Differences in bell-cranks between trucks with 6 cyl and 8 cyl engines??

[Clatterville trolley]

I have a person wanting to purchase a frame to engine bell-crank for a 427 v-8 with 4 speed transmission he is installing in a 67-68 C10. Anyone know what this part should look like?? I have a couple or three, but not sure what they fit.
Any help / pictures would be appreciated! Jay

[LockDoc]

Originally Posted by Clatterville trolley

I have a person wanting to purchase a frame to engine bell-crank for a 427 v-8 with 4 speed transmission he is installing in a 67-68 C10. Anyone know what this part should look like?? I have a couple or three, but not sure what they fit.
Any help / pictures would be appreciated! Jay

I'm going to follow along on this one. I have a lot of different styles but I don't know what they fit either..... Post up some pictures if you can.

Bump for you.

LockDoc

[gmc684x4]

I am going to say same one as a small block bell crank

The strait 6 ones are different i dont rember fully in what way been a long time since i had a 6 banger

https://www.brotherstrucks.com/67-72...tinfo/BLC6772/

[gmc684x4]

Here is a couple of pics from the V8 one from my 72

You can measure the distance from the frame rail mount to the engine block as a double check
that you can drop a big block and a small block on the same frame perches tells be it will fit

All 67 72 K series trucks use the back mount position it is only in the C models that they move the engine front or back depending on 6 or 8 cylinder

When I start putting my C10 together I will keep the motor back make room for the long water pump and serpentine belt setup
When I talked to My Late cousin before he passed last month about his 69 with a 396 he kept the motor in the back position as well for better header room

[Ironhorse]

No authority by any means but I thought the BBC bell cranks or Z-bars were different than the SBC which is different from the IL6.

[Clatterville trolley]

Originally Posted by gmc684x4

Here is a couple of pics from the V8 one from my 72

Thanks for the input and photos with measurements!! If I remember correctly the pivot that bolts to the engine that this crank swings on for 6 cylinder is much taller? / longer than the one that a small block uses. But just can't remember on crank differences.
Also thought maybe because he was using a 427 that the crank would be entirely different or not?

[geezer#99]

You should be able to find one here.
At least an idea what you need.
They might even have an answer for you.

https://www.4speedconversions.com/se...?keyword=Z+bar

[Clatterville trolley]

Originally Posted by geezer#99

You should be able to find one here.
At least an idea what you need.
They might even have an answer for you.

https://www.4speedconversions.com/se...?keyword=Z+bar

Thanks for the link - scanned over it quickly and looks like lots of info, will read more in depth tomorrow! Jay

[LockDoc]

-
I can measure the one in my Green '67 in the morning, it has a 250 I6, and the '72 Dually, it has a 350 with the SM465 linkage in it. I will take pictures of the other ones I have for reference also.

LockDoc

['68OrangeSunshine]

L6 Z-Bars have to be longer. The L6 block is skinnier than the V8.

[Clatterville trolley]

Originally Posted by '68OrangeSunshine

L6 Z-Bars have to be longer. The L6 block is skinnier than the V8.

Isn't the pivot point that bolts to the block longer too on L6 to help make up the distance? Jay

['68OrangeSunshine]

Originally Posted by Clatterville trolley

Isn't the pivot point that bolts to the block longer too on L6 to help make up the distance? Jay

Yes. On my V8 truck, a '71 GMC Jimmy 4x4, w/350 SBC, the ball-stud engine-side pivot threads directly into the side of the block.
On my L6 truck --'68 C/10 Stepside, w/292, there's a ''U'' bracket that extends 4'' and then the ball stud pivot extends from there.

[geezer#99]

Six banger had a bracket similar to this to make up the distance.
Truck one was slightly different.

https://www.ebay.com/i/153926914679?chn=ps

V8 had a pivot ball that screwed into a threaded hole in the block.

[Clatterville trolley]

Originally Posted by geezer#99

Six banger had a bracket similar to this to make up the distance.
Truck one was slightly different.

https://www.ebay.com/i/153926914679?chn=ps

V8 had a pivot ball that screwed into a threaded hole in the block.

Bracket shown in the above ebay ad is what I was thinking about for L6 exactly.

[Grumpy old man]

Here are a few 6/small block the 4th one down is for a small block IIRC and alignment of pivot plate on small block.

[Clatterville trolley]

Originally Posted by Grumpy old man

Here are a few 6/small block the 4th one down is for a small block IIRC and alignment of pivot plate on small block.

Thanks for input and photos Grumpy!

['68OrangeSunshine]

Originally Posted by Clatterville trolley

Bracket shown in the above ebay ad is what I was thinking about for L6 exactly.

Looks very familiar.

[Clatterville trolley]

Thanks for everyone's input and ideas!! Jay