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1  Tech Talk / Engine Repair/Modifications / Re: Decoding 390
 on: Yesterday at 23:02:43 
Started by 70Javelin360 | Post by Rebel Machine
Castings are consistent with a '70 390. Trans is a B/W M12.
 
The intake is the standard (not Machine) 4-bbl intake.
 
Could have been in any car equipped with a 390. Don't know if there's a way to tell what it originally came out of.
 
-Steve-
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2  Tech Talk / Engine Repair/Modifications / Re: Decoding 390
 on: Yesterday at 17:42:26 
Started by 70Javelin360 | Post by Hurst390
If it has 1/2" headbolts it would be a 70 block.
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3  Tech Talk / Engine Repair/Modifications / Re: Grafting Mopar Victor 383 to AMC RPM Air-Gap
 on: Yesterday at 06:20:04 
Started by SuperStockAMX | Post by SuperStockAMX
And to throw some gas on the fire, I stumbled across a pretty good deal on a new home for the family 04/27/16. All you readers would care about is it's got a 4-car garage with the 3rd bay being a tandem arrangement. So all my tools, benches, etc. go in the front and the AMX behind. Also has a big side-yard with RV gate in a cup-de-sac. For an HOA neighborhood, it's a rare find and it sits on .48 acres. Basically about 3/4 mile east is where I'm moving in the same community. Wife gets a bigger kitchen, kids all get there own rooms, everybody gets a pool and I get a nicer garage! The moving starts mid-end of June. And I already told my wife the race car gets driven on the trailer and off the trailer at the new home! Because I know that a move is the worst thing for a car project as one item after the other goes missing. We've lived in this home since 1999 so I am not looking forward to going through the packing!  
But it's all good and can't wait to indoctrinate the new neighbors to the race car....Smiley
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4  Tech Talk / Engine Repair/Modifications / Re: Grafting Mopar Victor 383 to AMC RPM Air-Gap
 on: Yesterday at 06:18:07 
Started by SuperStockAMX | Post by SuperStockAMX
Here's an update which I posted on another forum:
 
Oh geeez....I just noticed I was running this "Build" and it's been a little over a year since I posted anything. You'll find this interesting...
 
The real issue: Maybe there was some oil pump cavitation going on but when I pulled the ATI balancer off I noticed it came off rather easily. Then I took the balancer removal tool off, grabbed the balancer and placed it, by hand, onto the post of the crank. Literally threw it on. Sometime later, I decide to see what's going on and measured the O.D. of the crank post and the I.D. of the ATI balancer. There is .012" clearance. Why" I have no idea but this ATI balancer has been on numerous engines of mine and it has always been the typical snug fit. I called ATI to determine the I.D. Spec. We determine it is out of spec, oversized .005". Assuming the machine shop honed it overzealously? And why would they do that? ATI confirms clearance should be .001"/.0015". I ask ATI "if there was .012" clearance, what would you expect the engine to look like?" They said "I imagine there would not be much bearing material on the mains and rods" (I had not told them the condition of the engine). I said that was exactly what I had. All bearings were shot. And the cam & lifters.  
I check the O.D. of the crank post. It's undersized .007". Total clearance is .012" against a recommended .001". And why is the crank post undersize? I've used the crank and balancer before with no issues. I'm at a loss to explain how the balancer is .005" to big on the hub and the crank is .007" on the post! But we are not dealing with that shop anymore (after 15 years?) as the owner's kid is onboard and I think that is the issue.  
So bottom line, I send the crank to Shaftech http://www.shaftech.com along with my balancer. I had them weld and get the #5/6 rod journal (could have fixed it with .010" turn but I wanted all rod pins the same) back to spec and weld and turn the post to .001" / .0015" clearance. Wow, do these guys do great work! I measured every machined part and it is exact across the board. Finish is outstanding!  
 
