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

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

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

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

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

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/

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

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

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

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.

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

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?

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

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

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

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

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

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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

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

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

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

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

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

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.

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

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.

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

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

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

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. :chevy:

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

Thanks for input and photos Grumpy!

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

Looks very familiar.

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

Thanks for everyone's input and ideas!! Jay