Mating a 904 transmission to a 360

[Charger72]

Hello All, need some help; I'm wanting to install the engine and transmission together. Previous setup was a 318 & 904 transmission, now I have a 360 &904.

Not sure how the 360 & 904 mount. I have all the hardware, should I have the flex plate attached to the trans as shown? Also what I have the 6 bolts attached to the engine, not sure what they are supposed to be holding.

Since I went from a 318 to a 360 is the attachment different? Maybe some pictures might help me, the FSM doesn't really help. Thanks.

 

[Cranky]

You have to install the flex plate on the crank first and if your 360 isn't neutral balanced, you can't use that flex plate. The teen had a neutral balance (internal balance) and the 360 is external balance.

 

[Charger72]

Thanks Cranky, my engine builder had previously told me "It's balanced internally requiring no weight on the flex plate".

 

[Cranky]

Thanks Cranky, my engine builder had previously told me "It's balanced internally requiring no weight on the flex plate".

Should be good to go.....just make sure you have clean dry threads and use Loc-tite on all of the flex plate fasteners. Another thing, mark the plate and converter with something so you can get it to align with the torque converter more easily once you go to install the trans on the block. I also like to index the converter as close as possible to the mark on the plate....

 

[Charger72]

Thanks a lot for the helpful information, I'll go ahead and get started on it.

 

[MoparLeo]

Use new flex plate/converer bolts and torque them to specs. Cheap insurance.

 

[Charger72]

Thanks MoparLeo.

 

[Cranky]

Use new flex plate/converer bolts and torque them to specs. Cheap insurance.

I can understand that but where are the new ones made? Maybe look at one that's SFI approved.......

 

[bm73charger]

I'm putting a stroker kit into a 360. so it will be internally balanced (i think) I'm also installing that into a previous 318 to 904. Any idea what type of converter/ flex plate id need?

 

[RemCharger]

I'm putting a stroker kit into a 360. so it will be internally balanced (i think) I'm also installing that into a previous 318 to 904. Any idea what type of converter/ flex plate id need?

You can just continue to use the converter and flex plate you have

 

[Kern Dog]

You have to install the flex plate on the crank first and if your 360 isn't neutral balanced, you can't use that flex plate. The teen had a neutral balance (internal balance) and the 360 is external balance.

I'm putting a stroker kit into a 360. so it will be internally balanced (i think) I'm also installing that into a previous 318 to 904. Any idea what type of converter/ flex plate id need?

I don't think that this is right.
The LA series engines used the same flex plate for the 318 as the 360 from everything that I have seen and dealt with, The balance factor is done either internally or through the harmonic balancer and a weight added to the converter. I don't see how that affects the flex plate.
In short, I have used 904s behind every 360 that I have installed in project cars and always used a flex plate that came from a 318.
I don't know how a stock stroke 360 with a cast crank can be balanced internally. Can they actually drill counterweights and stuff in Mallory metal to where it would stay? Would they tack weld it in place?