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Old 02-01-2014, 07:26 PM   #2
bigmac73
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Join Date: Mar 2012
Location: Chesapeake, Va
Posts: 1,275
Re: replacing a quadrajet with a used holley 600

second pic is just a vac fitting , are you sure you have a TH400, i dont think they have a vac modulator??? kickdown for a TH400 are electronic switched either on the foot pedal or carb linkage

third pic is a stock spread bore manifold and it will not work with a holley unless you buy the adapter/spacer plate

for the first pic, you will just have to rig something up may over size one of the smaller holes with a drill bit or a dremel tool
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Mike
72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider.
421 SBC / TH350 3000RPM Stall
Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks
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