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Old 07-19-2017, 08:28 PM   #11
Rod Greene
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Default Re: Holley Spreadbore

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Originally Posted by Ed Wright View Post
You need some good epoxy for the caps under the main jets that keep falling off. LOL
I cut out some pieces to put in the wells, in the base plate, to keep those things in place. One of the biggest P.O.S. carburetors I ever encountered. Heat finally got to that plastic crap after a few years. Most did not age well.
I have raced and ran T Quads on the streets since 1971 never had one fail. I have had plenty of problems with Q jet. My dad had one on his 85 D350 never could get it to run right even bought a new one from Dodge. Put a TQ on it and never had another problem. I guess it is all in what you know. Now I'm fighting with the tempermental Holleys.
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Old 07-19-2017, 08:39 PM   #12
Ed Wright
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Default Re: Holley Spreadbore

Holley are easier than Quadrajets. The problem TQ carbs were all on street cars & trucks. All old enough to need work. Those caps under the main jets falling off were all high mileage, several years old. When they flood on start ups, and you don't see fuel drop on the throttle blades like a normal carb, those caps are loose. Pull the carb base, and they usually fall out on the bench. Probably fixed close to a hundred of those. You could not run fast enough to give me one.
Making a fairly new TQ run well is no problem at all. Just plastic bowls failing on older carbs.
What is your Quadrajet doing wrong?
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Old 07-20-2017, 09:12 AM   #13
Hacksaw
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Default Re: Holley Spreadbore

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Originally Posted by Ed Wright View Post
Holley are easier than Quadrajets. The problem TQ carbs were all on street cars & trucks. All old enough to need work. Those caps under the main jets falling off were all high mileage, several years old. When they flood on start ups, and you don't see fuel drop on the throttle blades like a normal carb, those caps are loose. Pull the carb base, and they usually fall out on the bench. Probably fixed close to a hundred of those. You could not run fast enough to give me one.
Making a fairly new TQ run well is no problem at all. Just plastic bowls failing on older carbs.
What is your Quadrajet doing wrong?
Mine, leaves the line ok and then stumbles and recovers, very annoying
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Old 07-20-2017, 11:32 AM   #14
GTX JOHN
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Default Re: Holley Spreadbore

I own 200 plus Thermoquads.....I have them on over a 1/2 dozen race cars.

I love the things!

The late Al Etter (Ken Etter's Dad) taught me how to rebuild them many years ago.

I used to give Jon Jr. a wallet full of $5.00 dollar bills when he was just a
5 or 6 and he would buy every darn one he could find for that or less at Pomona Swap Meet every month or so.
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Old 07-20-2017, 11:58 AM   #15
Ed Wright
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Default Re: Holley Spreadbore

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Mine, leaves the line ok and then stumbles and recovers, very annoying
About all I did were on factory stock street vehicles. Need to talk to a real race carb builder.
Do you have a wideband O2 & data logger on it? If so, is it going rich, or lean at that point? Or, somebody watching for a puff of black smoke when it does it?
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Old 07-20-2017, 01:11 PM   #16
Hacksaw
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Default Re: Holley Spreadbore

Ed: I have a D. Ashley carb that is my # 1. Since he retired I've tried to "create" my own. So close to working, but yet so far. Sent one away to "fix" the lag and came back only slightly better. No O2 sensor or data logger.
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Old 07-20-2017, 02:50 PM   #17
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Default Re: Holley Spreadbore

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Newsflash! Now legal on all AMC's!
Which one is now legal on all amcs?
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Old 07-20-2017, 07:04 PM   #18
Bruce Fulper
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Default Re: Holley Spreadbore

You got all of mine! :-)


Quote:
Originally Posted by GTX JOHN View Post
I own 200 plus Thermoquads.....I have them on over a 1/2 dozen race cars.

I love the things!

The late Al Etter (Ken Etter's Dad) taught me how to rebuild them many years ago.

I used to give Jon Jr. a wallet full of $5.00 dollar bills when he was just a
5 or 6 and he would buy every darn one he could find for that or less at Pomona Swap Meet every month or so.
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Old 07-20-2017, 09:29 PM   #19
monte385
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Default Re: Holley Spreadbore

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Originally Posted by Hacksaw View Post
Mine, leaves the line ok and then stumbles and recovers, very annoying
Who built it? What's been done to it?
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Old 07-20-2017, 10:00 PM   #20
Mark Yacavone
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Default Re: Holley Spreadbore

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Who built it? What's been done to it?
#1, Danny Ashley
#2, Hacksaw
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