Timing for a 1978 300 ci 6 cylinder
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Timing for a 1978 300 ci 6 cylinder
Hi everyone I have been away for a long time, just to much going on. Now my truck is going to start getting fixed up a little at a time. I have a 1978 F250 custom with a 300 six & C6. I was looking in my manual for the timeing it says(" see tune up decal in engine compartment"). Don't they know these decals have a bad habit of disappearing. So does anyone know what the timing for one of these 6 cylinder motors is?
Thank you.
Thank you.
Post Fiend
Joined: Nov 2002
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From: Memphis, TN
Timing for a 1978 300 ci 6 cylinder
Probably 6degBTDC when it was factory-fresh. But to get it right with all the wear on it, use a vacuum gauge. If you want it, I can e-mail you the MityVac manual (OCR is a great thing!), but you have to e-mail me first; I can't attach it to the BBS e-mail service. There's lots of other good info in it, including how the EGR & catalytic converters are supposed to work, and how to tune a carb.
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Timing for a 1978 300 ci 6 cylinder
Sounds like the outer ring of your harmonic balancer has slipped on the rubber isolator, throwing the timing mark off. I can't believe it would produce any power at 10deg AFTER... 
Postmaster
Joined: Jul 2001
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From: South Kitsap County, WA
Timing for a 1978 300 ci 6 cylinder
The only way I know of to see if you balancer slipped is to see if #1 is not at 0 when it says so on the timing marks. Having checked that what other reason would there be that 10 deg btdc works so well? Even though the emission sticker said 6 degrees on the '82 I once owned 
I would often time it to 10. It always got better gas mileage and felt more responsive.
-Kerry
I would often time it to 10. It always got better gas mileage and felt more responsive.-Kerry
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Wow, nice to hear about a straight six with a c6 trans, can you send me a pic of carb linkage, I just had trans rebuilt and it wont kick down past 30mph, come to find out my linkage must be missing something, a pic of that linkage set up would greatly help me out if you could
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Wow, nice to hear about a straight six with a c6 trans, can you send me a pic of carb linkage, I just had trans rebuilt and it wont kick down past 30mph, come to find out my linkage must be missing something, a pic of that linkage set up would greatly help me out if you could
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I am new to this and just learning
WOW, I just signed up today, just trying to get my feet wet, sorry if I did something wrong, I really don't understand how this works but figured I would give it a try, guess this is not the place for me, sorry to bother you. I will figure how to delete my account, at least my ford loves me.
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