z ya Posted June 24, 2002 Share Posted June 24, 2002 I am tired of dealing with my 3310 Holley and am thinking about going to the 770. What do you guys think? Or maybe a edelbrok 750? I know the 770 is a little big for my set up now but the next motor will be a stroker Quote Link to comment Share on other sites More sharing options...
JohnG Posted June 25, 2002 Share Posted June 25, 2002 I just installed a new Holley 770 Street Avenger with vacuum secondaries and electric choke on my '71 hybrid Z, and I love it. 'course I'm running a 406 sbc, with a Vic Jr. single plane intake and a 1" spacer. Your 355 may be happier with 670 CFM. What intake do you run? --JohnG Quote Link to comment Share on other sites More sharing options...
z ya Posted June 25, 2002 Author Share Posted June 25, 2002 Air Gap Rpm Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 28, 2002 Share Posted June 28, 2002 Edelbrock recomends a 750 CFM for their RPM Air Gap dual plane manifold (1500 to 6500 rpm) but yet recomends their #1407 750 CFM for over 400 cubic inch applications. I assume if you have the performer rpm cam it might work on a 350 Quote Link to comment Share on other sites More sharing options...
JohnG Posted June 28, 2002 Share Posted June 28, 2002 That's a dual-plane, isn't it? I'd recommend you ask Grumpy or one of the other engine guys before investing in a 770 CFM carb for your 355. A common mistake is to over-carburete an engine. --JohnG Quote Link to comment Share on other sites More sharing options...
Guest zfan Posted June 28, 2002 Share Posted June 28, 2002 Two of my friends run the 670 and 770 on their small block Jenson Healey's and both are pleased. By the way both cars haul ass!! Mike Quote Link to comment Share on other sites More sharing options...
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