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#1
10-01-2025, 12:52 PM
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Q-Jet Retuning 400 -> 350
I'm wondering what to expect from the 7028268 carb I put on top of the 350 in our Ventura. I had this carb running on my GTO when it was a 400 and built it to one of Cliff's recipes years ago, likely the most conservative. It starts and idle great, just like it did when it was on my GTO. I haven't had a chance to get the car out on the road yet since we're waiting on seats, but have the carb off to install a new secondary air door spring so I figured I might as well ask.
I left the primary combo of 72/42B and it has a set of of BE secondary rods in place. I can't remember for sure, but I think they may have been modified with smaller tips? Since it's a smaller cube engine with a smaller cam (9777254 269/277/113 @ 0.377”/0.413 vs. Crower 90619) should I change anything?
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Ken '68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (build thread | walk around) '74 Ventura 350 '69 AMC Javelin SST |
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