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By geo56 - 2 Weeks Ago
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I am in the process of returning my 56 Victoria with 292 and Fordomatic back to original by switching back to the originjal A manifold and Holley 4000 . I have rebuilt and modified the carb to run with the later distributer and have replaced the heat tube in the manifold. Why am I going backward with the swap? I have run a 450 cfm Holley with manual choke on a B manifold for several years and have been happy with warm weather driving. On the other hand, even in mild Tulsa winters, cold weather driving has been a challenge, especially at stops before the engine has become warmed up. The holley carb was intended for a 289 and as my spark plug readings showed pure white without any hint of brown, I think my Holley might be too lean for the 292. I tried adding the heat riser valve a while back and it didn,t help and only made my exhaust pipe hang low enough to rattle against the frame. Anyway, I am hoping the swap will enable me to have a better cold weather car that I can walk away from while it is warming up and not have to do brake stands at stop lights. I was wondering if anyone knows if a phenolic spacer is available for the Holley 4000. My purpose would be to avoid vapor lock on hot days. Also , would I hurt anything by leaving out the heatriser valve. By the way, I am not a hot rodder and desire a car that runs as smooth and efficiently as it did when new.
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By Deyomatic - Last Week
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Sounds like your mind is made up but did you ever play around with jets in the 450?
I have no clue if these are the correct measurements, and it is aluminum, but that shouldn't be a problem.
https://www.dashman.net/product.php?id=249
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By 55blacktie - Last Week
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The 450 cfm Holley is bigger than the Holley 4000 Teapot carburetor; if anything, it should be rich, not lean. If you insist on going backwards, you can purchase a PCV conversion kit from one of the Tbird suppliers. The kit uses a phenolic spacer to which the PCV hose attaches. You could also try installing multiple carburetor base gaskets.
Personally, I would work on getting that 450 cfm carburetor dialed in.
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By KULTULZ - Last Week
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An automatic choke on a carb setup has to be adjusted correctly (specs in WSM) and used in conjunction with a heat riser (properly maintained and functional). The choke may have to be calibrated (adjusted) according to the temps/humidity where you live. Correct fuel curve and balance, correct engine state of tune.
HERE - https://www.ebay.com/itm/267324854653?var=0&toolid=10044&loc_physical_ms=92810&customid=c37b59229d6d1b8f6f0631b70e52cbba
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