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Old 08-20-2016, 12:00 AM   #26
storm9c1
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Re: Converting to a 292

The 292 definitely has a different flexplate than all other L6s and SBC. As mentioned, it needs 3 dowels and larger bolts.

The good news is, depending on what trans you have, you should be able to get a parts-store replacement flexplate. Companies like Pioneer and ATP still make them. Just search for a flexplate for any 70s era truck with the 292.

Then again, what trans do you have? They were mostly mated up to a TH400, and are usually drilled for a 6-bolt converter. Will also work with a 3-bolt converter. But might need a custom drill for something else.
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Old 08-20-2016, 12:15 AM   #27
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Re: Converting to a 292

Take a look at aussiespeed. Neat stuff.
Don't know much about these L6's yet but I think a 250 can be made to scream. My Cherokee 6 has taken serious abuse beatings which is why I'm starting to like the 6 more. Evidently ford 300 s and jaguars can be made to kill small locks too. Either way Leo santucci did some cool stuff.
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Old 08-20-2016, 12:42 AM   #28
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Re: Converting to a 292

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Originally Posted by '68OrangeSunshine View Post
OK. If you say so. I never messed with the smaller displacement L6s. I've used both the 3- and 2-groove HBs on my 292s. I only really need 1 groove for the alternator. My point was the 292 needs a bigger HB. Santucci mentions the 3-groove by part number.
Yep! I see which one your talking about. Not saying your wrong by any means...just mentioning what I have seen. Here is a picture of the stock balancer both my 292's came with.

https://www.summitracing.com/parts/r...make/chevrolet

And here is the behemoth. Never have seen these in 1/2 to 1 ton rigs. Maybe they were a special order?

https://www.summitracing.com/parts/p...make/chevrolet
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Old 08-20-2016, 06:40 AM   #29
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Re: Converting to a 292

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And here is the behemoth. Never have seen these in 1/2 to 1 ton rigs. Maybe they were a special order?
I currently have the behemoth on my 292. My original balancer spun the outer ring and that was all my local parts store could conjure up. Seems to work fine. Might be carrying a little extra rotating weight that I don't need.
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Old 08-20-2016, 06:42 AM   #30
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Re: Converting to a 292

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Originally Posted by storm9c1 View Post
The good news is, depending on what trans you have, you should be able to get a parts-store replacement flexplate. Companies like Pioneer and ATP still make them. Just search for a flexplate for any 70s era truck with the 292.
If the bolts were enlarged in '66 and more dowel pins added, wouldn't the '70s flex plate have a problem bolting up to his '63 292?
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Old 08-20-2016, 08:25 AM   #31
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Re: Converting to a 292

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Originally Posted by '68OrangeSunshine View Post
OK. If you say so. I never messed with the smaller displacement L6s. I've used both the 3- and 2-groove HBs on my 292s. I only really need 1 groove for the alternator. My point was the 292 needs a bigger HB. Santucci mentions the 3-groove by part number.
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I have a '68 C/10 Stepside with original 292. No V8-style plastic fan shroud, just the black steel "Finger Guard". I have Clifford headers and run an SM465 4-Speed. No clutch linkage issues.
The passengers' side motor mount is different on the C10 -20 -30. On the K/10-20 -30, you need a special diagonal crossmember. [Very rare].
I believe the 292's Flexplate and/or Flywheel is the same as the SBCs.

The '63 Model Year L6 292 has a 6-lobed counterweight crank made of forged steel. The ['63-'66] Crank Drive End has 6 holes bored 7/16''-20 and one dowel pin, like the 230/250s. '67 and later 292 cranks have six 1/2''-20 bolts and 3 dowel pins.
'67 and later cranks have 12 counterweight lobes and are considered better balanced. If you have a gifted, performance-oriented machinist, the Six lobe crank can be 'feathered' or shaved to minimize resistance and improve balance. But that's a racers' trick, probably not much help on the street.

