73 model 340 or 440 for my 73 Cuda???

[torredcuda]

For the 440 you will also need a big block tranny and all the pulleys and brackets for it.I love my built 340 4 spd combo but have never driven anything bigger than my 383 road runner so the power of a 440 might really impress me.The big block will defintely impress the car show crowd more as the first question an onlooker will ask is if it`s got a hemi or 440,either that or they will say it`s the General Lee b/c my car is orange 

[70RTdroptop]

I'd  go with the 440 -makes lots of brute power, plus looks pretty good sitting in the engine bay.

[moparnut]

I would put in the 340 built to the hilt,I agree with your first statement about the car never came with a BB,but thats just me.I usually pull numbers drivetrain and bag them for future and while i could put anything in their place,i go with the same displacement the car came with,(but i would use a 340 in place of a 318)call me different but i like the vin to match the drivetrain,but i dont like anything fake.My 2 cents worth,call me Old School too,lol

[Follicly Challenged]

Just my opinion. While in the past, I would have immediately been in the "BB the thing" camp, not so today.

To explain, "these days", depending on "how much" power you want, it is more than viable to consider building a small block stroker package engine, especially if the car is originally a SB car.
HP and Torque numbers in the mid 400's are easily attainable, reliable, and relatively cheap on the Small Block, when adding in the extra expenses of the BB conversion, as opposed to the simplistic "re-install" of the SB engine, assuming you already have all the small block pieces on hand.

I still respect the Big Blocks, but when comparing to a "stroked mouse", in the mid 400's HP/TQ, given total costs, and the handling characteristics of the final product, I building far more small blocks these days, just seems to make more sense for the "streeters".

Really sad part, is that the SB based strokers are "running circles" around many BB cars, sad but true !

[Johnny Cuda]

Size doesn't matter! 

 

[Carlwalski]

Really sad part, is that the SB based strokers are "running circles" around many BB cars, sad but true !

I doubt it.....winning a few maybe. There is no replacement for displacement.
The Big blocks will usually drive around them at the end of the 1/4 with those extra cubes.

Or maybe your talking about SB beating stock BB's? 
Big blocks have to only sneeze to make over 500hp at the fly, small blocks have to push weights for years......

As for handling....these are E-Bodies...handling sucks no matter what.

Give Chryco a 440 and 340 and see which one makes better hp/t for the same amount of money. 

[71383bee]

If it were me I would build the 340.  It is a direct swap with the 904 tranny and really the rear end will be the only major thing to change which should be done regardless.

I do love BB's, but I love the ease of a SB car and a 340 will be a direct swap that will probably even handle the radiator. 

That is unless this is a pure street killer or track car then i would vote for the BB. 

[Follicly Challenged]

I doubt it.....winning a few maybe. There is no replacement for displacement.
The Big blocks will usually drive around them at the end of the 1/4 with those extra cubes.

Or maybe your talking about SB beating stock BB's? 
Big blocks have to only sneeze to make over 500hp at the fly, small blocks have to push weights for years......

As for handling....these are E-Bodies...handling sucks no matter what.

Give Chryco a 440 and 340 and see which one makes better hp/t for the same amount of money. 

Hey NZ440R/T

You missed my point, When TOTAL costs of conversion for the BB are considered, the SB stroker is more than a viable option for the street guys when they already have a Small Block car, at "streeter" power levels.

Winning is winning PERIOD !

450 hp is 450 hp PERIOD ! ,from whatever engine.

Obviously easier to do with the larger engine.

I really don't care who can do "what" to "whatever engine", anybody, can make more power with the larger engine, no slag Intended to Chryco, but TOTAL costs and time are just that, and always worthy of consideration.

I still routinely build 700-900 hp Competitve Drag Racing Engines for my customers, and own a machine shop, and have emailed many Dyno sheets to members on this board for fun & continuity.

 I could "spit out" a 500 hp 440, or 451 stroker in a matter of days, no problem !

We're all entitled to our opinions, mine is to build myself a nice little stoker to compliment my E body for street driving, thats it , thats all.

[Carlwalski]

Hey NZ440R/T

You missed my point, When TOTAL costs of conversion for the BB are considered, the SB stroker is more than a viable option for the street guys when they already have a Small Block car, at "streeter" power levels.

Winning is winning PERIOD !

450 hp is 450 hp PERIOD ! ,from whatever engine.

Obviously easier to do with the larger engine.

I really don't care who can do "what" to "whatever engine", anybody, can make more power with the larger engine, no slag Intended to Chryco, but TOTAL costs and time are just that, and always worthy of consideration.

I still routinely build 700-900 hp Competitve Drag Racing Engines for my customers, and own a machine shop, and have emailed many Dyno sheets to members on this board for fun & continuity.

 I could "spit out" a 500 hp 440, or 451 stroker in a matter of days, no problem !

We're all entitled to our opinions, mine is to build myself a nice little stoker to compliment my E body for street driving, thats it , thats all.

OK...OK....take it easy...you win. 

[Carlwalski]

Follicly Challenged,

Just re-read my post that you replied to...sorry mate it does look a little "blunt".
I didn't intend for it to come off that way at all, so sorry if it looked like I was throwing off at you, wasn't the case.

You must build good engines and by the sounds of it plenty of them. I was basically meaning a stock 340 and stock 440 the 440 will of course make more hp using the same money as it's got extra ponies to begin with, that's all. 


Cheers and I hope no hard feelings.
 

[MyMopar]

If you have to buy either engine and IF you ARE going to rebuild them, I would go with the SB route.  Build it for power and use as much aluminum parts as you can.  The difference in weight will gain you some power over a big block (not real power per say but power in time if that makes sense).  You can have a really nice SB built up that is very streetable.
If you are just going to buy a ready made/running engine w/no intentions on doing any more work, go with a BB, assuming both engines are stock or relatively close.
I am dropping a 440 in place of my 318 only because 1. I have a 440 w/trans sitting around and 2. The 318 would need a complete rebuild and I would rather put money into a 340.  So in the end, buying a set of motor mounts $150, .960 torsion bars $110 and having the driveshaft shorten would be cheaper than finding a 340 and building it up.  All other parts (headers, exhaust etc.. I would have to buy for either engine so it doesn't count).

[BB73Challenger]

Big Block all the way!!

No replacement for displacement