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318/340 swap question or two..........

Posted By: fireeng

318/340 swap question or two.......... - 01/11/12 08:44 PM

I am swapping a 318/904 to a 340/727. I should say I'm paying to have this swap done. The 340 and 727 were together at one time, but they were dressed down and striped when I got them.

I'm trying to find out if the crossmember from the 904 will mount the 727 or do I need to locate one? If so, where is the place to buy?

Are the Brackets from the 318 for the alternator and power stering pump the same?

Will the power streering pump from the 318 work on the 340?

Is there a source to get motor mounts for the 340?

I have a floor shift, with the linkage from the 904 hook up to the 727 or is that different?

Any help, would be sweet...............Thx Scott

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Posted By: JohnRR

Re: 318/340 swap question or two.......... - 01/11/12 09:12 PM

Quote:

I am swapping a 318/904 to a 340/727. I should say I'm paying to have this swap done. The 340 and 727 were together at one time, but they were dressed down and striped when I got them.

I'm trying to find out if the crossmember from the 904 will mount the 727 or do I need to locate one? If so, where is the place to buy? yes the same

Are the Brackets from the 318 for the alternator and power stering pump the same? yes the same

Will the power streering pump from the 318 work on the 340? yes

Is there a source to get motor mounts for the 340? yes, the drivers engine bracket is different and available , everything else is the same

I have a floor shift, with the linkage from the 904 hook up to the 727 or is that different? Mostly all the same , the bracket to the trans tail may be different and also the shape of the linkage rod to the shifter lever on the trans .

Any help, would be sweet...............Thx Scott


Posted By: fireeng

Re: 318/340 swap question or two.......... - 01/11/12 09:26 PM

That just about covers that..... thanks JohnRR

more to follow....
Posted By: fireeng

Re: 318/340 swap question or two.......... - 01/12/12 01:29 PM

How but the fuel pump?
Posted By: JohnRR

Re: 318/340 swap question or two.......... - 01/12/12 03:39 PM

The fuel pump will interchange, but depending on it's age and type you may want to upgrade that.

Aside from the engine mount bracket difference on the drivers side, externally the 340 is the same as a 318, if it bolts to the 318 it will bolt to the 340.
Posted By: gtx6970

Re: 318/340 swap question or two.......... - 01/12/12 03:52 PM

I'm trying to find out if the crossmember from the 904 will mount the 727 YES

Are the Brackets from the 318 for the alternator and power stering pump the same? YES

Will the power streering pump from the 318 work on the 340? YES

Is there a source to get motor mounts for the 340? Used only as far as I know, but all you need is the drivers side engine bracket

I have a floor shift, with the linkage from the 904 hook up to the 727 YES
Posted By: can.al

Re: 318/340 swap question or two.......... - 01/12/12 08:21 PM

..not sure but i think a 3/8" spacer will let you use the 318 driver side mount..
schumacker probably have a replacement
Posted By: Ron69rr

Re: 318/340 swap question or two.......... - 01/12/12 08:21 PM

Do you have to reverse the cross member as the lengths of the 904 and 727 were different iirc. I do know that the 3 and 4 speeds are different and require a different cross member.
Posted By: Daty Rogers

Re: 318/340 swap question or two.......... - 01/12/12 08:27 PM

Quote:

Do you have to reverse the cross member as the lengths of the 904 and 727 were different iirc. I do know that the 3 and 4 speeds are different and require a different cross member.




No, mount pointis the same.

-Daty
Posted By: JohnRR

Re: 318/340 swap question or two.......... - 01/12/12 11:29 PM

Quote:

Quote:

Do you have to reverse the cross member as the lengths of the 904 and 727 were different iirc. I do know that the 3 and 4 speeds are different and require a different cross member.




No, mount pointis the same.

-Daty




What he said . He will need a shorter driveshaft if that wasn't already mentioned .
Posted By: Joesixpack

Re: 318/340 swap question or two.......... - 01/13/12 12:18 AM

mounts are avail on moparts.com small block engine parts for sale section.

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