351 4bbl
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Joined: Feb 2008
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the truck takes about 25 mins to warm up in the morning before it will even attempt to take off in gear. If you dont let it warm up it will just stall when put in gear. also it kinda misses and backfires when you punch it. Also it will stall sometimes while taking off from a stop
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Joined: May 2003
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From: south louisiana
Check the ignition timing, it should be set at about 10-14* BTDC. To check for vacuum leaks, use a can of spray carb cleaner and with the engine running, spray all around the intake/carb, if there's a leak, you'll hear the engine's idle change when the carb cleaner gets sucked into the hole. Do a tune up, new plugs,wires, cap, rotor. Check the accellerator pump arm clearance, look into the throttle bore under the choke and with the engine stopped, work the throttle lever and see if there's gas squirting into the bore when the lever is moved. There should be gas squirted as soon as the lever is moved. If not, then either the pump diaphram is busted, or there's too much slack in the pump arm linkage, you'll see an adjustment screw above the pump arm. Adjust till the slack disappears.
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Joined: Jun 2005
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Originally Posted by baddad457
Check the ignition timing, it should be set at about 10-14* BTDC. To check for vacuum leaks, use a can of spray carb cleaner and with the engine running, spray all around the intake/carb, if there's a leak, you'll hear the engine's idle change when the carb cleaner gets sucked into the hole. Do a tune up, new plugs,wires, cap, rotor. Check the accellerator pump arm clearance, look into the throttle bore under the choke and with the engine stopped, work the throttle lever and see if there's gas squirting into the bore when the lever is moved. There should be gas squirted as soon as the lever is moved. If not, then either the pump diaphram is busted, or there's too much slack in the pump arm linkage, you'll see an adjustment screw above the pump arm. Adjust till the slack disappears.
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I just rebuilt the carb on my bosses 66Tbird 390 4V I wonder if thats the same one he has, I can't remember but the jets were clogged and I had to use a drill to clean them.... go easy fellows... I just used my fingers to spin the drill though.... stuff was hard as rock, make a huge difference. Got the kit at AutoZone
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From: pg b.c
Originally Posted by HemiEater
I just rebuilt the carb on my bosses 66Tbird 390 4V I wonder if thats the same one he has, I can't remember but the jets were clogged and I had to use a drill to clean them.... go easy fellows... I just used my fingers to spin the drill though.... stuff was hard as rock, make a huge difference. Got the kit at AutoZone
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Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
Originally Posted by HemiEater
here's what it looked like... had a 116 (I think) on the side, I think they had 3 different sizes all depends on that number thats stamped on the side, it was in a circle...
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Joined: May 2003
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From: south louisiana
Originally Posted by ssidney
the original holley on the 351w were unique to the truck...some of them even said motrcraft on 'em and they flow 600cfm, if the one on your boss' 390 is the same as the one I got off a truck with a 390..it flows 780 cfm