, I'd give them to someone doing a milder build. If $30 is a budget buster?
Posted By: Von
Re: 440 Source CNC heads - 11/26/08 06:57 PM
Quote:
If $30 is a budget buster?
Posted By: RobX4406
Re: 440 Source CNC heads - 11/26/08 07:14 PM
Quote:Quote:
If $30 is a budget buster?
What's that got to do with this anyways? Got any issue... PM me.
Posted By: 69sixpackbee
Re: 440 Source CNC heads - 11/27/08 02:36 AM
Posted By: dare_dude
Re: 440 Source CNC heads - 05/15/09 10:42 PM
Anybody got any track performance on these? Dyno # etc.?
Posted By: Von
Re: 440 Source CNC heads - 05/16/09 05:17 AM
Quote:
What's that got to do with this anyways? Got any issue... PM me.
Sorry for the hijack...
Carry on.
Posted By: therocks
Re: 440 Source CNC heads - 05/16/09 12:42 PM
I changed my springs retainers amd keepers.My machinist said they would be OK for a smaller hyd cam but I run a .588 solid.I sold the parts to a guy for 40 bucks and we were both happy.Rocky
Posted By: RobX4406
Re: 440 Source CNC heads - 05/16/09 06:33 PM
Quote:Quote:
What's that got to do with this anyways? Got any issue... PM me.
Sorry for the hijack...
Carry on.
Have a great day and "Carry on!"
Posted By: tjmarcus1
Re: 440 Source CNC heads - 05/16/09 06:51 PM
we don't have any terrorists on here do we, 'cause i think i just saw a hi-jack 
Posted By: Diego_Ted
Re: 440 Source CNC heads - 05/16/09 08:23 PM
OK guys let's stay on topic, and take the other stuff to pms.
Diego
Diego
Posted By: G_bob
Re: 440 Source CNC heads - 05/17/09 12:19 AM
Diego Ted a mod! 
I go away for ONE night and looks what happens.
Woo Hoo, I know a mod.
How's that for a hijack?
I go away for ONE night and looks what happens.
Woo Hoo, I know a mod.
How's that for a hijack?
Posted By: dthemi
Re: 440 Source CNC heads - 05/17/09 01:22 AM
For as little as these heads cost complete, you could just throw the springs away and still be ahead of the game. It's encouraging to see good bargain heads for a Mope, like Ford and Chevy have falling out of the sky.
Posted By: 1_WILD_RT
Re: 440 Source CNC heads - 05/17/09 01:41 AM
Quote:
For as little as these heads cost complete, you could just throw the springs away and still be ahead of the game. It's encouraging to see good bargain heads for a Mope, like Ford and Chevy have falling out of the sky.
why all the drama.. I replaced the springs on my Edelbrocks, don't recall having to whine about it...
Posted By: Joshs68
Re: 440 Source CNC heads - 05/17/09 02:00 AM
Quote:
For as little as these heads cost complete, you could just throw the springs away and still be ahead of the game. It's encouraging to see good bargain heads for a Mope, like Ford and Chevy have falling out of the sky.
exactly
I wish these were available when I built my car!
Posted By: tjmarcus1
Re: 440 Source CNC heads - 05/17/09 02:00 AM
Quote:well said!Quote:
For as little as these heads cost complete, you could just throw the springs away and still be ahead of the game. It's encouraging to see good bargain heads for a Mope, like Ford and Chevy have falling out of the sky.
Posted By: 71Pan
Re: 440 Source CNC heads - 05/17/09 04:01 AM
These heads are worth 1995 bare! . I have had more in 915's 20 years ago. Some opions on this board chap my hide!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Posted By: Cab_Burge
Re: 440 Source CNC heads - 05/17/09 05:28 AM
Quote:I have a set of the first non CNC batch, the springs on them had 140 lbs pressure on the seat and 340 lbs at 600 lift, coil bind at around .700, if I remeber correctly. so I would say they will work fine with that cam and even 1.6 rockersQuote:
you can buy just an inner spring from comp cams #974-16 making a double with enough tension for a flat tappet or hyd roller
Would you recommend doing that for a comp XS290S or will the stock Stealth springs handle that cam?
