Thread: sluggish down low! help!
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06-15-2014 11:01 PM #1
sluggish down low! help!
Hey guys. So today I drove my car around my neighborhood today for the first time ever! I was super pumped! Brakes work great. Steering is tight! Little backround on it.
It's a 75 trans am with a 4 bolt main Chevy 350. It's punched to a 355. 10.5:1 compression. Running on Sunoco 93 pump gas. It has cast iron 2.02 camel back heads. Ported and polished. Has a edelbrock victor Jr. Highrise intake with a carb spacer. It's feed by a Holley 750 double plumper mechanical choke. The choke is wired open. HEI distributor. The cam is unknown spec. But it only pulls 6-10 inchs of vacuum.
Now the bad. It's just extremely sluggish down low. Below 3k I'd say. It breaks up a little also. The car starts fine! No hesitation. Also the idle jumps around a little. Between 900-1100. I'm not exactly sure where the timing is set. It's been a few months since I set it. I wanna say it's at 16 degrees. It did back fire once thru the carb. Should the power valve be replaced? I was wondering if this was a carb/fueling issue or if it's a timing issue or a combination of them. Any insite or things to try is greatly appreciated!
Thanks in advanced guys! And when in doubt burn out!
Nice time despite the run arounds they put you guys thru
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