I apologize for extending this thread to the point of being annoying, but just wanted to state what I found out about my carburetors.
After watching a youtube video, it turns out my original Holley 600 cfm carb from the factory didn't drill out the hole from the primary venturi to the vac secondary! So I have been running only on 2 barrels the whole time. But it still ran mid 14 seconds off 300 cfm which is pretty good imo.
I contacted Holley to ask what size hole it needs to be and drilled it out myself. I just tested my Holley 600 today and this 350 is running mean with that carb. It may even be running better than my Holley 670 street avenger but I think that is because the 600 has a lighter secondary spring in. I'll look into tuning them before the track in the spring to test both.
Seems I have had 0% luck in every aftermarket part in being manufactured correctly. IDK what is up with that but quality control must've been non-existent in the early 2000s when everything was ordered.
I was also curious about the quardrajet. I rebuilt one with the high performance parts with the recommendations for my engine, read through the book with a lot of time put into it. It is possible I did something wrong but my engine did not like it at all. It runs fine as a daily driver but the holley's performance is quite explosive in comparison. Quadrajet seemed to just tame my engine considerably and was a big disappointment. Night and day difference in performance.
Quote:
Originally Posted by steve25
How is your car sitting, is the ass end higher then the front and if so by how much?
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Forgot to reply here. The front was lowered before taking it to the track and the rear is the original height. This may not be the best picture. I recently installed a front spoiler.
I'd bet I can get this 350 to do mid 12 seconds. It is running wild now with these holleys and I havent even got into tuning them to perfection yet.