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Old Jun 26, 2011 | 11:25 AM
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Default WOT help

I am sure that I am missing something simple but when the gas pedal is fully depressed the carb linkage is not at WOT. The following is a list of parts

Intake Casting # 3890490
Carb Edelbrock 1806
Spacer 1/2" phenolic (due to percolation, which is better but still an issue)

Any help on increasing the gas pedal travel or other solution is greatly appreciated.


Dan
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Old Jun 26, 2011 | 11:47 AM
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Originally Posted by jesterdcv
I am sure that I am missing something simple but when the gas pedal is fully depressed the carb linkage is not at WOT. The following is a list of parts

Intake Casting # 3890490
Carb Edelbrock 1806
Spacer 1/2" phenolic (due to percolation, which is better but still an issue)

Any help on increasing the gas pedal travel or other solution is greatly appreciated.


Dan
is this a new setup? first thing to do is disconnect the throttle linkage from teh carb, and see if it opens all the way, if not check teh carb linkage for clearance issues....

if the carb opens, then, is teh rod from teh carb to teh accellerator bracket adjusted right? if it has no more adjustment, you may need to make a new rod...also check teh pedal linkage for play or being bent,,,
hope this helps...
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Old Jun 26, 2011 | 11:48 AM
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Originally Posted by jesterdcv
I am sure that I am missing something simple but when the gas pedal is fully depressed the carb linkage is not at WOT. The following is a list of parts

Intake Casting # 3890490
Carb Edelbrock 1806
Spacer 1/2" phenolic (due to percolation, which is better but still an issue)

Any help on increasing the gas pedal travel or other solution is greatly appreciated.


Dan
The primaries are not 100% open? Secondaries won't open without the motor running and under load/high throttle (well at least the top air valve won't) - I think the throttle plates do mechanically open).

If primaries are not 100% open you may need a different throttle linkage adaptor on the Edelbrock carb.

Might check to see if the carpet is bunched up behind the gas pedal.
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Old Jun 26, 2011 | 01:00 PM
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The setup is new. I replaced the 850 DP that was on the car when I bought it. The linkage is free and the rod is adjusted so that the primaries close at idle. I checked the carpet too. There simply isn't enought pedal travel. It needs 1/2 to 3/4 inch more travel.

Any other suggestions?
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Old Jun 26, 2011 | 01:09 PM
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Originally Posted by jesterdcv
The setup is new. I replaced the 850 DP that was on the car when I bought it. The linkage is free and the rod is adjusted so that the primaries close at idle. I checked the carpet too. There simply isn't enought pedal travel. It needs 1/2 to 3/4 inch more travel.

Any other suggestions?
if teh travel is wrong, make sure teh link between teh pedal linkage and arm is tight, no play at all,,, if thats good, just bend teh pedal linkage for more clearance ,,, i just did it yesterday in my 56... you then still may have to readjust for idle/wot,, or make a longer rod...remember its not set up....
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Old Jun 26, 2011 | 01:26 PM
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Bending the linkage was the answer I expected but hoping against. Thank you all for your help. So next weekend the throttle linkage comes out.
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Old Jun 26, 2011 | 01:30 PM
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Originally Posted by jesterdcv
Bending the linkage was the answer I expected but hoping against. Thank you all for your help. So next weekend the throttle linkage comes out.
your welcome....
if you are putting the correct carb, etc back to stock form,, its probable the guy that put the aftermarket stuff on, bent it to fit his set up...
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Old Jun 26, 2011 | 04:17 PM
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Originally Posted by jesterdcv
The linkage is free and the rod is adjusted so that the primaries close at idle.
That's backwards. The rod should be adjusted so the carb lever is at WOT with the pedal fully depressed. If the primaries aren't closed at idle when you release the pedal, the carb end of the rod is in the wrong hole in the carb lever.
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Old Jun 26, 2011 | 06:02 PM
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John,
I could adjust the linkage rod to provide WOT, but there is only one hole on the carb linkage?








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Old Jun 26, 2011 | 06:08 PM
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Your rod is too short.
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Old Jun 26, 2011 | 06:31 PM
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Something no guy ever wants to hear.
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Old Jun 26, 2011 | 07:45 PM
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You need a shorter throttle arm on the carb. Can it be drilled down below the current hole for the rod? You need a shorter arm (or lever) to increase the throttle blade opening for a given amount of accelerator rod travel.
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Old Jun 26, 2011 | 08:25 PM
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Originally Posted by DansYellow66
You need a shorter throttle arm on the carb. Can it be drilled down below the current hole for the rod? You need a shorter arm (or lever) to increase the throttle blade opening for a given amount of accelerator rod travel.
I kinda' disagree here. I think the problem is your throttle actuating arm on the firewall. It shouldn't lay down on the manifold like that. At that angle, the first half throttle pedal of travel is virtually wasted.

What kind of car are we working on here?
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Old Jun 26, 2011 | 08:40 PM
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Could be - it does seem to sit kind of low. I have a BB which sits more vertical - but they use a different arm. Maybe the throttle pedal bellcrank has been broken and welded back inorrectly.
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Old Jun 26, 2011 | 08:43 PM
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My car is a 64 vert with a nom 350 built to LT1 specs.
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Old Jun 27, 2011 | 01:08 PM
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Originally Posted by narlee
Something no guy ever wants to hear.
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Old Jun 27, 2011 | 01:38 PM
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Originally Posted by jesterdcv
That firewall-mounted accelerator lever lying down on the intake is some Bubba creation, and its geometry explains why you can't get WOT; the correct lever is the second one from the top in the photo below (from LICS site).
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Old Jun 28, 2011 | 09:37 PM
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John,
Thank you for the help. I ordered the correct lever. It should be here Friday. I will install it this weekend and let you know how it goes.

Dan
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