swapping a 318 for a 360

[ef8340]

i'll be getting a 360 soon thats in a mid 80's ramcharger and im planning on putting it in my 70 dart i need to know what all i need to change so far this is what i have , 360 car oil pan i'll be using the 318's oil pick up tube,318,340 motor mounts, 340 exhaust manifolds,the trans is a 904 do i need a different convertor? or flex plate? or should i see about getting the 727 trans from it aswell but i'd really like to keep the 904 im wanting to be able to do this swap on a weekend as this is my daily driver/work car
thanks
Terry

 

[rumblefish360]

the trans is a 904 do i need a different convertor? or flex plate?

Use the converter and flex plate from the Ramcharger's 360 on the 904.

318,340 motor mounts
Terry

318 and 340 engine mounts are different from each other. The 273, 318's are the same, the 340, 360's are the same. IF you have 318 mounts to use n the 360, you'll need some sort of spacer to take up the extra room. A small stack of washers or a tube cut to size will do the trick.

 

[nothingbutdarts]

Use the converter and flex plate from the Ramcharger's 360 on the 904.


I agree! This is because the 318 is internally balanced and the 360 is an externally balanced engine that used a special weighted torque converter to help balance the 360

 

[grumpuscreature]

If you find out the 727 converter won't work with your 904, you can get a flex plate from B&M that has the balance weights for a 360 and will allow you to use your 318 converter.

 

[cudamark]

You have 3 choices on the convertor.....a 904 type for the 360, the weight kit from Mopar Performance, or the 360 weighted flex plate. I prefer the later. It makes it easier down the road on engine balances and convertor choices. The other parts you have should work fine. If you're going to sway between 2bbl. and 4bbl, you'll need kickdown linkage and air cleaner parts. You'll probably have to redo the exhaust system also. Oh, I just remembered something else....If you're using a windage tray, the 360 is different than all the other small blocks so round one up before the pan swap.
Thanks, Mark

 

[ef8340]

thanks guys
Terry

 

[dartguy340]

Use the converter and flex plate from the Ramcharger's 360 on the 904.



318 and 340 engine mounts are different from each other. The 273, 318's are the same, the 340, 360's are the same. IF you have 318 mounts to use n the 360, you'll need some sort of spacer to take up the extra room. A small stack of washers or a tube cut to size will do the trick.

Only the driver's side motor mount bracket needs the washers....