Also some of the early 292s had an oil pan sump that's not as far back as the later 292s.
Some 292s from C/40 and bigger trucks had a wider inside diameter exhaust manifold. It has 3 studs unlike the 250/292 C/10 exhaust manifolds with 2 studs.

On the showroom floor, the new-for-'63 292s had Alpine Green paint. While 230/250s were Blue Flame Six blue. In 1967 all Chevy engines got the [formerly SBC] Chevy Engine Orange. A period correct '69 truck would have an orange engine. A period correct '63 engine would be Alpine Green. Your choice.

All 292s take a bigger, 3-groove Harmonic Balancer: GM p/n 10141202. The 230/250 HB is not recommended on the bigger L6.

If you don't have a copy yet, I recommend the "Chevy InLine Six-Cylinder Power Manual" by Leo Santucci.
Good Luck.
I really appreciate all the information you folks are providing me. As for the fan shroud, I just bought this truck out of CA. It was built there, stayed there all it's life, came with the original black plates. It has a 3 core radiator and the fan shroud, I thought maybe it came that way because of the heat out there. I met a guy yesterday with a 69 LWB C-10. He bought it in 1983 from the original owner to use and drive back and forth to work. It came from the factory with the 292 and the 4 speed with granny gear. About 15 years ago he restored it and switched it over to an automatic. He said he took the trans, column, and everything he needed from a 1980,s van with a V8 in it. The flywheel, tranny and everything bolted right up to the 292 with no problem. So it sounds like there's hope for me. I just found a 69-292 that was rebuilt about 8 years ago but never fired, he wants 1500.00 for it. Does that sound reasonable for a 292?
Thanks again guys, appreciate all the help. onn
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Old 08-20-2016, 08:36 AM   #32
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Re: Converting to a 292

I think my '67 C20 came from the factory with a fan shroud. At least it looks stock to me. Here's a pic of the engine compartment. The shroud is out now and I can take pictures of it if you need 'em.

Buying a rebuilt engine is a dicey proposition. Who knows what was really done to it and what parts were used? Unless it's someone I know well, I'd rather get a tired engine and have it rebuilt myself. That may cost more than $1500.00 though.
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Old 08-20-2016, 10:42 AM   #33
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Re: Converting to a 292

To rebuild a 292 stock is pretty cheap. You can still get crate 292's as well. I think they are under 2K. I've seen 292 rebuild kits for under $500. Cool thing is Summit Racing has everything you need to rebuild a 292.
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Old 08-20-2016, 11:56 AM   #34
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Re: Converting to a 292

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Originally Posted by Shaky View Post
I think my '67 C20 came from the factory with a fan shroud. At least it looks stock to me. Here's a pic of the engine compartment. The shroud is out now and I can take pictures of it if you need 'em.

Buying a rebuilt engine is a dicey proposition. Who knows what was really done to it and what parts were used? Unless it's someone I know well, I'd rather get a tired engine and have it rebuilt myself. That may cost more than $1500.00 though.
Just was going through the 5 pages of your build, I'm really jealous, it looks great. Donn
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Old 08-20-2016, 05:06 PM   #35
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Re: Converting to a 292

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Just was going through the 5 pages of your build, I'm really jealous, it looks great. Donn
Thanks. It's pretty pedestrian compared to some of the builds on this site, but the body is coming out really nice and I can't wait to putt around in it.

Currently pulling the engine on my '67 Riviera to put the headers on. The C20 will have to wait. Researching windshields since that's next.

