Newbie to the wonderful world of inliners. Building a 250 for dirt track racing. Want to run in the 5000 - 5500 rpm range. In the past I ran an Olds 350 in the same rpm range and kept popping the diaphrams in the stock mechanical fuel pump. Ended up going with a HV Edelbrock fuel pump. The question is how many rpms will a stock mechanical fuel pump hold up to? Any help is GREATLY appreciated. Electric fuel pumps are not a option.
