Anyone Transplant a 340 into Their 68-70 Runner/Charger?

[Moparfiend]

Published shipping weights are utter fantasyland. Most small block a body's weigh around 3400, big block b body's around 3800 up. A small block won't be more than 150 lighter. My best friends 70 340 challenger weighs 3600 plus, my manual brakes, manual steering, no air , bench seat 69 runner weighed almost exactly 3700 , stone stock on a racetrack certified scale. (Big block, 727).
Most people who read shipping weights, then weigh their car are seriously disappointed.

My point exactly 33 IMP if you compared an A-body to a small block B-body its not a huge difference so putting a hot 340 in a B-body is not a big deal weight wise. Remember the original question here was would it be difficult and worth it. And I say for me hell yeah. I had a 318 with a 904. So it dropped right in. I am not saying its gonna run 10’s but it is gonna be fun! It is gonna sound great and it is gonna be cool!

 

[68Moparmaniac]

I always go by the old saying "No replacement for displacement" because it's true! Just ask your girlfriend....LOL

 

[Moparfiend]

For some reason I can’t stop watching that *** shaking......

 

[33 IMP]

My point exactly 33 IMP if you compared an A-body to a small block B-body its not a huge difference so putting a hot 340 in a B-body is not a big deal weight wise. Remember the original question here was would it be difficult and worth it. And I say for me hell yeah. I had a 318 with a 904. So it dropped right in. I am not saying its gonna run 10’s but it is gonna be fun! It is gonna sound great and it is gonna be cool!

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If you are happy, GREAT!
My point was that both a' s and b's are heavier than some think, and torque moves heavy. I think there is usually 350-400 lbs difference between an a or a b.
Engine masters a few years ago did a rivalry match between a Chevy 383 and a identically prepared 383 mopar (think of the Chevy as a stroked 340 with really good heads). Horsepower was a wash, but the big block killed the Chevy in mid range torque, and midrange torque is what makes a pleasant responsive street car.

 

[mr. b]

I always go big block but that's just me also my 69 road runner weighted 3450 when I had it weighted with a half tank of gas

 

[Moparfiend]

My last restoration was a 496 stuffed into a 71 Vette. I am happy to have roon in the engine bay lol.