K-Member Question 66 Belvedere

[BB BELLA]

Don't worry, the K-Member isn't the issue here. All V8 K-members from '66 to '70 are identical, doesn't matter if it was a 273 or a 440.

it would make a difference if his 273 was installed onto a slant k member with shumaker mounts is why i asked if the motor was original!

 

[Dave6T4]

The difference is the improved idler arm mount, introduced in 1968. Other than that, they are functionally the same.

 

[BLK 68 R/T]

I heard that as well, but where are the differences?

The sway bar mounting is different in 1970 and later. Hemi uses its own unique design for the motor mounts.

 

[Dave6T4]

The sway bar mounting is different in 1970 and later. Hemi uses its own unique design for the motor mounts.

Early '66 also had different sway bar mounting. But we are getting away from the fact that the V-8 crossmember will accommodate anything from 273 to 440, with exception of 426 Hemi which had its own distinct crossmember.

 

[BLK 68 R/T]

Early '66 also had different sway bar mounting. But we are getting away from the fact that the V-8 crossmember will accommodate anything from 273 to 440, with exception of 426 Hemi which had its own distinct crossmember.

Strictly speaking from a motor exchange standpoint, yes. But just buying some random k member and bolting your engine in may be all fine and dandy until you go to install everything else. So it’s important to know what you need and what you are getting. Blanket statements (not by you) that say all 66-70 b body k members are identical is leading people astray.

 

[Diewilde13]

To clear things up here, i need to mount the bracket from the front side of the block. Dont know why, but thats the way the engine is in now and sits correct in the bay

 

[Diewilde13]

Here you see. On this way it fits.

 

[RemCharger]

Well, that's not the way it works. Something must be fighting you with the other 2 drivetrain mounts. Assuming it's bolted to the trans.
I would disconnect the left and rear mounts, and see if the right side will go together properly

 

[mattsmopars]

I would think either the mounts are made wrong or you have the left bracket on the rt side and the rt side on the left setting the engine back. I saw you mentioned originally you had a 904 trans that will also need to be changed out to a 727 for a BB application and will require a different driveshaft.

 

[Diewilde13]

Iknow its not correct, but it works.
I have the Tranny Crossmember reworked. Not fuzzy, you just need to remove some metal. And sure i have the Driveshaft.
Its not my first conversion. Did it several times but mostly in A-Bodys. I measured the brackets from my buddys 68 Roadrunner with all original 383 setup.
The Brackets i have are similar to them. So i don´t know if the Car had a crash somewhen or what ever.
For now i let it as it is.
And btw its a 833 Tranny.

 

[mattsmopars]

So if you have an A833 trans and its a 66-69 unit you need a 4 speed crossmember that is different from the automatic. the 4 speed cross member mounts the rubber in the middle of the crossmember. getting all these components correct will only help you down the road when it comes time to install your Z bar and clutch linkage. just my 2 cents.
Matt

 

[Diewilde13]

What i sayd, Crossmember is reworked and fits nice. Did several times.
Clutch will be controlled by hydraulic cylinder, no Z-bar.

 

[Kern Dog]

All 66-70 V8 k members are the same. You need the correct big block brackets that bolts to the block.

The engine will sit to the right some.

Don't worry, the K-Member isn't the issue here. All V8 K-members from '66 to '70 are identical, doesn't matter if it was a 273 or a 440.

Actually they aren’t.

The difference is the improved idler arm mount, introduced in 1968. Other than that, they are functionally the same.

To recap, the 1966-70 B body V8 K members are NOT all identical. They may have similar mounting points for the engine but there are differences. As stated, the stud mounted idler is 1966-67 only, right? The 68-69 are similar. The 1970 unit is one year only due to the lower portion of the K member being shaped differently to allow the sway bar to pass through the K member rather than to be bolted outside of it.

 

[dvw]

To make it clear. 66-70 K frames have the same engine mount pads welded to them regardless if it was a small block or big block. Sway, bar idler arms can be different. Even 70-74 E body will bolt up and the engine location is the same. The E body steering box mounting flange is tilted slightly which move the steering shaft.
Doug

 

[BLK 68 R/T]

To make it clear. 66-70 K frames have the same engine mount pads welded to them regardless if it was a small block or big block. Sway, bar idler arms can be different. Even 70-74 E body will bolt up and the engine location is the same. The E body steering box mounting flange is tilted slightly which move the steering shaft.
Doug

Not all big blocks though. Hemi is different.