TI Amplifier Part number help needed

[Dave S.]

The 67 Judging Guide calls for a part # 1115005 which is stamped in the single bolt boss. I have an amplifier with the long harness wrapped in what seems to be the original wrap material as in the later TI cars. It has #1115345 or #1115343 stamped on the single bolt flange.
Can anyone identify the part # 1115345 with a certain year or is this part # the same for all Amplifiers with the long wiring harness. My understanding is the plug in (early) style was changed sometime in 1968.

[Ralph S.]

Re: TI Amplifier Part number help needed

Dave, I have the original amp from my 70 LT-1 with the long harness wrapped in friction tape. # 1115343

[Mike Z.]

Re: TI Amplifier Part number help needed

Dave-the TM & JG is correct for 67; the Amp would have been stamped #1115005, which has no "pigtail", so the harness attaches directly to the connector at the housing. OEM housings had the full P/N on the single mounting ear (next to the bolt hole), whereas; over-the-counter units had only the last 3 digits "005"/"343" stamped into the side of the housing, with no stamping on the mounting ear/boss. From 64 to sometime March 67 the #5005 used a "poured in" gasket with a "cupped" backing plate, that slightly wrapped over the sides of the housing. The engineering date for the change was 2/67: to a more formal neoprene gasket and a flat edged backing plate-this improved gasket and flat backing plate were used through the remainder of the K-66 run, including serv repl units made after 71. In 2-68 (per design blueprint dates), the change from the direct plug #5005 was replaced by the 2nd design amp: #1115343, which had a "pigtail", as Ralph described on his 70 LT-1, and was used through the remainder of the Corvette option run.
The Delco licensed reproduction line has both versions/P/N available. Note: regardless of the application (with or without pigtail) the repro uses the same housing, so all have the #11115005 stamped into the mounting ear. Additionally, the cooling fin configuration differs from the OEM unit slightly; therefore, maybe subject to minor point loss in judging-they are an excellent piece in every other respect, and we carry them in our shop, as well as restored OEM units.
Mike

[Dave S.]

Re: TI Amplifier Part number help needed

Dave-the TM & JG is correct for 67; the Amp would have been stamped #1115005, which has no "pigtail", so the harness attaches directly to the connector at the housing. OEM housings had the full P/N on the single mounting ear (next to the bolt hole), whereas; over-the-counter units had only the last 3 digits "005"/"343" stamped into the side of the housing, with no stamping on the mounting ear/boss. From 64 to sometime March 67 the #5005 used a "poured in" gasket with a "cupped" backing plate, that slightly wrapped over the sides of the housing. The engineering date for the change was 2/67: to a more formal neoprene gasket and a flat edged backing plate-this improved gasket and flat backing plate were used through the remainder of the K-66 run, including serv repl units made after 71. In 2-68 (per design blueprint dates), the change from the direct plug #5005 was replaced by the 2nd design amp: #1115343, which had a "pigtail", as Ralph described on his 70 LT-1, and was used through the remainder of the Corvette option run.
The Delco licensed reproduction line has both versions/P/N available. Note: regardless of the application (with or without pigtail) the repro uses the same housing, so all have the #11115005 stamped into the mounting ear. Additionally, the cooling fin configuration differs from the OEM unit slightly; therefore, maybe subject to minor point loss in judging-they are an excellent piece in every other respect, and we carry them in our shop, as well as restored OEM units.
Mike

Mike,
Thanks for the detailed response.