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Other Engine build, 340 6v

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post-573-0-64439500-1427328021_thumb.jpgAll, 

 

Anybody with old mopar experience?  If so, feel free to chime in.  

 

I am going to be in a position in the next year to start work again on my long neglected 70 Cuda.  I've owned the car for quite a while, and its sat in the barn at home awaiting (as my dad put it) "time on your part or interested grand-kids!"  Well, I may just have time starting spring 2016 and I am not ruling out the kids...  So, lets discuss engine options. 

 

Overall, the car is an original 318 auto sublime green car.  I have the rest of the parts to finish the car into a power bulge and nearly correct clone of what a 6pack non AAR cuda would have been. See photo below of what it looked like when I drug it home. It has since been stripped and is awaiting patch panels and body work.  

 

It has been converted correctly to a 4sp car with all the correct parts.  8.75 489 case rear end and still has the small block K frame.  

I have several A833 4sp transmissions to choose from that I've collected, and plan on trying both the old ball and detent style and newer style out.  

 

I have the parts to build a 340-6 pack (non T/A block & heads). I have two third members, and plan on keeping a 2.73 around as well as keeping the 4:10s around for track use since I have both now.  I will likely end up with  3.55 final drive. 

 

The engine block will likely be a 68 or 72 .30 over 340 casting with steel crank. stock stroke.  Stock reconditioned rods. I plan on a set of KB Hypereutectic flat top pistons.  

 

I have a set of X heads as well as several sets of J heads that I plan on starting with and doing a few iterations of porting until I finally give up and buy a set of Indy or Edelbrock heads.  With the factory heads, and allowing for the smaller chamber Edelbrocks later, I will have to run with a lower 9.4to 1 compression on the Stock 70cc heads, but will up that to about 10.2?ish to 1 with the 63cc Edelbrock heads.  (all assuming stock deck height) I would like to push this to about 10.8-11:1 with proper quench and cometic gaskets in the long run.  

 

The cam I am planning on experimenting with and contacting a few folks.  The car is not a daily driver and I want it to be in the power band between 3000-6500+.  As the cam and heads are going to be a bit of an iterative and fun process, I plan on trying some different stuff out.  Also, keep in mind it's a 4sp car with zero vacuum components.  It even has a manual foot operated windshield washer pump.

 

"would be nice" Items will be a new MSD vac & mechanical ignition setup as well as new metering blocks for the outboard carbs so I can easily jet them.  

 

So, all that said.  Any thoughts?  

 

Edited by CSM

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  • Owner

I've got old Mopar Experience... :wink:

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I'll talk with my Boss Lindy about your idea of setup and see what he's got to say. He's a real pro at setting up the old school muscle.

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    Seeing Mikes old car reminded me of my high school days, had several class mates with chargers and road runners of that vintage and we did fun stuff similar to the video link below from the movie "Out Cold" one of the funniest movie scenes in my mind lol.

    Gotta love the snow plow package on the old girl. :lmao2:  :lol:  :lmao: 

    https://www.youtube.com/watch?v=bHDscnYlwjc

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