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03-17-2018, 07:40 PM
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#26 |
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Registered User
Join Date: Aug 2016
Location: Idaho Falls, ID
Posts: 233
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Re: Tune up help needed?
In response to some of the other questions, it is a bone stock 350. Quadrajet, stock intake,divorced choke,heads, manifolds,etc. it has dual exhaust with cherry bombs.
All I’ve done to upgrade was HEI, and I have tried both Chevy hei and skip white. Problem remained with both. |
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03-19-2018, 03:20 PM
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#27 |
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Registered User
Join Date: Aug 2016
Location: Idaho Falls, ID
Posts: 233
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Re: Tune up help needed?
A quick update on my seemingly never ending quest. My compression test was all in a 110 - 125 psi. The fellow I bought the truck from, said he wasn’t sure, but thought it had around 50,000 miles on the engine. I would think that those numbers would be ok for an engine in that range of miles.
What do you guys think? |
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03-19-2018, 06:13 PM
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#28 |
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Who Changed This?
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,087
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Re: Tune up help needed?
Not real exciting, but not all that bad. I don't like to see that much variation in pressure between cylinders, but you're not racing it.
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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03-19-2018, 07:26 PM
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#29 |
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Registered User
Join Date: Aug 2016
Location: Idaho Falls, ID
Posts: 233
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Re: Tune up help needed?
Well I found the problem, the brand new wires I had put on just a few months ago were already burning out. Three boots were split, one had a hole all the way through.
Now I’m looking for new wires. I’ve looked up some threads on this and it looks like I’ll be looking for 75 corvette wires prob from Taylor. Any more specific suggestions? Keep in mind this is a stock engine and I have manifolds too. Preferably in the $60 and under range. Thanks |
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03-19-2018, 09:52 PM
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#30 |
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Registered User
Join Date: Apr 2009
Location: Lowell AR
Posts: 360
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Re: Tune up help needed?
I bought the 75 Corvette wires for mine at Napa premium Belden for $33.00
__________________
http://67-72chevytrucks.com/vboard/s...d.php?t=698292 |
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03-19-2018, 10:32 PM
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#31 |
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Who Changed This?
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,087
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Re: Tune up help needed?
Do you have the heat shields on your truck? If not, the heat can eat up the boots and wires pretty quickly. Though I will say that a set of Mallory HEI wires survived just fine with the headers, when I had the SBC in my Buick.
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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03-19-2018, 10:54 PM
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#32 |
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Registered User
Join Date: Aug 2016
Location: Idaho Falls, ID
Posts: 233
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Re: Tune up help needed?
I have the heat shields in the parts bin, looks like I’ll be putting them back on.
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03-19-2018, 11:32 PM
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#33 |
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Registered User
Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Tune up help needed?
For the more challenging areas:
http://www.crankshaftcoalition.com/w...EI_distributor Do all ignition areas first, then on to the carb. Mine started acting up and I did not notice until I checked the vacuum advance. Dam thing had sprung a leak and stopped working. I updated it with an adjustable unit. Runs like a champ now. |
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