66 idler arm part #

[Robert P.]

Hi, can someone supply me with the correct part # for the GM idler arm for a 66

[Gary B.]

Re: 66 idler arm part #

Bob,

The forging number embossed on the arm was 3779185. The GM part number was

[Robert P.]

Re: 66 idler arm part #

Gary , so i am guessing a 14048901 is a service replacement one
Bob

[Gary B.]

[Joe L.]

Re: 66 idler arm part #

Gary , so i am guessing a 14048901 is a service replacement one
Bob

Bob-------


14048901 was the forging number on the GM #14053350 idler arm assembly. This was originally used on 1982 Corvettes. It will work for 1963-81 but is configured differently than the 63-81 idler arm and would be obviously incorrect. The 1963-81 idler arm has a generally round cross section for the forged arm component of the assembly. The 14053350 has a "squarish" cross section of the forged arm.

[Alan D.]

Re: 66 idler arm part #

So here are some C2 arms, hope pictures help (number is casting)

[Robert P.]

Re: 66 idler arm part #

thanks to all that have replied and supplied important info , also i am guessing its impossible to fine one
thank you Bob Peckham

[Joe L.]

Re: 66 idler arm part #

The 1963-81 Corvette idler arm cannot be positively identified by the forging number on the arm. That's because the exact same arm was used on the idler arm assembly for some early 60's Chevrolet light trucks. The bracket section of the Corvette assembly has one offset; the truck assembly bracket has two offsets. Thus, the two assemblies are not interchangeable nor convertible to one another.