The '66 link below has some good 250 build-up pictures in it to get you motivated...
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Old 08-22-2016, 12:36 AM   #36
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Re: Converting to a 292

According to one of the guys at Inliner's the 194-292 use the same flex plate as the small block chevy of that era. Some of the 292's use 1/2 bolts and some of the v8's were externally balanced such as the 400. Here is a link he provided.

http://www.speedwaymotors.com/Tech/s...flexplate.html
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Old 08-22-2016, 09:14 AM   #37
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Re: Converting to a 292

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Originally Posted by TJ's Chevy View Post
According to one of the guys at Inliner's the 194-292 use the same flew plate as the small block chevy of that era. Some of the 292's use 1/2 bolts and some of the v8's were externally balanced such as the 400. Here is a link he provided.

http://www.speedwaymotors.com/Tech/s...flexplate.html
This is how the guy switched his 292 from a standard to automatic using an old chevy van with a V8. Thanks for the link, Donn
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Old 06-01-2020, 09:29 AM   #38
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Re: Converting to a 292

Just happened to run across this old post from a few years back. Being in my late 70's, I'm not as fast as I used to be, but wanted to not only thank everyone for all the advise, but give an update as to how things are going.
I will try to post a few pictures also. The truck has been painted, so that slowed things up a little, but as it sits, the 292 has been rebuilt along with the 200-4R and installed. Vintage air is also being installed, along with a new radiator. I have had a rough time with a few things, but the flywheel and starter from the 250 bolted right up, found the correct right frame bracket, found the correct PS setup. All this has been installed by changing pulleys and adding a single pulley on the 2 grove harmonic balancer. I took it off from a 350 engine and it bolted right up to the 292 harmonic balancer. I'm currently running a new fuel line from rear tank to carb. I used the intake & exhaust from the 250 as the carb was ready rebuilt. My next step is to install core support, radiator and trans lines so I can add tranny fluid before I start engine. Just an update for a few guys trying to do the same type of swap, hope this helps someone.
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Old 06-01-2020, 03:28 PM   #39
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Re: Converting to a 292

Clean looking block.
Are you staying stock with the one-barrel, or upgrading to aftermarket Exhaust, Intake and 4-Barrel Carb?
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Every 25 years I like to rebuild that 292, whether it needs it or not.

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Old 06-01-2020, 05:24 PM   #40
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Re: Converting to a 292

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Originally Posted by old51sedan View Post
Just happened to run across this old post from a few years back. Being in my late 70's, I'm not as fast as I used to be, but wanted to not only thank everyone for all the advise, but give an update as to how things are going.
I will try to post a few pictures also. The truck has been painted, so that slowed things up a little, but as it sits, the 292 has been rebuilt along with the 200-4R and installed. Vintage air is also being installed, along with a new radiator. I have had a rough time with a few things, but the flywheel and starter from the 250 bolted right up, found the correct right frame bracket, found the correct PS setup. All this has been installed by changing pulleys and adding a single pulley on the 2 grove harmonic balancer. I took it off from a 350 engine and it bolted right up to the 292 harmonic balancer. I'm currently running a new fuel line from rear tank to carb. I used the intake & exhaust from the 250 as the carb was ready rebuilt. My next step is to install core support, radiator and trans lines so I can add tranny fluid before I start engine. Just an update for a few guys
trying to do the same type of swap, hope this helps someone.

How have you hooked the tv cable to the carb?
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Old 08-03-2020, 09:25 AM   #41
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Re: Converting to a 292

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How have you hooked the tv cable to the carb?
It's funny you should ask that, I'm right at that point now. I'm thinking of using the cable from the 200 and trying to adapt the end off the 350 tranny. Ask me again in a few days.
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Old 08-03-2020, 10:28 AM   #42
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Re: Converting to a 292

A pic of your carb and linkage would help.
There are different studs available depending on what the end of the tv cable needs.
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Old 08-04-2020, 10:38 AM   #43
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Re: Converting to a 292

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Clean looking block.
Are you staying stock with the one-barrel, or upgrading to aftermarket Exhaust, Intake and 4-Barrel Carb?
Thanks, for now I'm staying with the original setup, just trying to add the 200-4R
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Old 08-04-2020, 10:42 AM   #44
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Re: Converting to a 292

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A pic of your carb and linkage would help.
There are different studs available depending on what the end of the tv cable needs.
I will post a few pictures. I sent pics to Bow Tie Overdrives yesterday and they said sorry we can't help you. They must be someone who has done this in the past.
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