Barracuda Challenger Forum

Author Topic: Ready to build 512  (Read 2770 times)

Offline 1 Wild R/T

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Re: Ready to build 512
« Reply #75 on: December 17, 2016 - 10:54:53 PM »
LOL Hey your willing to try posting links from your phone... Most of us won't even try posting from our phones... So kudos to you...
JS27N0B 70 Challenger R/T Convertible  FJ5 Sublime, Show Poodle w/75,000 miles since resto
WS27L8G 68 Coronet R/T Convertible  PP1 Bright Red, Project
RM21H9E 69 Road Runner Coupe R4 Performance Red, Sold...
5H21C  65 Falcon 2 dr Wagon... Dog Hauler...




Offline 734406pk

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Re: Ready to build 512
« Reply #76 on: December 18, 2016 - 12:21:28 AM »
OMG !!  Yes, BAD ASS indeed! Thanks for the post!  :burnout: That is surely "One Bad Fish" .. Congrats!!
« Last Edit: December 18, 2016 - 02:06:54 AM by 734406pk »
1973 Challenger 440 6 pack auto 3.91 rear
2012 Dodge Ram 3500 dually 6.7 Cummins Fleece EFI Live
1973 Challenger 318 2bbl auto 2.73 rear 22.5 mpg RIP
1970 Challenger TA 340 4bbl auto-Sold and sad
1999 Dodge Ram 3500 dually 5.9 Cummins Fleece tuned VGT-sold
1995 Kawasaki ZX1100E & still alive

Offline 73cudabr

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Re: Ready to build 512
« Reply #77 on: December 18, 2016 - 08:12:21 PM »
#lifegoals haha. Great sounding engine


Offline 73cudabr

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Re: Ready to build 512
« Reply #78 on: January 17, 2017 - 05:41:44 PM »
For those following along builds. One thing i knew I had to do was to purchase all the wear/Miscellaneous parts. I guess I just didn't think how much it would add up to. Add this part lists to your budget if your building from the ground up.

I did end up going with the Mahle flat top pistons. I may be sorry, time will tell in the dyno numbers. I can't find a engine dyno locally, just chassis dyno, so we will have to make a guess of where it's at, at the fly wheel.

I stopped by the shop. He had the rotating assembly balanced perfectly to 0. He put a piece of duct tape on the crank to show me how precise the machine is. Spun the crank and the machine was able to pick up the weight of the tape. Pretty neat. My mechanic said lots of machine shops will balance within a tolerance and it's rare to find somebody who will get it to 0 instead of 1 gram or so. I'm going to have him assemble the short block for me as I don't want to mess anything up. From there we can bolt on whats left.

I pulled my stall converter last night as my builder said he can call comp cams and the head guy will get us a custom grind based on my specs. I have a 3000 stall, 3.23 gears, and need to send him tire height. Also since I want to use FiTech EFI, it may be different from somebody going Carb for vacuum purposes. Going with a roller set up.

After that I need to settle in on my Heads (CNCed of some sort) Order up the FiTech, some roller rockers/pushrods and we're done. Can't wait to have my car on the road, and for better or worse I'll post the build sheet for others to model or stay away from after we see the numbers haha. Either way my car made 250HP and 308 tq to the wheels before, so it should be a drastic improvement, and hopefully with EFI, I don't have to tune it every 3 months.



Offline 1 Wild R/T

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Re: Ready to build 512
« Reply #79 on: January 17, 2017 - 08:36:18 PM »
Accurate balance is nice but honestly when the engine is running theres oil attaching itself to parts & that oil can throw the balance off easily... Seriously aftermarket pistons & rods take between 6-10 lbs off the rotating assembly, thats somewhere between 2700 & 4500 grams... That matters, a gram or two .. Not so much...
« Last Edit: January 17, 2017 - 08:37:51 PM by 1 Wild R/T »
JS27N0B 70 Challenger R/T Convertible  FJ5 Sublime, Show Poodle w/75,000 miles since resto
WS27L8G 68 Coronet R/T Convertible  PP1 Bright Red, Project
RM21H9E 69 Road Runner Coupe R4 Performance Red, Sold...
5H21C  65 Falcon 2 dr Wagon... Dog Hauler...

Offline CUDA8U

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Re: Ready to build 512
« Reply #80 on: April 12, 2017 - 02:35:03 AM »
I think the first questions of this build should have been directed at PSYCHO, he would have gave you all the info needed to get your desired numbers.I also think the 3:23 is a poor choice for any decent sized cam to make power and cruise at the sweet spot rpm,3:55 min I would say. That said I am considering an FITECH efi too and can't wait to hear how yours runs! :canada: :canada: :canada: :canada: