If your TPI setup is an older 85-86 unit you can bolt it directly onto most performance heads with 'standard' 86-down ports and bolt pattern. So, like any engine, match with parts that complement that RPM range.Īlso agreed, performance heads with ~180cc intake runners, 64cc chambers (to match the stock L98 cast iron heads so you don't lose compression) and keep the cam modest- in the 210-215* range.
Above 5500 you're really fighting city hall.
They help in the 2500-4500 RPM range but hurt everywhere else. Agreed, TPI stuff is for midrange punch, not high RPM work.