I would probally shim the springs up so they had about .080 from coil bind on all sixteen springs and replace the retainers and valve locks with some super sevens or ten degree lock and retainers that would fit that spring properly 
I haven't use them on a motor yet but I will shortly, maybe after having them done by Jeff if I can get a deal before this winter 
Posted By: dare_dude
Re: 440 Source CNC heads - 05/18/09 11:42 AM
Anybody with Track Numbers from there car?
Posted By: JAKE68
Re: 440 Source CNC heads - 05/18/09 02:15 PM
We just put on a set this past week on a car that has .590 cam with 915 heads with a crossram. The car only made 2 passes with this combo and went 11.00 @120mph. Put the cnc heads by jeff on and went 10.47@127 at cc. in colombus this past wkend. Jake
Posted By: deaks
Re: 440 Source CNC heads - 05/18/09 02:33 PM
Jake
What was the car spec.
Mick
What was the car spec.
Mick
Posted By: BDS871Cuda
Re: 440 Source CNC heads - 05/18/09 03:51 PM
Quote:Quote:
exactly
I wish these were available when I built my car!
I here ya Josh!
I had Jason Line do up a set of 452's back in the
90's because that's all there was for guy's like
us. No Eddie RPM's, no CNC Stealth's and no stroker
kits . Just hard working 440's!
Posted By: junkyardmaxie
Re: 440 Source CNC heads - 05/18/09 03:51 PM
hi, want to buy a set of these 440 source heads,but was at the cc at columbus, and heard two guys talking about these heads. they said they have heard of 3 different sets that one of the heads was cracked and leaked water. he replaced the head ,but i dont want to put them on and have to take them back off.my funds are limited.has JEFF the porter ran into any problems ? any feed back on this? around the KILCARE area ohio thanks
Posted By: Harley
Re: 440 Source CNC heads - 05/18/09 05:34 PM
Quote:
We just put on a set this past week on a car that has .590 cam with 915 heads with a crossram. The car only made 2 passes with this combo and went 11.00 @120mph. Put the cnc heads by jeff on and went [Email]10.47@127[/Email] at cc. in colombus this past wkend. Jake
Nice gain.
Did the 915's have any port work done to them?
Posted By: JAKE68
Re: 440 Source CNC heads - 05/18/09 06:59 PM
Yes they had a nice port job on them and they had 2.14/1.81 valves. They also had a maxwedge intake port.
Posted By: 70VcodeCoronetRT
Re: 440 Source CNC heads - 09/26/09 09:06 PM
What kind of valves do the cnc version come with? Decent enough for a street strip setup? THANKS
Posted By: sshemi
Re: 440 Source CNC heads - 09/27/09 08:44 AM
I would say that port volume is a little small for a stroker.
Posted By: gregsdart
Re: 440 Source CNC heads - 09/27/09 01:53 PM
Are the intake valve seats big enough to go 2.19 valves, and is there enough meat in the throats to match?
What is the cost for a cnc ported set from mch?
What is the cost for a cnc ported set from mch?
Posted By: junkyardmaxie
Re: 440 Source CNC heads - 09/27/09 02:22 PM
what is the price of the head ported ready to bolt on? thanks
Posted By: RemCharger
Re: 440 Source CNC heads - 09/27/09 03:21 PM
Posted By: JAKE68
Re: 440 Source CNC heads - 09/28/09 12:51 PM
Quote:
Jake
What was the car spec.
Mick
The car is a 64 plymouth. 500in. 440 source heads that MCH cnc ported, stock crossram,stock max wedge carbs,tti headers,.590mp cam,coan converter,4.56 gear, s/s springs. Car 60's in 1.4-1.45 range. 3450# w/driver. last weak it went 10.42@130 at norwalk.