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73-87chevytrucks.com
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73-87 Chevy _ GMC Trucks
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Hey guys got a 81 Scotty 400sbc w/th400tranny
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Topic: Hey guys got a 81 Scotty 400sbc w/th400tranny (Read 2483 times)
redhilbil81
Newbie
Posts: 10
Newbie
Hey guys got a 81 Scotty 400sbc w/th400tranny
«
on:
March 25, 2018, 04:10:06 PM »
It stalls out in reverse or drive got a pro comp thumpa can with msd ignition a new 600cfm elderbach idles great.
Where to start trouble shooting had all this in it when I bought it so anyway any help? Thanks
Sent from my iPhone using Tapatalk
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VileZambonie
Global Moderator
Senior Member
Posts: 19021
Re: Hey guys got a 81 Scotty 400sbc w/th400tranny
«
Reply #1 on:
March 25, 2018, 07:16:33 PM »
What's the ignition system you're using and what are your settings?
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74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
redhilbil81
Newbie
Posts: 10
Newbie
Re: Hey guys got a 81 Scotty 400sbc w/th400tranny
«
Reply #2 on:
March 25, 2018, 07:44:28 PM »
Good question it’s a msd billit distributor unsure of settings but the plugs are wet fouled.dont wanna change them till I get the setting right
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blazer74
Junior Member
Posts: 786
Newbie
Re: Hey guys got a 81 Scotty 400sbc w/th400tranny
«
Reply #3 on:
March 26, 2018, 01:31:55 AM »
Check for mechanical advance at idle, possible is in too early and dropping out when placed in gear and lowering rpm to low causing stalling.
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VileZambonie
Global Moderator
Senior Member
Posts: 19021
Re: Hey guys got a 81 Scotty 400sbc w/th400tranny
«
Reply #4 on:
March 26, 2018, 11:16:24 AM »
Is it a vacuum advance distributor?
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, ___
/ _ _ _\_
⌠¯¯¯¯¯' [☼===☼]
`()_);-;()_)--o--)_)
74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
redhilbil81
Newbie
Posts: 10
Newbie
Re: Hey guys got a 81 Scotty 400sbc w/th400tranny
«
Reply #5 on:
March 27, 2018, 07:39:38 AM »
How to check it, man I’m learning mechanics since I bought this truck
Has not been driven much since I got it back in sept last year it will fire and idle great just the stalling then when it dies I have to floor it to get it to start,
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Irish_Alley
Tim
Global Moderator
Senior Member
Posts: 13319
Family is not an important thing. It's everything.
Re: Hey guys got a 81 Scotty 400sbc w/th400tranny
«
Reply #6 on:
March 27, 2018, 03:35:57 PM »
take a reading
here
for Ignition Timing for First-Generation GM V-8 Engines
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley
When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
redhilbil81
Newbie
Posts: 10
Newbie
Engine stall
«
Reply #7 on:
March 28, 2018, 08:00:02 AM »
In reverse and drive after idle warm up
Has a 400sbc th 400 tranny elder600cfm carb so what are the possible causes.?it also has small lift thumper can and a 2200 stall and msd billet distrubor (don’t know settings) it Was all in Truck when purchased. Don’t have any mechanic friends so I really don’t know where to start.
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VileZambonie
Global Moderator
Senior Member
Posts: 19021
Re: Hey guys got a 81 Scotty 400sbc w/th400tranny
«
Reply #8 on:
March 28, 2018, 09:46:53 AM »
How about taking some pics and posting them. If you don't know, we won't know without seeing your setup.
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/ _ _ _\_
⌠¯¯¯¯¯' [☼===☼]
`()_);-;()_)--o--)_)
74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
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73-87 Chevy _ GMC Trucks
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Hey guys got a 81 Scotty 400sbc w/th400tranny