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Other Engine build, 340 6v

CSM
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CSM

CSM

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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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