318 /340 - Converter / stallspeed..???

[cowboy]

-
Will there be a large difference in stallspeed on a 318 / 904 and a 340 / 727...

I got a 340, but with the 904 tranny from the original 318 engine,  - I can't smoke tires, need a lot of rpm's on the 340 before it performes, but the stall is so low the car gets going like a ferry.. 

[tactransman]

The 318 converter is a lower stall than the 340 wants for sure. You need to go aftermarket on the converter,especially if the 340 is "pumped up" more than a stock one.

[cowboy]

-
The 340 is a little "pumped up"  headders and -   not sure about the cam..

What stall will a stock 340 have..

[tactransman]

Around 2200,your 318 one is probably around 1800.

[cowboy]

-
Do I invest in a stall conv. for the 904, - or do I do better getting a 727 .. 

[tactransman]

Do you have a 727? If so,then yes,go with the 727 and a stall.Make sure your 340 is tuned to it's best also because a 340 with a 318 converter should be pretty peppy yet. Is the engine idle real "lopey/rumpity"?

[cowboy]

-
I have been thinking of getting a 727, - for a couple of years, - but has waited, cours my mind is on a bigblock - kind of a bigblock guy..   

The 340 is a little jumpy in idlle, but not a lot, - almost stock I think, exept for the headders and doublepumper carb..

[tactransman]

I would say that the 340 needs some tuning and then it might run more to your liking with the 904/converter you have. I am assuming that it is a '71 and earlier 340 (Steel crank)