505 Stroker build

[Musicman]

We'll be right here waiting

[TexasStroker]

We'll be right here waiting

Yeah, looking forward to the numbers!

[dstryr]

Will who owns the shop fired the motor Tuesday for its break-in and yesterday for a second run.  After the first run he changed oil and filter and all was well so let it cool overnight and ran it again yesterday.  I stopped after work and the motor was almost cooled off from the run earlier in the day and they had bolted on a set of headers.  He fired it for me and it sounds like a beast.   Idles well at around 1000 rpm and using the stock distributor with a pertronix ignitor under the cap.   Will said the exhaust temps all look good and they only adjusted 5 rockers after the break-in run.  Ron, the Firecores will go on before the dyno test.

I put the promax metering plates in the outboard carbs with 84 jets and stock 64s in the center carb.  We will change springs before the dyno runs because he opened it up to see if the outboards were coming in and they weren't.

I'll  have dyno numbers next week...

[Musicman]

Antisipation is killing us here    

I see your jetting is similar to mine... I'm running mine a little richer... 88 outside, 68 center, because I don't want to take the chance of having it go lean on me during the tests. I'm also running a different set of carburetors (BG Six Shooters) on my build, so my outside carbs are mechanical not vacuum operated. All 3 carbs have squirters also, so it's a little different than your setup in that respect as well.
Mine is getting done tomorrow, so we'll see what happens. Wish me luck

[firefighter3931]

I'll  have dyno numbers next week...

You tease ! 

 
He fired it for me and it sounds like a beast.   

Of couse it does...that ain't your grandpa's 318 ! 

Ron, the Firecores will go on before the dyno test.

Good plan....optimize the fuel curve while you have it on the dyno. The Firecore wires are know to lean out a fuel curve due to the increased spark energy. Get that Badboy dialed in and please hurry up, lol ! We're allmost as excited as you are ! 


Ron

[dstryr]

Here's a quick update.  The outboards weren't opening last week so I dropped off a set of springs on Friday and they changed them over to the lightest spring to get things started in the right direction. They had put a bolt on the throttle to manually open the outboards and at least get some numbers and see where the a/f ratios were and EGTs, and had just changed to the lightest springs to continue tuning.  

With 36* total advance and 64s center and 84s outboards it made 560hp and 630 ft. lbs torque.  It was a little lean so they went to 66s and 86s and played around with the timing 34* and 38*.  It liked 36* and they will go back to 84s in the outboards and expect the numbers to come back and even improve a little.  Will liked the 66s in the center.  Hopefully the lighter springs will get things going in the right direction.   I don't have an unlimited tuning budget so we will get close and I'll work on it after it is in the car, if it still needs tweeking.  

More to follow once I get a dyno sheet.

Thanks for all the help and advice!

2nd test of the day, 1st one I was there to see:
 http://www.youtube.com/watch?v=SUHDi-iPf9A

3rd test :
 http://www.youtube.com/watch?v=LgoJBORKieQ

[firefighter3931]

Right on Frank !  I'm sure there's additional Horsepower in there with some tuning. Man, gotta LUV 630ftlbs of torque 

Looking forward to some dyno data 


Ron

[Musicman]

Looking real good Frank

I have to wait until I get home to view the vid's, so I'll get to them this evening.

Do you know what kind of vacuum you were pulling in those first runs Hopefully the lighter springs will do the trick

Keep us posted

Mike 

[dstryr]

Well, I'm done spending my money on dyno time.    I'll pick the motor up and have a printout by the end of the week.   Will used a set of 1-7/8 fenderwell headers for the break-in and initial tuning but with my 2" Doug's Headers the numbers crept up just a tad, +38hp and +22lb/ft of torque, to  598hp and 652tq.    

He pulled to 5800 and said it wasn't near ready to quit.  Now all I need is a race car. 

[Musicman]

Nice job Frank... Congratulations

With all you guys punching out these big numbers lately, I'm starting to feel a little intimidated... maybe I should have just stuck to plan "A" with my build...

Nah, not really I like it just the way it is



P.S.: Cool Vid's

[firefighter3931]

with my 2" Doug's Headers the numbers crept up just a tad, +38hp and +22lb/ft of torque, to  598hp and 652tq.    

He pulled to 5800 and said it wasn't near ready to quit.  Now all I need is a race car. 

Wow, that's an excellent improvement ! 

I had a feeling there was more in that combo and it looks like they found it 

Congrats Frank ! 



Ron

[dstryr]

Sorry for the pic quality- the printouts were light and I couldn't get a scan so these are the best I could do with the digital cam and editing.

Dyno sheet says Sweep 12... I guess they were busy while I was away.



Avg Corr HP  540
Avg Corr TQ  614
Avg Acceleration  830



Peak Corr HP  598  @ 5700 RPM
Peak Corr TQ  651 @ 4500 RPM







Avg Fuel Flow  31gph
Peak Fuel Flow 37gph
Avg BSFC       .383
Peak BSFC      .435

[super_dave]

Wow thats awesome.  Good for you, should be fun to have that under foot.

So, whats a build like that cost roughly with dyno time etc... over / under 10,000?

[dstryr]

Thanks, Dave

I got a lot of great advice from guys on moparts.com, the a12.com forum and especially HERE to get this far and I hope this helps.  Here are the round numbers; I'm sure I spent more than a lot of guys might who have parts hoarded, but less than others.



Cam, timing set, EDM lifters and HS 1.5 ratio rockers from Dwayne Porter   $1100.00
440Source heads and rotating assm.                                                      $2800.00
Porting, valvejob and back-cut valves by Harry's Heads, Sioux City, IA       $  766.00
Machine work including 1 sleeve, align hone and assembly                         $2180.00
Smith Brothers pushrods                                                                      $  160.00

Add to that a 7qt pan, Melling HV oil pump, ARP head bolts & main studs, Damper, windage tray, intermediate shaft, water pump & housing, and a few other things that I didn't want to pull off the original motor for the car, and 10* locks & retainers......another $500-$600.

Plus the Promax Max Pack kit with rear base plate, outboard jettable metering blocks, and center carb block, $450.00.

Then $600 for Doug's 2" Headers, another $350 budgeted for a 3" exhaust system, dyno time for $700 which included priming the engine and re-lubing the camshaft before fire-up, installing the intake/carbs, break-in for 3 20-minute runs w/ oil changes after 1 & 3, changing manifolds to headers, then changing to my headers for the final pull & numbers above.  

So for basic new parts and machine work, just over $7k.  The rest adds up pretty quick, though...


Last thought,  the 440Source heads are advertised to flow 290cfm OOTB and Harry's Heads measured mine at 254 before and 283 after for a gain of 29cfm.  Most guys have found the number to be closer to 255 OOTB, like mine.  FWIW, it might matter for someone looking at these heads.

Frank

[super_dave]

Frank, thanks for the reply, I appreciatte it.  For that kind of power I think you did really well cost wise, not that I know much about these things    I initially had looked at some turnkey engine deals all at $11,000.00 and up, but the power numbers are considerably less.  Are you using this build mainly for street use or strip?  Thanks.

[dstryr]

Dave, I'm real happy with the results, especially for a pump gas motor.  It will be in a car driven almost entirely on the street.  I'm 2hrs from any race track now and no budget to race consistently.   I'm really looking forward to spring and getting back on the street.   A non-roller rocker would have been a lot less and given up a few hp.  The motor looks very stock, also. I cut the baffles from a set of valve covers to clear the roller rockers so the headers will really be the only thing that looks non-stock, plus the extra wire for the pertronix Ignitor under the dist cap.