Finally got my 520 RB finished!!

[jordan]

After a year of waiting, I have a running stroker big block!!!  Here is some of my parts list (by memory), I will get the list from my builder later this weekend.  Overall, I am real happy with the results.

1975 440 block out of a motorhome (440 Source calls it a superblock)
Machined for 4 bolt main caps
JE pistons  (.035 over)
Eagle stroker crank   (I dont have the bore and stroke dimensions)
Eagle H-beam rods
ARP hardware
440 Source Stealth head, ported, oversized valves:  2.19 in., 1.88 ex
Crower cam billet steel   Duration 303* in   Lift: 537* (1.5)  572* (1.6)
                                                   311* in          555*          592*
                                     Lobe Center   106 in.  114 ex  (110 ave)
11:1 compression
Dual valve springs
hydraulic roller lifters
Stainless steel roller rockers 1:6 ratio
Edelbrock aluminum intake manifold 6bbl  original 1969 1/2
Original Holley 6bbl carb - modified air bleeds and power valve    64 main jets on center  84 main jets on quick fuel jet plates front and rear
93 octane pump gas,  Stock air cleaner with K&N filter, all painted orange
tested on a stuska power pro dyno at 85% correction factor
MSD 6 AL ignition, mopar coil, Mopar distributor with recurved mechanical advance, vacuum advance, 12 in. of vacuum

 RPM          torque          HP
2800          596              318
2900          603              333
3000          587              335
3100          588              347
3200          584              356
3300          593              373
3400          602              390     
3500          604              402
3600          605              415
3700          617              435
3800          630              456
3900          638              474
4000          628              478
4100          621              485
4200          619              495     
4300          612              501
4400          605              507
4500          603              516
4600          602              528
4700          603              540
4800          599              548
4900          594              554
5000          579              555
5100          563              547
5200          551              545
5300          541              546
5400          533              548
5500          523              548

638 ft lbs   554 hp

oil pressure 70-76 lbs
air fuel ratios at 12:1 to 12.5:1  This motor made its best power curves in the 12s rather than leaner


I will edit this when I get all my paper work from my builder.  I am sure I missed something you guys want to know.  I am just a little excited about the results that I couldn't wait to post. 

Think it will spin the tires?                     Jordan

[Chryco Psycho]

Nice ..... what kind of tires are you running LOL   

[brads70]

     I agree with Neil!.....buy two sets of rear tires!

[ragtopdodge]

What size headers were used w/that dyno?

What brand of hydr-roller lifters?

Nice numbers.  Especially w/a 6-pak.

[jordan]

Roller lifters and push rods are from Howards Cams in Oshkosh Wi.  I try to buy local when I can.  My builder loves these products and can drive to get them when time and mail conspired against us. 

The headers used for the dyno test were hooker competition fender well headers, but I was told they were 1 7/8.  I wondered if they were 2 inches though.  He said they fit around the dyno better.   I plan on using TTi 1 7/8 ceramic coated headers with a x-pipe 3" all the way back. 

[Road_Runner]

Awesome!  This is almost exactly the build I've settled on for my Roadrunner.  440 stroker, original six pack & intake (already have), stealth heads, roller Hyd cam & rockers, etc.  Makes me know I decided on the right combo.  What trans are you running, auto or manual?  I'm planning on a 4 or 5 speed and already have a 4.10 Dana for out back.  Should be a fun ride when we're done!  Definitely share whatever details you have, I can use them as a road map.

Later, Jim