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04-05-2021, 08:47 PM | #51 |
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Re: Inline 6 is really tired
Vacuum gauge attached, couple more degrees advanced.
What should it read? https://youtu.be/g63935rfpFQ
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1963 C20, small window, long bed 292, 4-speed Last edited by Asshat; 04-05-2021 at 09:02 PM. |
04-05-2021, 09:26 PM | #52 |
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Re: Inline 6 is really tired
Right there.
18-20 |
04-05-2021, 09:38 PM | #53 |
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Re: Inline 6 is really tired
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1963 C20, small window, long bed 292, 4-speed |
04-05-2021, 09:48 PM | #54 |
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Re: Inline 6 is really tired
What’s your timing at now?
Vac advance plugged off of course. |
04-05-2021, 10:11 PM | #55 |
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Re: Inline 6 is really tired
Hard to say, it’s past the timing mark. And, at idle, there is not enough vacuum to advance the timing. When I blip the throttle it moves the plate, so I know it works. I believe it’s in one of the other videos.
Here me chugging up the hill. I think I need a tach, can’t tell what rpm I am at. https://youtu.be/cs5aiHk9uFc
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1963 C20, small window, long bed 292, 4-speed |
04-06-2021, 12:37 AM | #56 |
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Re: Inline 6 is really tired
I use a Vac gauge on a kneescraper set under my dash.
Idle 700-800 RPM, Oil pressure 40 PSI, 180* water temp at operating temperature, I get 17.5''Hg nominal. 292 L6, .030-Over, Crane 260H cam. GM HEI Distributor.
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Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 04-06-2021 at 01:02 AM. |
04-06-2021, 01:58 PM | #57 |
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Re: Inline 6 is really tired
The cheap part of me says to put a bottle of Techron Concentrate in it. It will gently and persistently remove fuel system and intake system deposits. And check your timing. Can you hear it knock or ping when going up hill?
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04-06-2021, 02:18 PM | #58 |
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Re: Inline 6 is really tired
Didn’t notice any pinging.
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1963 C20, small window, long bed 292, 4-speed |
04-06-2021, 06:14 PM | #59 | |
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Re: Inline 6 is really tired
Quote:
I am recommending a SBC 350...easy swap...more torque...lots of performance parts available.... Any "normal old 6 cylinder" is going to lug in 5th up hills...use the lower gears like 3rd up hills if necessary.... Hope this helps....
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04-12-2021, 11:21 AM | #60 |
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Re: Inline 6 is really tired
Before pulling the engine I'd check to make sure the carb is the right size. The bore should be the same as the manifold opening. As far as I know 250's and smaller use a smaller bored carb on the same manifold. Whatever the manifold opening is should be the same as the carb. I remember from a 67 1 ton that a 292 should make good power with lots of torque.
Also before pulling the engine I'd try running some cleaner or water through it to clean up the deposits. I pulled a 250 and found out later it had stuck rings which could have been freed up quite easily. I'm not regretting the 350 though except for all the lost time where I could have been doing something more productive. Last edited by vince1; 04-12-2021 at 11:43 AM. |
04-12-2021, 06:19 PM | #61 |
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Re: Inline 6 is really tired
Some 292s in bigger trucks had a wider internal diameter exhaust manifold. These are distinguished by the 3 studs on the donut connector instead of 2 studs. The bigger ID flows more CFMs.
This pic is not the best image of the 3-stud intake, but the casting number is visable.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
04-12-2021, 06:32 PM | #62 | |
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Re: Inline 6 is really tired
Quote:
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1963 C20, small window, long bed 292, 4-speed |
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04-12-2021, 10:20 PM | #63 | |
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Re: Inline 6 is really tired
Quote:
The Offenhauser 5614 would work with that exhaust manifold. That puts you in 4v country.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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04-13-2021, 01:18 AM | #64 | |
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Re: Inline 6 is really tired
Quote:
https://www.speedwaymotors.com/Offen...L6,227895.html
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1963 C20, small window, long bed 292, 4-speed Last edited by Asshat; 04-13-2021 at 01:39 AM. |
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04-13-2021, 01:37 AM | #65 |
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Re: Inline 6 is really tired
I think this is what I need, just damn expensive!
https://www.ebay.com/itm/250-292-Che....m46890.l49286
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1963 C20, small window, long bed 292, 4-speed |
04-13-2021, 02:22 AM | #66 | |
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Re: Inline 6 is really tired
Quote:
$430 USD is a pretty penny. I bought one in 1978. Cost me under a hundred. Still using mine. The first Holley 390 carb wore out after 25 years. Now I have an Edelbrock 1404 500 CFM. Try looking fo a used Offy 5416. They last a long time. I never saw the Aussiespeed intake before. Damn interesting. Will it chamber a Q-jet? Personally, I never had luck with any Rochester carb, but I'm old and jaded.
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Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 04-13-2021 at 02:31 AM. |
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04-13-2021, 11:27 AM | #67 | |
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Re: Inline 6 is really tired
Quote:
Are you running a cam? Any videos of it running? How is your exhaust routed?
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1963 C20, small window, long bed 292, 4-speed |
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04-13-2021, 05:33 PM | #68 | |
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Re: Inline 6 is really tired
Quote:
Sorry no video. Exhaust is: Clifford Headers -- long tubes -- [about $125 in 1978] into dual exhaust with an ''N'' pipe crossover, long pipes thru turbo mufflers, exiting at angle near rear bumper. Shortbed Stepside '68 C/10.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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