69 L46 Radiator Hoses

[Gary V.]

My TIM&JG hasn't arrived yet. Can someone tell me the correct GM #'s for the upper and lower radiator hoses for a:

1969 350/350 L46, standard transmission, COPPER radiator, no A/C, no P/S. October 69 build if that makes a difference.

I'm pretty sure the upper hose is 3946852, but I'm not seeing in all of my various vendor catalogs a listing for the lower hose that makes sense.

• Corvette Central shows a 3946854 for a 350 with Auto and/or AC, LT1
• Paragon shows the 3946854 as small block with Auto, 4 speed with AC,. Copper radiator.
• Doc Rebuild shows the 3946854 as Factory Equipped with a Copper Radiator, with Auto and/or AC.
• Corvette Central shows a 3917669 for a 350 with 4 speed, no AC, ALUMINUM radiator
• Paragon show the 3917669 as all with aluminum radiator or copper REPLACEMENT exc Special Hi Perf, AC or Turbo Hyrdamatic.

So, from these references, I don't see a hose for my car. What am I missing here ? What does the TIM&JG show for the correct hoses ?

Thanks in advance

Viz

[David S.]

Re: 69 L46 Radiator Hoses

As per the 69 Judging Manual. 350 with Copper -

Upper - 3946852
Lower - 3946854

-Dave

[Gary V.]

Re: 69 L46 Radiator Hoses

As per the 69 Judging Manual. 350 with Copper -

Upper - 3946852
Lower - 3946854

-Dave

Thanks Dave. So it doesn't differentiate for Auto, or AC ?

Viz

[David S.]

Re: 69 L46 Radiator Hoses



Also for your reference, below is a picture of the chart on page 65.

-Dave

[Gary V.]

Re: 69 L46 Radiator Hoses

OK, that's perfect !! Thanks again Dave, appreciate the info and quick responses !

Viz

[David S.]

Re: 69 L46 Radiator Hoses

Happy to help!

-Dave

[Joe L.]

Re: 69 L46 Radiator Hoses

Thanks Dave. So it doesn't differentiate for Auto, or AC ?

Viz

Gary-----

For 1969, any small block application that was equipped with automatic trans AND/OR air conditioning used the copper/brass radiator. Some mostly later L-46 without air conditioning (no L-46 had automatic trans) also used the copper brass radiator. The radiator hoses used with the copper/brass radiator were unique to Corvettes equipped with that radiator.

[Steven H.]

Re: 69 L46 Radiator Hoses

This may be very helpful to me this weekend as I just dropped the rad assembly in last night.

Thank you.