Bought a new set of Oliver Rods. http://oliverracingparts.com/connecting-rods/gm/ultra-light-gm/
Bought Crower Bushed .903" roller lifters. http://www.crower.com/lifters/roller/mechanical.html?cat=1738
Bought a MasterLube brand pre-oiler / Accumulator (because now I'm really gun shy) http://masterlube.net/racing.htm
Bought King rod & main bearings in XP try-metal
Pro-Gram Engineering 4-bolt billet main caps. http://www.pro-gram.com
Super Stock heads ready to bolt on.  
Super Stock roller cam is by Red Line Racing Cams w/ .500" lobe lift and is machined as well as the crankshaft. Stuff shouldn't be hidden in the block! http://www.redlineracingcams.com
Found a rare find...somebody that had a custom built AMC oil pan with a full kick-out and rear sump. Paid $250 for it. This is for dual external oil lines. I had to do a few modifications to it to clear my starter and relocate the oil pickup it had with driver side outlets to a swinging pick-up with passenger side outlets.  
Also had to modify the pan for my starter.  
Bought crank scrapper kit from Ishihara-Johnson using the teflon scrapper and passenger side / drivers side option. http://www.crank-scrapers.com
Building: I have grafted an AMC Edelbrock Air-Gap Performer RPM base to an Edelbrock Mopar Victor spider. Turned out to be way more complex than I initially thought but somebody needed to be the trailblazer as the Torker, while doing a good job, I felt there was something I could do better. The guy doing the work is a true artisan and this involved taking out and rebuilding new runner divider walls with re0contouring the angles. I just got an update from him today and all the welding is done and now time for epoxy and final finish. Will use the Torker first as we really want to see what improvement (or loss) we have here. I suspect it will be worth 20+ HP average.  
 
Looking at my last post, I determined the Indy timing cover was NHRA SS legal but not the Razor oil pump. So OEM cover & pump for me. I did get anti-cavitation slots milled into the pump gear.  
Since last year, besides accumulating parts, I added a Chris Alston Chassisworks rear-end mounted 40-spline ARB. I replaced the nylon bushings with oil-lite flanged bronze bushings as I could not fathom thin, nylon business were going to be safe. Despite what ChassiWorks advised. I found the bronze flange bushings that required a slight trim on the lathe for about $7.50 each. I was forced into a rear-end mounted ARB as I still have the OEM frame rails under the car. https://www.cachassisworks.com/p-2715-splined-arb-axle-housing-mou.aspx
I also added these trick front-end limiters instead of using chains: http://trzmotorsports.com/wp2/?product=double-aa-performance-travel-limiters
 
I have the crank in and all bearing clearances are spot on.  
I just put #1 & #2 pistons / rods in the block the other day and Next week (Monday?) will have the cam degree'd and than I can check piston to valve clearance. Hopefully that doesn't lead to modifying pistons or even worse, new pistons. I suspect I'll be OK but I don't know for sure.  
 
And to throw some gas on the fire, I stumbled across a pretty good deal on a new home for the family 04/27/16. All you readers would care about is it's got a 4-car garage with the 3rd bay being a tandem arrangement. So all my tools, benches, etc. go in the front and the AMX behind.
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5  The Lounge / General Chat / Re: AMC Madness: The Machine Cars
 on: 04/30/16 at 03:25:40 
Started by Class Guy | Post by amxdreamer
Another good article by long time AMC fan Richard Truesdel!
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6  The Lounge / General Chat / Re: AMC Madness: The Machine Cars
 on: 04/30/16 at 03:23:25 
Started by Class Guy | Post by amxdreamer
That's a good article by Richard who is a long time fan of AMC.
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7  Tech Talk / Restoration Corner & Member's Projects / Re: "Holey Spirit" on a Spindle!
 on: 04/30/16 at 03:02:32 
Started by Turbo Tom | Post by amxdreamer
Nice!
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8  Tech Talk / Restoration Corner & Member's Projects / Re: Bob Webb's unique '72 AMX 401
 on: 04/30/16 at 03:00:40 
Started by NellsJavelin | Post by amxdreamer
Looking forward to seeing in Rockford!  Smiley
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9  Tech Talk / Restoration Corner & Member's Projects / Re: 70 Hornet "SC401" Build
 on: 04/27/16 at 10:13:53 
Started by KyleCim | Post by KyleCim
I absolutely cannot wait to get back to the track, unfortunately it won't be as soon as I wish. Track has a few VP ET series weekends in a row then I am away for a wedding for a week then come back for another wedding. May is nearly blown already!
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10  Tech Talk / Restoration Corner & Member's Projects / Re: Bob Webb's unique '72 AMX 401
 on: 04/27/16 at 02:25:50 
Started by NellsJavelin | Post by brownSpirit
It sure looked nice to me at the Andover show in Mass.  I don't think there is a one size fits all idea of Amc perfection, haha.  I hope the new owner gets the car where he wants it and enjoys it, that's the important part.  Andy
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