440ci Magnum Build

[Carlwalski]

Carl,
 
  I'm not much help here, but late 2008 I put a Profrom 850 on my car with an electric choke. I just found the manual chokes to be a pain from past experience. There has to be a bend in the cable, so it always sticks. With the electric choke, it's as simple as unloosening a couple of screw and turning the pod to increase, or decrease the amount of time it takes for the choke to open up. In my case, even in driving in cold weather, the choke is on the minimum of time. Rotate the pod all the way to the right for that. This Proform will be a big step in waking up your engine...Let me tell you.   

Thanks Mike! Nice to see you again and great to see you still have your classic burgundy? (my bad if it's not lol) Challenger. I'm set now on the 850cfm Proform and the Street Dominator. Just need a cam, lifters and possible head work info and I think I'm good to go. What intake are you running Mike?

[Chryco Psycho]

Mike never takes credit for what he does know , no way he would have as many posts as he does & not know stuff 

[Carlwalski]

Well I flowed a few sets of my heads but I am more concerned with velocity & swirl for street engines than massive flow #, i do not open the heads up much but I remove restictions to flow , narrow valve guides raise the roof of the ports & leave the floors alone  , I widen by the pushrod of course . I would have to dig up a flow sheet but I THINK I hit 270 on the intake side & 230 exhaust but I could be off , I do install the larger 1.81 exhaust valves as it increases the short side turn & promotes flow .
 I live in a cold climate & have no issue starting these cars in even cool weather , just pump it a couple of times nurse the throttle for a minute or so & you are good to go , if you never see snow you will not have an issue

Thanks Neil, I know you aim at getting big #'s and in doing so look at every little aspect to achieve this and in doing so, you are one of the best with our MoPar engines. However, in your honest opinion, for my situation, do you really think it's worth porting the heads? What hp gains could I see from a good cam change, the Dominator, 850 and unrestricted air cleaner set up?

Any more input on the cam? Not sure where to go on that, the 528 MoPar still looks nice. For me, I guess I want a pretty decent change, I would hate to do this work put it all together then find the differences are just about unnoticeable. If I could I'd like to lean towards the performance side more than the "mild", if that makes sense lol.


Thanks guys!

[Chryco Psycho]

I hve unlocked as much as 40 HP with no changes other than ported heads so it is worth it umm Yeah , I charge $500 to port heads  so close to 10 / HP seems cheap to me

[Carlwalski]

Dang!! That's all I needed to hear lol. OK, so I want to stay stock internals, well, 0.30" with a cam to be sorted what, in your opinion would you port my heads to, in and ex. I'd like to port them and if possible keep everything stock, unless you can see big gains being stopped but 1 of the main parts then I might change them. Would the intake have to be port matched? I'm guessing so.

[Chryco Psycho]

I would start with the Mopar porting templates & yes I match the intake port size to gasket size

[Carlwalski]

Thanks CP, where does one find/buy these templates or will most machine shops have this info on file?
OK, so far I/we've confirmed the parts below and I'm happy with the following:

Holley Street Dominator Intake - Part# 300-14
Proform 850cfm. Electric Choke, Mech 2nds - Part# 67214
K&N X-Treme Air Flow Assembly - Part# 66-3040
Port & Polish 906 OE Heads & Intake (Matched to Template)
MP Valve Cover Gaskets - Part# P4120101


Just need a good cam and lifters.

[Chryco Psycho]

I believe Mopar still sells them

[Carlwalski]

Cool, I'll search around and see what I can find and if I get stuck will post up.



In terms of a camshaft which is the main reason and culprit for doing all this, now knowing what I'm doing a little better, what do you think? I like the looks of the cam sledgehammer posted, the Mopar 284/528 cam but I'm no prom so don't know if it's the one I should use. Nothing from Compcams or Engle? Please keep in mind I'm not after every available hp that can be squeezed from the engine like I know you'd usually build and what some people would usually ask for, I'd just like a better cam that I have now (214 @ .50 / 0.438).



Thanks!!



EDIT: This must be the template I need, correct?  What exactly do the templates go to in terms of port sizes? Does it just give you one set template or does it give the machinst, say, 3 or 4 different port sizes to choose from?

http://www.summitracing.com/parts/DCC-4120437?autofilter=1&part=DCC-4120437&N=700+115&autoview=sku


OK, so that's the heads, what do I need to give for the engine machinist to do the intake? Does he just match the port design on the head intake? Makes sense too, just trying to cover everything so I can order everything without leaving anything out. Cheers!

