Hello, Years ago, I had a 650 Holley vacuum secondary on my '68 daily driver. It had been jetted wildly by a previous owner which made it bog when the pedal was stomped. I swapped the Holley for a new in the box, Edelbrock (Carter AFB clone). The Edelbrock frequently starved the engine, especially with cornering under acceleration. I promptly put the worn out Holley back on. The Edelbrock design is less likely to leak however, due to gasket above fuel level & may be better for "sunny day" cars. Honestly these days I prefer a GM TBI which can be bought used for under $100, has a wide variety of programmable performance options, can fit 2 or 4V intakes, takes up no more space than a carb, offers optimal fuel economy, dependability, etc. Biggest requirement is your engine has electronic ignition or similar device. I have one on my '33 Ford roadster w/ a stroked '42 Flathead & putting one on my '56 Olds 88, 2dr htp with original 324 V8. My 2 cents, Richard |
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