Holley or Thermoquad??

AlaskaJeff said

View attachment 1715636268 So on my 70 Duster, from what I've found out, has the engine and drivetrain (360/727/ 8 3/4" rear end) out of a 74 Duster. I currently have an older Holley 750 double pumper carb & LD340 Edelbrock dual plane intake on the motor. What little I was able to drive it before I put it up, the carb seemed to be doing well with no hesitation, stumbling, or any other quirks.
I was thinking that it would be fitting to find a 74 Thermoquad to put back on it for nostalgia and overall Moparness. Truth be told I've never been a fan of Holley carbs on Mopar engines anyway. Would it be worth switching? or "If it aint broke don't fix it"

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Im a lot in the “If it ain’t broke....” band wagon. However, if you wanna try out a TQ, I’m all for experimentation just to see how **** works.

The first thing about a TQ is to get one that is in good to excellent shape. Also, the LD340 can be carved out to accept a TQ. No spacer needed. But you may want one anyway incase you go back to the Holley. Check hood clearance with the spacer!!!!

Secondly, the less emissions equipment or ports on the carb, THE BETTER! Tuning kits designed for the TQ are super expensive. Find busted up fires with there rods and nets to help get it done or use AFB rods cut down 3/4 of an inch to be sized right. They are a good bit thicker than a TQ rod, so you’ll need to be a little crafty there.

I disagree with the intake valve being a limited on carb size in a very big way.