[FJ5_440]

Those are the ones.  You cut out the shapes and insert them perpendicular to the head surface at different angles.  Basically just grind away anything keeping the template from being inserted, and blend the areas together.  It is pretty basic as far as port work goes.  The guys who actually know what they are doing will probably chime in and give you more detailed info about what to grind and what to leave alone.  Don't get too aggressive unless you know what you are doing.  I sure don't.

[Carlwalski]

Thanks Shane, I definitely won't be doing the port work, that's a specialists job IMO. That sounds good, I'm sure most pro machine guys will inspect and perhaps spot improvements as well, with or without the templates, just nice to have a template available to get the majority of the port work done.




Camshaft time, what's yall opinions?

[Roppa440]

600hp the limit for the street.:: lol

Yes if you actually drive the car like a real car. I have several friends with "street" cars that are more powerful but they cannot drive them fast up and down mountain roads like me or drive hundreds of miles, race all weekend, and then drive hundreds of miles back home again.

This supercharged and injected HemiCuda belonging to Mark Sheridan here in the UK is a street car and makes 1200hp. But although it can drive to the local meets I doubt it would fair well on a long run or mountain pass.

[moper]

For what you have, and what it sounds like you do, I would stay conservative ont he cam. What you have is small... Not even conservative. Not knowing much about your engine... I'd go like this:
Comp XE274H cam, lifters, matching springs
Heads will need to be cut for dual springs and small valve seals. If they are off and apart have the bowls blended and the intake gasket matched. Nothing more than that (about what the templates do...).
Edelbrock RPM intake
Holley Street Avenger 670 Vaccum Secondary

Leave the rest as is. IMO, without knowing the details and quality of your existing build, going more aggressive simply doesnt make sense to me. The above stuff will get you a pretty simple and realistic 425-440hp depending on what you already have. This is of course only an opinion and subject to the standard "Comp sucks" comments...lol.

[Carlwalski]

I know the .528 cam will clear stock configuration with 1.5 rockers... I have heard that the .557 cam clears but that depends where it has been put in at    Now on the cam suggestions what CP was meaning is it will need to be checked for sure if you have enough piston to valve clearance!!!! .080 Intake and .100 Exhaust is a rule of thumb for clearances but guys do run them tighter... no one in the country will be able to tell you if like a certain comp grind will clear etc... The IVO IVC EVO EVC is different on every cam.... 

Thanks!

For what you have, and what it sounds like you do, I would stay conservative ont he cam. What you have is small... Not even conservative. Not knowing much about your engine... I'd go like this:
Comp XE274H cam, lifters, matching springs
Heads will need to be cut for dual springs and small valve seals. If they are off and apart have the bowls blended and the intake gasket matched. Nothing more than that (about what the templates do...).
Edelbrock RPM intake
Holley Street Avenger 670 Vaccum Secondary

Leave the rest as is. IMO, without knowing the details and quality of your existing build, going more aggressive simply doesnt make sense to me. The above stuff will get you a pretty simple and realistic 425-440hp depending on what you already have. This is of course only an opinion and subject to the standard "Comp sucks" comments...lol.

Dang, you mean drop from a 800cfm to a 670cfm? I like to drive pretty hard (in response to "what I do" lol). The quality of the build will be good, no doubt just when I did this way back when, the Challengers build was back to stock. Good to hear you agree with the porting to template flow too, sounds good.


Still not sure what to do with camshaft, might be best to just pull the old cam out, remove the heads and check the rockers at that stage and order a cam to suit with known measurements?



Thanks everyone. 

[Roppa440]

Everyone seems to have an opinon of what a street car is.... but putting a number what is is the limit for a street car is silly 

In california that car you posted would be legal but not here in PA from being so high out of the hood... Local laws has an affect whats legal or not.... 

Absolutely. But you responded to my comments about being careful with how much power you try to put down with BFG tyres and 15" Rallye wheels. I said my pal's car was just about undriveable with his 600+hp Hemi. And it is. But I wasn't putting a figure to anything.