64 Valiant low compression 273 + tranny

[Silent Thunder]

I have the 273 low compression engine in my 64 Valiant with push button automatic tranny. If I want to have a little more power and decide to go with a 340 will that bolt up to my tranny and can it take the extra power (assuming the tranny is good to begin with)? I feel the car has no get up and go. Has an 8.25 rear end and possi but it can't even spin the standard tires. Thoughts?

 

[1970Duster]

You'll need to have the tranny rebuild and beefed up to handle the power. That said, you'll get more out of a 360 (and be cheaper) then a 340. Try to find a late 80's early 90's 360 LA roller block (can be found in full size pickups) as your building core/block. I would have used that had I known of them and hadn't picked up my 340 block for dirt.

 

[pishta]

Get the convertor bushing from Tflite paddy, the 340 crank is bigger in the convertor snout receiver than the 273 crank.