Thermoquad or Holley?

brian6pac said

FYI that 9103 carb is off of a 77 400 HP, That being said I would go with the Holley.

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If it is a car carb, yea, possibly no good.
If it is a truck carb, it’s OK. No real big emissions to contend with.

RustyRatRod said

Maybe somebody else has and will chime in with the magic secret.

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It is possible to use a AFB AVS step up spring. It ain’t pretty. You can also delete the spring all together and let the TQ’s residential base plate cam lift the tree for enrichment. Not a great thing, but it works. The TQ is do-able but IMO it only goes so far. Which can be pretty good.