Motor perches need help

[revjames]

Hello I have a 1963 frame and I am currently trying to put my 94 LT1 in. It is not lining up right at all. I don't know if my perches are even correct. 1. Are the ones on the photo for a 350 2. If not what do the 350 perches look like. Thank you so very much. The photo attached is of the perches

[PGSigns]

What motor mounts are on the motor and what trans are you going with? When you do a swap to an automatic the cross member needs to be cut out and a rear trans cross member installed. I keeping the factory cast bell housing and running a 4 speed it will bolt in with what you have.
Jimmy

[padresag]

that is my picture and that is a 65 suburban. those are the stock perches and they will take a 350 with the earlier mounting. motor mounting changed and I do not know the exact year. that cross member with the red arrow is for the early cast iron b/housing to mount on. if you see going to run an a/trans you are pretty well going to have to remove that cross member and go to a rear trans mounting and a cross member to go with it.
I believe the early mount(insulator) will bolt onto the lt1 and then onto that perch. if you want to run the lti mounting then you will have to use the laater type perches that are compatible with the lt1 mount which has the single bolt that runs parallel with the side of the block
ron

[revjames]

Thanks yes I already removed the teams mount and bought a new one for the 4l60e tranny. So I need to buy new "different" perches

[padresag]

Originally Posted by PGSigns

What motor mounts are on the motor and what trans are you going with? When you do a swap to an automatic the cross member needs to be cut out and a rear trans cross member installed. I keeping the factory cast bell housing and running a 4 speed it will bolt in with what you have.
Jimmy

with the lt1 eng you use a different flywheel(re the 1 piece rear seal) and when you bolt the cast iron b/housing can you use the lt1 starter?
ron

[padresag]

Originally Posted by PGSigns

What motor mounts are on the motor and what trans are you going with? When you do a swap to an automatic the cross member needs to be cut out and a rear trans cross member installed. I keeping the factory cast bell housing and running a 4 speed it will bolt in with what you have.
Jimmy

you can put an a/trans in and leave the cross member in. the one in the picture did have a 350 trans in it when I got it. there are people that can and will do things because they are ignorant. that is why the floor is cut up and it was put in with the engine attached and somehow put in. I think that I mentioned a few names when I pulled it apart. things may go in but they migth not be right.
ron

[revjames]

Here are my poor pics

[revjames]

Motor

[revjames]

The other side which doesn't fit.

[PGSigns]

Did this truck have a 292 in it?
Jimmy

[revjames]

I don't know I bought the frame without the engine which is why I'm a little lost

[padresag]

Originally Posted by revjames

I don't know I bought the frame without the engine which is why I'm a little lost

do both of your perches look like the one in the picture or is the one on the passenger side shorter? if it is shorter it will also be mounted a little further forward than the one on the other side
ron

[revjames]

They are both the same size so I don't know if they are correct or suppose to be different.

[Trsmotrhed]

My LT1 bolted to my perches that I had for the 350. I modified mine to raise the motor. I don't have any pics of the original ones. Sorry about that.

[PGSigns]

It looks like the engine is sitting low on the passenger side. But the engine looks like it has the wrong mounts on it for these trucks. I think if you put the early model mounts on it it will sit down like it should.
Jimmy

[padresag]

Originally Posted by revjames

They are both the same size so I don't know if they are correct or suppose to be different.

then they are for the 230/250 i6 and the sbc
ron

[jayoldschool]

The passenger side mount (the one bolted to the block) on an LT1 is different than a Gen 1 SBC. It's sort of upside down/backwards. This was done to clear the low mount AC compressor location on the F/B/D body cars.

I have LT1 mounts in my garage, LMK if you need pics. A couple of LT1s, too.

[Trsmotrhed]

I had to use the mounts off my old 350. There's one bracket you need to grind a little to make the old mounts fit. Did you swap those out?

[revjames]

Originally Posted by jayoldschool

The passenger side mount (the one bolted to the block) on an LT1 is different than a Gen 1 SBC. It's sort of upside down/backwards. This was done to clear the low mount AC compressor location on the F/B/D body cars.

I have LT1 mounts in my garage, LMK if you need pics. A couple of LT1s, too.

I would love pics when you get time

[Captainfab]

It looks to me like you simply need to rotate the engine? The drivers side is sitting high and the passenger side is low. I was not aware off any engine mount location change on the LT1/LT4. But then gain I have not owned one either.

[Trsmotrhed]

I used the stock mounts from the old 350. The LT1 on the passenger side mounts toward the back of the engine, at least in mine it did. I removed it, modified the bracket for the alternator and used the old 350 mounts.