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I have a matching numbers 67 SS 396/350 with a factory Holley on it. I have been to many shows and cruizes since I bought this car about a year ago but have not seen many 350 HP matching #'s cars and I have yet to see any with my set-up on it... which is I believe, a factory Holley 585 carb (List 3837), with automatic choke, sitting on top of a cast iron Holley intake manifold. I have heard and may have even read somewhere that most 67's w/350HP motors had the Rochester set-up. Is this true??? Is this a rare "factory option"?? or are there just so few "untampered" '67 cars that this is the only thing that may make this set-up a little scarce?
My carb probably needs rebuilding which is not my cup of tea if you know what I mean. Do you recommend sending it back to the factory to be set to original specifications or does anybody know a good shop that knows the tricks to make this carb perform better than the factory expected it to? Can this carb be purchased new anywhere?
Also, as long as I am on the topic of this carb, maybe keeping the carb stock is not what I need anyway. Recently I put a set of Dynamax 2.5" headers with 3" exhaust into Magnaflow mufflers with 2.5" out the tail pipe. My main goal for this set-up was improveed sound... and this is what I got. Many people said I might lose some HP by doing this but that wasn't much of a concern because I don't race the car (use just for a cruizer). But since I made this change, the car seems to be starving for gas on the top end now. This happens right before I shift into 4th gear and through 4th, when I have my foot into it. (Note: I said I don't race it, but I do like to have fun with it once in a while). When I have the carb rebuilt should I replace jets with larger ones??? Any suggestions about what size I should use?? Or, is there a direct replacement carb that would use my existing choke and manifold set-up (don't want to remove the stock appearance if I don't have to)??
Lots of question above I know. Any responses and help would be appreciated. Thanks in advance.
[This message has been edited by RLS67SS396 (edited 08-31-99).]
My carb probably needs rebuilding which is not my cup of tea if you know what I mean. Do you recommend sending it back to the factory to be set to original specifications or does anybody know a good shop that knows the tricks to make this carb perform better than the factory expected it to? Can this carb be purchased new anywhere?
Also, as long as I am on the topic of this carb, maybe keeping the carb stock is not what I need anyway. Recently I put a set of Dynamax 2.5" headers with 3" exhaust into Magnaflow mufflers with 2.5" out the tail pipe. My main goal for this set-up was improveed sound... and this is what I got. Many people said I might lose some HP by doing this but that wasn't much of a concern because I don't race the car (use just for a cruizer). But since I made this change, the car seems to be starving for gas on the top end now. This happens right before I shift into 4th gear and through 4th, when I have my foot into it. (Note: I said I don't race it, but I do like to have fun with it once in a while). When I have the carb rebuilt should I replace jets with larger ones??? Any suggestions about what size I should use?? Or, is there a direct replacement carb that would use my existing choke and manifold set-up (don't want to remove the stock appearance if I don't have to)??
Lots of question above I know. Any responses and help would be appreciated. Thanks in advance.
[This message has been edited by RLS67SS396 (edited 08-31-99).]