5.7L Hemi, 1968 Barracuda.. Opinions.

where do i go to see your build pictures of your cuda. i'm putting a 5.7 in my 72 duster. could use all the pictures and info.i can get. if you run a 904 or 727 what stall do you need. will the reg. flex plate bolt to the crank and the trans bolt right up to the block without any adapter . when you wired up everything with MSD6 did you wire it into the old harness.
thanks

If you READ my 6.1 retro fit thread..or ANY of the stickied threads...you'll get most of the answers you need.

But to shuffle things along - Your stall converter will be determined by what torque your motor makes and as such whatever cam you run, and whatever gears you run...

There's nothing hugely different in the bore/stroke of a G3 to make them behave much different to most old school small blocks...except they are much more efficient due to cam type, EFI and head design.


The Gen 3 will only bolt up to a small block 727.. Or a stick shift with mods.

Flex plate - Mopar Performance make the conversion flex plate and bolts. Some other suppliers claim you need a shim between the bell housing and block flange as well - but plenty of guys haven't used this. I'm going to find out in the next few weeks if its a problem.

MSD-6 - I have wired up my MSD 6.

Basically you remove the whole of the engine bay ignition circuit - dist, dist wires, ecu, ecu harness, ballast and re-route the ballast wiring to close the circuit.

You can retain the external regulator and the alternator harness.

Then you start from scratch...you only need a switched 12V and a good ground to run the MSD-6 ECU.

A MSD tach converter is you want to run your factory tach.

Aftermarket tachs will usually run straight off the MSD-6.

All other wiring to sensors etc is included in the MSD harness.

One question - If you are running the MSD-6...are you going with carb induction?

If not..you need a controller for the EFI as well as the MSD-6 for spark.