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Matt69olds's latest activity
Matt69olds
replied to the thread
hei vacuum advance stop plate
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Read this: https://www.460ford.com/threads/timing-vacuum-advance-101-good-article-by-gm-engineer.117504/ Delco made a BUNCH of...
Apr 19, 2024
Matt69olds
replied to the thread
Not using factory fuse box after engine swap, lighting wiring with column and ignition switch problems.
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Let’s try this again!
Apr 19, 2024
Matt69olds
replied to the thread
Not using factory fuse box after engine swap, lighting wiring with column and ignition switch problems.
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The nice thing about GM is they have used the same basic wire colors for certain functions since the 50s. This is a screenshot of a...
Apr 18, 2024
Matt69olds
replied to the thread
TH350 dipstick tube and dipstick for a TH400???
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If you can’t find a aftermarket part that checks off all your boxes, make your own!! It sounds like you already have a good tube with...
Apr 17, 2024
Matt69olds
replied to the thread
Not using factory fuse box after engine swap, lighting wiring with column and ignition switch problems.
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Power comes into the truck on 2-3 heavy gauge red wires. One goes to the headlight switch and other items that are powered at all times...
Apr 17, 2024
Matt69olds
replied to the thread
Converting Diesel Wiring to Gas
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It’s been years since I converted mine. If I remember correctly, the wiring for the diesel engine ran thru a firewall connector very...
Apr 9, 2024
Matt69olds
replied to the thread
What is this wire?
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Find the nuetral safety switch at the base of the column. Look for the connector with a yellow and purple wire. Yellow is crank trigger...
Apr 5, 2024
Matt69olds
replied to the thread
What is this wire?
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Try starting it in neutral. If that doesn’t work, make sure your foot is firmly on the brake, hold the key in the crank position, and...
Apr 5, 2024
Matt69olds
replied to the thread
Power window/lock/mirror Frankenstein conversion??
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I made harnesses for the power windows and door locks. All of that works as expected and very well. Of course, once the truck was...
Mar 29, 2024
Matt69olds
replied to the thread
Throwing Parts at the Wall
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The fast idle start is designed into the calibration. GM programmed the PROM that way to ensure the O2 sensor and catalytic converter...
Mar 22, 2024
Matt69olds
replied to the thread
I burnt it up didn't I? Take a look HEI got wet.
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Read this: https://www.gmcmi.com/wp-content/uploads/2014/05/HEI-Testing.pdf
Mar 22, 2024
Matt69olds
replied to the thread
TH400 Information Thread
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I have been searching for the unique 1-2 modulator valvetrain setup for my car to duplicate the automatic 3-1 downshift. As many high...
Mar 19, 2024
Matt69olds
replied to the thread
Electric Fan Runs After Shutting Off Engine: Where To Start
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Stuck relay? Smack the relay with a screwdriver, see if it stops. If do, replace the relay.
Mar 18, 2024
Matt69olds
replied to the thread
TH400 Information Thread
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The OW and BB calibration (I wouldn’t be surprised to find Pontiac and Chevy had their own codes for basically the same transmission)...
Mar 17, 2024
Matt69olds
replied to the thread
Need help settling a debate
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Check the wires on the pickup coil. The constant back and forth movement of the vacuum advance will bend the tiny wires and cause...
Mar 14, 2024
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