512 Stroker Build based on Joflaig/Ron in the archives into a '73 charger w/ 400

[fy469rtse]

You will want to revise your oil pick up sump, if you go any over the 512 , keep in mind these sizes are with max bore sizes assumed, but getting to the point 528 543 you can't use the stock location for oil pick up , so pick up, line in sump, so out side lines had yadda yadda and so forth

[firefighter3931]

Back on topic ; do the engine you want right off the hop. For your needs a 493 kit from Mancini would work just fine with the EZ heads and a solid flat tappet cam. Friend of mine runs 10.70's with a pump gas 493 in his 3750 lb raceweight street car.

The Mancini 493 uses 2.2 mains so you have lots of clearance to run an internal pickup. The street hemi oilpan sits flush with the k-ember so no issues with ground clearance. Oil capacity is ideal at 7 qts. Ran this setup in the old 446 that routinely saw 6500 rpm and pressure was rock solid. Nice pan with good baffles for excellent oil control when used with a windage tray.

Keeping it simple will keep costs down. Spend the money where it counts....heads/cam/intake/carb etc....

Good example ; my old 446 had a stock crank, stock rods, heavy TRW pistons....nothing exotic by any means in the shortblock. Spent the money on a mild portjob (Edelbrock RPM heads) and a custom solid flat tappet cam. That combo made 535hp/540 tq and ran 11.60's@116 with a raceweight of 4150 lbs.....on pump gas ! 


Ron

[Challenger340]

It's my opinion that you already are making the major rookie mistake, getting too many opinions from too many sources. Go to one good engine builder and pay him to design you an engine for your purpose. Or do what you are doing, put a frog and a pineapple in a blender and turn it on to make dinner.

I already got enough problems working with the guy that told me I was too expensive to build his engine and when he brought his BB Chevy to me to dyno he had the roller lifters twisted in the lifter bores and they were running caddywampus on the cam lobes. He had flipped the lifters over on the tie-bar and then installed cam followers. We found those before we fired it because we pulled the head to fix the cylinder that had 90% leakdown.

Yeah Bob, me too........me.........too!

This is very good advice 

You too ?
I feel like a specialized "janitor" some days ?

[Rmetzger93]

Back on topic ; do the engine you want right off the hop. For your needs a 493 kit from Mancini would work just fine with the EZ heads and a solid flat tappet cam. Friend of mine runs 10.70's with a pump gas 493 in his 3750 lb raceweight street car.

The Mancini 493 uses 2.2 mains so you have lots of clearance to run an internal pickup. The street hemi oilpan sits flush with the k-ember so no issues with ground clearance. Oil capacity is ideal at 7 qts. Ran this setup in the old 446 that routinely saw 6500 rpm and pressure was rock solid. Nice pan with good baffles for excellent oil control when used with a windage tray.

Keeping it simple will keep costs down. Spend the money where it counts....heads/cam/intake/carb etc....

Good example ; my old 446 had a stock crank, stock rods, heavy TRW pistons....nothing exotic by any means in the shortblock. Spent the money on a mild portjob (Edelbrock RPM heads) and a custom solid flat tappet cam. That combo made 535hp/540 tq and ran 11.60's@116 with a raceweight of 4150 lbs.....on pump gas ! 


Ron

Thanks so much for your input, Ron. It really helps more than you know.  My "Rebuilding MOPAR Big Blocks" book showed up today, so I've been buried in it, learning as much about the process as I can. Is there a particular set of reasons for choosing the Mancini 493 over the 440source 512? I believe your opinion, just curious. Should I get the EZ's ported by Dwayne (hasn't answered my email, is that normal for him?) or just run them OOTB? Also, is there a particular cam that you would suggest? And lastly, going back to Joflaig's build list from earlier, what would you change along with your other proposed changes, or would it stay mostly the same? (I hate to keep going back to the same build list, but it's the most complete list I've found and I need a complete list!)
Thanks again man, It's your posts and others like yours that are actually getting me somewhere!

[Rmetzger93]

Ok, the machine shop got back to me. They like the build I sent them about a week ago, but they recommend the Holley 950 over the Proform. Here is their quote:

Bore/hone cylinders to .030                                                           $155.00
Inspect block & check for cracks                                                       45.00
Strip block, degrease, install cam brgs. & water jacket plugs               95.00
Balance rotating assembly                                                              195.00
Align hone main brg bores                                                               120.00
Resurface block decks                                                                    110.00

How does that look? Also if anyone has some answers to the questions in my post above ^^ answers would be great! Thanks!

Also, here is the build so far after some input. I'm talking to Dwayne Porter today about the build and my machine shop is on tap.

Compression Ratio: 10 - 10.5:1

Mancini 493 Stroker Kit: Diamond dished lightweight forged pistons wit .990 pin and Diamond moly piston ring set. Eagle 4340 forged crank with 2.200" rod journal. Eagle ESP H-Beam rods. Clevite Tri metal rod and main bearing set.
440 Source Billet Steel Main Caps
ARP studs
ATI Super Damper Harmonic Balancer (elastomer style)
Holley Street Dominator Intake Manifold (low rise single plane) - Part# HLY-300-14
Fel-Pro 1215 intake gasket, valley pan
ARP bolts
Machining: gasket match intake porting
Indy EZ's 75cc (Talking to Dwayne about acquiring and/or porting)
Comp Cams Pro Magnum Shaft Mount Roller Rocker Arms - Part# CCA-1321-16
Comp Cams 3/8 .080 Wall Pushrod set
Comp Cams "stock" springs
Comp Cams Pro Magnum Hydraulic Lifters - Part# CCA-867-16
Fel-Pro 1009 head gaskets
Fel-Pro valve cover gaskets
ARP head bolt, washer set
Machining: push rod hump, bowl blending, intake “cleanup”
Holley 950HP
Dual Feed Line
20-7 Bracket Adapter
Carb insulating Gasket (3/8in)
Summit Phenolic 1" Carburetor Spacer - Part# SUM-G1405
K&N X-Stream Air Flow Assembly, 1.25" drop base, 14 in. diameter, 3" filter height - Part#  66-3040
MOPAR Hemi Oil Pan - Part# DCC-4529884
3/8 pickup
Enlarged oil passage
Fel-Pro 1834 gasket
MOPAR 4.150 in. Stroker / 500ci Windage Tray - Part# DCC-5007345
Engle Hydraulic Cam (k62 intake lobe/ k64 exhaust) (Considering a solid cam, I'm not put off by the yearly adjustment like Joflaig, but I don't know what cam I would use. ANY SUGGESTIONS?)
294/298 advertised running duration
244/250 duration @ .050
.540/.557 valve lift
110* lsa
3 bolt flank
Dura-Bond PDP-17 Cam Bearing set
ARP Cam bolt kit