SLORYDER Posted October 18, 2009 Report Share Posted October 18, 2009 I have a stock stroke engine, stock pistons and a mild top end port job, pt hi's and 33pj carbs no crossover manifolds. Sea level. What's a good starting number on my mains/ needle Oh and what's a good timing advance and could I up it by shaving .020" off my head. Thanks in advance Quote Link to comment Share on other sites More sharing options...
SLORYDER Posted October 19, 2009 Author Report Share Posted October 19, 2009 Bump Quote Link to comment Share on other sites More sharing options...
SLORYDER Posted October 21, 2009 Author Report Share Posted October 21, 2009 Bump Quote Link to comment Share on other sites More sharing options...
RILS Posted October 22, 2009 Report Share Posted October 22, 2009 Bump I assume they are 34pjs try 42pilot 148main and a cel needle for a starting point you might go a little bigger on the main in the beginning just in case I ran a 350 dragish port on that. Quote Link to comment Share on other sites More sharing options...
SLORYDER Posted October 22, 2009 Author Report Share Posted October 22, 2009 I assume they are 34pjs try 42pilot 148main and a cel needle for a starting point you might go a little bigger on the main in the beginning just in case I ran a 350 dragish port on that. Yeah I think they are 34s' actually Thanks Quote Link to comment Share on other sites More sharing options...
Burt Reynolds Posted October 23, 2009 Report Share Posted October 23, 2009 Shaving the head will tighten the squish and raise the compression. Best way to advance timing is by buying a timing plate. I wouldnt go over 4 degrees on pump gas Quote Link to comment Share on other sites More sharing options...
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