Moparts

***UPDATE ON 440 SOURCE HEADED STROKER***

Posted By: Brian Hafliger

***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 07:04 AM

I finally dyno tested this 505 cid (4.350x4.250) mopar with 440 source heads that I ported.
9.8:1
custom hyd. roller grind using new xfi lobe
ported source heads
MP dual plane intake
1000HP holley
1 7/8 headers
Made 614TQ @3900rpm and 534HP @5200rpm. Idles nice at 850rpm. Here's a link to the porting post I started a few weeks ago and some pics....
https://board.moparts.org/ubbthreads/show...rue#Post4858551

Attached picture 4960265-dynographs001.jpg
Posted By: Brian Hafliger

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 07:05 AM

Engine pic:

Attached picture 4960266-dynographs002.jpg
Posted By: Brian Hafliger

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 07:05 AM

Engine pic also:

Attached picture 4960267-dynographs003.jpg
Posted By: Brian Hafliger

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 07:06 AM

Intake manifold:

Attached picture 4960268-dynographs004.jpg
Posted By: ScottSmith_Harms

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 07:17 AM

Stout!
Posted By: CokeBottleKid

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 07:50 AM

I think I like the choice of valve covers, motor would look stockish painted orange .
Posted By: 68Fastback

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 08:48 AM

Brian nice torque, are those the headers it will have in the car.
Posted By: Brian Hafliger

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 04:27 PM

Quote:

Brian nice torque, are those the headers it will have in the car.



No these are our beat up dyno headers. He has shumacher headers, so power will likely go down a bit over these.
I think he plans on painting this thing like a stock engine so only tattle tale is the carb and intake but painted the intake won't be a quick give-a-way.
I was really surprised at the TQ. And even the HP! I figured it might go 500HP but it went quite a bit over that.
I just can't imagine how this DART is going to drive around with stock type tires
Posted By: 512 VALIANT

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 05:02 PM

DO YOU HAVE FLOW #'S ON THE HEADS THAT YOU PORTED?
Posted By: Brian Hafliger

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 05:17 PM

Quote:

DO YOU HAVE FLOW #'S ON THE HEADS THAT YOU PORTED?



At the very top of this page, just above the first pic, there is a link to my post on porting those heads. I did not do a whole heck of alot of porting to them, rather just a mild street port job. No sand rolling, just re-did the valve job, slight chamber work, slight bowl work on intake and more on ex., and opened up the pushrod pinch on the intake side. That was it!
Brian
Posted By: patrick

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 05:38 PM

would be interesting to see back to back pulls of that intake vs. an eddie RPM intake...

scratch that, just read in the other post you think it's a copy of the RPM...
Posted By: ZIPPY

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 05:46 PM

Nice torque numbers!

The first time the car owner does a 360 trying to leave an intersection, he might reconsider the tire choice...
Posted By: Brian Hafliger

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 06:08 PM

Quote:

Nice torque numbers!

The first time the car owner does a 360 trying to leave an intersection, he might reconsider the tire choice...



LOL...yeah I'd pay $$$ to see the look on his face when he does stab it to see what it's got.
Posted By: AndyF

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 07:05 PM

Which of the XFI lobes did you use? I have a XR292HR cam that I was going to slide into my 505 motor for some dyno testing but I haven't gotten to it yet.
Posted By: Hot 340

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/20/09 10:52 PM

How come none of you dyno guys post videos?
Posted By: Brian Hafliger

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 12:06 AM

Quote:

How come none of you dyno guys post videos?



Because we're too busy! Just kidding...video will be tonite. Also going to put it on my website when I find time.
I'm using the 3017 lobe for the intake, and 3317 for the exhaust. It's on a 113 lobe center too.
Posted By: 440Jim

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 12:50 AM

Quote:

Made 614TQ @3900rpm

That thing is a torque monster, stump puller... @ 3900 rpm!
Posted By: 69Cuda340S

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 01:03 AM

Impressive torque. And its going into a street driven Dart. He will be able to scare some passengers with that car for sure.
Posted By: goldmember

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 03:26 AM

Why are the torque and hp crossing paths at 4300rpm?
Posted By: RobX4406

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 03:37 AM

Quote:

Why are the torque and hp crossing paths at 4300rpm?



Better look again...
Posted By: goldmember

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 03:39 AM

I did. Is there another something I should look at?
Posted By: mopardamo

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 03:53 AM

Hello,

Maybe 5252?

Damon
Posted By: AndyF

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 03:54 AM

They cross at the right spot. Both are around 530 in the 5250 range. You just have to study the screen for a moment to see it.
Posted By: goldmember

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 04:12 AM

OK
Posted By: Brian Hafliger

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 06:33 AM

Video:
http://img531.imageshack.us/my.php?image=dynovideos001rp9.flv
Posted By: B1Fish540

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 06:52 AM

Cool vid,,sounds really good!
Posted By: topbrent

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 06:55 AM

This may be a silly question, but what kind of fuel economy could one expect out of something like that.


For example...if it were installed in a 1976 3/4 ton truck.

That massive tq curve and small cam would allow you to keep your foot out of the throttle when towing up big grades.
Posted By: Brian Hafliger

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 07:31 AM

Quote:

This may be a silly question, but what kind of fuel economy could one expect out of something like that.


For example...if it were installed in a 1976 3/4 ton truck.

That massive tq curve and small cam would allow you to keep your foot out of the throttle when towing up big grades.



Funny you should bring this up. Carl, my customer was joking about the "racing" carb I told him to run on this engine. He likes oem stuff so anyways...with some load on the engine at 2300rpm, fuel flow was pretty low. I would imagine your right, but it would depend on the rpm of the engine at your typical cruise speed as to just how much fuel the engine will consume.

I can tell you with a smaller carb than this one, and tuned sharply, fuel mileage might not be so bad...but when you floor it....fogetaboutit
Posted By: moparmanjames

Re: ***UPDATE ON 440 SOURCE HEADED STROKER*** - 01/21/09 02:45 PM

"Why are the torque and hp crossing paths at 4300rpm?"

Because they are using 2 different scales for the HP and TQ.
© 2024 Moparts Forums