TFI is slightly different in that it uses a non-stock style coil. With the older can style coil, the setup looks way more 'factory' than any GM HEI. Ken 39Master85w.partscar,50Cockshutt30,53Cockshutt50,67Marlin343,68AMX343,70Machine, 73Matador2dht401,73-74-75-76GremlinXs,75PacerX,76Hornet2dsd,76Matador4dsd, 76-77Matadorcpes,2-77AMXs304,78AMX304,78GremlinGT,78Concordsw,79Concordhb, 79PacerDL304,79Spiritsedan,2-79AMXs304/401,2-80AMXs258/401,2-80SpiritDL304/258,80Eagle4dsdn, 3-81SX4s,81SpiritGT,2-81Concord4dsd,82Eaglesw,83SpiritDL,2-85Eaglesw,2-80J20/360,80J10,85J10,2-88Eaglesw, 94Sentra2dsd (49) AMCA = http://www.amcalberta.ca ----- Original Message ----- From: "Sandwich Maker" <adh@xxxxxxxxxxxxxxxxx> To: amc-list@xxxxxxxxxxxxxxxxx Sent: Thursday, May 18, 2017 4:18:58 AM Subject: Re: [AMC-list] BBD Carburetors and HEI--Dist Gear right at the beginning of this thread, i wrote that the motorcraft shaft is 17/32" while the prestolite and delco - both points and hei - are 1/2", and that i used my old points delco gear on my 'new' hei. ken ames is right about the duraspark upgrade for the motorcraft dist; i found the info with a search for 'tfi tuneup'. " From: Matt Shumaker <mshumaker@xxxxx> " " What Jim Blair wrote sounds correct. I made this swap in 1999 or so I " think. (Where does the time go?) So my memory is not exact. I may " have bought a purpose-made distributor gear that fit on the GM " distributor. I recall that the distributor gear I used was a tight fit " with no wobble. 1999 was a time when many of the AMC cars with BBD " carburetors were still on the road, so the HEI conversion had become a " sort of cottage industry. I bought my conversion from an online source " that had been linked from the old AMX-Files website and list. " " " > ---------------------------------------------------------------------- " > " > From: Jim Blair <carnuck@xxxxxxxxxxx> " > " > You have to be careful when you do the gear swap because the Motorcraft ignition gear has a bigger hole and will wobble on the GM HEI shaft and wipe out itself and the cam gear. " > " > I recall the first year of HEI was '74 on the inline 6 GM motors. 250 and 292 until the last GM inline 6 in '85 or so (I think the G series vans were the last) " > They had an in cap coil and external coil on the same base with different cap/rotor styles and pickup coil as well as harness was different. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com