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09-12-2020, 09:21 PM | #1 |
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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
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09-12-2020, 10:14 PM | #2 | |
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Re: Differences in bell-cranks between trucks with 6 cyl and 8 cyl engines??
Quote:
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
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09-12-2020, 10:39 PM | #3 |
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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/ |
09-12-2020, 10:52 PM | #4 |
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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 Last edited by gmc684x4; 09-12-2020 at 11:00 PM. |
09-12-2020, 11:01 PM | #5 |
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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.
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09-12-2020, 11:01 PM | #6 |
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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?
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09-12-2020, 11:09 PM | #7 |
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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 |
09-12-2020, 11:29 PM | #8 | |
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Re: Differences in bell-cranks between trucks with 6 cyl and 8 cyl engines??
Quote:
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09-12-2020, 11:54 PM | #9 |
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Re: Differences in bell-cranks between trucks with 6 cyl and 8 cyl engines??
-
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
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09-13-2020, 02:40 AM | #10 |
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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.
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09-13-2020, 03:49 PM | #11 |
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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
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09-13-2020, 03:57 PM | #12 |
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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. |
09-13-2020, 04:01 PM | #13 | |
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Re: Differences in bell-cranks between trucks with 6 cyl and 8 cyl engines??
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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.
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09-13-2020, 04:51 PM | #14 | |
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Re: Differences in bell-cranks between trucks with 6 cyl and 8 cyl engines??
Quote:
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09-13-2020, 05:01 PM | #15 |
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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.
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09-13-2020, 05:03 PM | #16 |
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Re: Differences in bell-cranks between trucks with 6 cyl and 8 cyl engines??
Thanks for input and photos Grumpy!
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09-13-2020, 07:24 PM | #17 |
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Re: Differences in bell-cranks between trucks with 6 cyl and 8 cyl engines??
Looks very familiar.
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09-16-2020, 07:49 PM | #18 |
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Re: Differences in bell-cranks between trucks with 6 cyl and 8 cyl engines??
Thanks for everyone's input and ideas!! Jay
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