340 0r 440
 

Having 71 barracuda redone. Has 1970 340 but also have 1966 440 to use
Car is slap stick auto which I"ll keep. My other 71 is a 4 speed

440

71 Barracuda's
 

Yeah I'm starting to lean that way but I'm going to hang onto the 340 though. My other is a 440 6-pack 4-speed.

I would hang onto the 340 also, The 440 will always get a bigger wow factor when you open the hood.

71 -

Same story. Depends on what you want to do with the car.

For car shows (wow factor) and 1/4 mile runs (no replacement for displacement), the 440 is the way to go. For general driving and street/strip fun, the 440 is a lot heavier than the 340 and that takes a toll in handling, and most of the time just isn't necessary, especially since the 340 can be quite a potent power plant.

Archer

340 0r 440
 

440

Twin turbo stroker 340.

Archer has the answer 440

Can't help on the street version but on the track... A strong built naturally aspirated 340 bored and stroked to 410" with the proper heads and cam will run as fast as the same built 440.... Weight is the difference... My 340 Duster has ran as quick and fast as my Barracuda with the BB.... But the choice is yours.... As we hear a lot in racing... " How fast can you afford to go??" How much WOW do you want and can afford???? Up to you...

To throw another wrench in there a 360 stroked out to a 426 is a good bang for the buck also.

If you have the means to do the BB swap, I say go for it. I'm a huge fan of the MOPAR SB, but a 440 is just hard to argue with.

Ill buy your 71 440 6pack 4 speed, p.m. me if you want some extra money. :D

440

do a 500 in stroker !

Well, here's my .02 worth: Since you have two '71s (must be nice!) I would stay with the 340, I have a '73 that I pulled the 318 and dropped in a 440,what a P.I.T.A. I wished I'd stayed with the small block! Yes, the car is fast,but once in awhile a small block will kick my butt at the track. the 440 with stock heads is way heavy, and even though running a 295/55 drag radial with a locker rear end,battery in the trunk,I still spin coming off the line.

440 4 speed nott for sale
 

https://moparforums.com/forums/attac...102412-148.jpg

Nope the blue one is not for sale. It has over 400 HP
I think the green Cuda will do well with a 440 and a slap stick auto. It will be awesome to cruise side by side down the street.
https://moparforums.com/forums/attac...102412-115.jpg