Jan 11, 2010 · The module assumes that you have the OEM distributor on an OEM application in the OEM position. So while it may have idled with 20-25 degrees total when the +5 signal is online …

Feb 12, 2017 · I use a 5 pin HEI module out of an '80 Oldsmobile Toronado w/ 307 or 350 engine, works just like a "regular" 4 pin HEI module, but ground the 5th pin and it will retard crank timing 5 degrees.

Dec 20, 2010 · Some later HEI distributors used five terminal modules, the fifth terminal was used to retard timing based on sensors and circuitry external to the distributor.

Feb 29, 2020 · "The key to reducing heat buildup in the module is to use the special white grease supplied with new modules on the mounting side of the module. This grease creates a better heat …

Oct 20, 2024 · For a cheap ignition retard, I use is a 5 pin GM HEI module (1980 Oldsmobile Toronado) or Standard Motor Products #LX330. When a ground signal is placed/applied on the 5th pin, it …

Mar 21, 2019 · I use the 5 pin HEI module for it's 5 crank degree retard feature when a ground signal is placed on the 5th pin, works quite well. Look for an '80 Oldsmobile Toronado with 307, should give …

May 4, 2023 · Since you currently use GM HEI, replacing the standard 4 pin HEI module with a 5 pin HEI module with give around 5 degrees of ignition timing retard when a ground signal is placed on …

Jun 26, 2019 · The module turns the coil off if it does not get successive trigger signals representing engine speed above very low RPM well below any normal cranking speed. The MSD module multi …

Jan 9, 2018 · The big deal here is the module varying that bias voltage through the second pickup coil pin/wire, which is what changes the dwell time. On the Honda application, there are problems with …

Jul 30, 2010 · -this HEI in the photo has a 5 pin module. -I tested the 5th pin with a 4.5v battery supply and a 12v supply and with a ground wire----all of these methods retard the timing but it cuts the …