Quote:
Originally Posted by PDC
Hey Napster! This is a bit off topic. I hope you don’t mind and I hope this helps someone. When I bought my Red ‘73, the engine had been re-built and topped with a true Holley 750HP. Car flick started, idled clean, and ran like a top. Over time, I encountered a few drivability issues with Big Red, and my local mechanic did a simple rebuild of the carb with a new Holley gasket and O-ring set. Car returned to driving like it had fuel injection.
I didn’t know anyone locally familiar with Q-Jets, so when the time came for a new carb on my Green car, I went with a Holley ‘Street’ HP-750. I wan’t trying to pinch pennies by any means. But the car always ran pig rich and fouled plugs like crazy. My mechanic was more than willing to re-jet the ‘Street’ HP and swap the Power Valve to match the specs of the true OG ‘HP’ but instead, he said: ‘if you like the way your Red car runs, just get a real HP-750 for the Green car.’ I did and never looked back. Set the 4-corner and idle speed and the Green car ran like it had fuel injection. Flick started, ran strong and clean, plugs looked perfect.
If your Brawler ever starts bucking or surging or otherwise disappointing you, I wouldn’t hesitate to go with the OG ‘HP’ series Holley in whatever CFM your mill requires.
I love my new Black Car - but FWIW, you really DON’T know what you have til it’s gone. I didn’t know how much I loved my Green and Red ‘73s till they were gone. That said, I don’t have Jay Leno’s garage space or $$, so my various car experiences are enjoyed 1 or 2 (max) at a time!!!
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PDC,
That is great advice. The Brawler right now is working fine. If it acts up I will go with the advice.
One of my other cars, a 1970 T/A, has a hard to get Holley 780 cfm with vacuum secondaries on a reproduction Ram Air IV intake manifold that was on the car when bought. However, I am now running into major problems with the intake creating 2 major vacuum leaks. When the leaks are not there the engine runs great. Got sick of the problems it created and had to buy the real deal Ram Air IV intake.
Jim