'79 OEM Radiator Help
Race Director
Joined: Oct 2000
Posts: 12,661
Likes: 3,118
From: Shamong, NJ
From 76 to some point in 79, 3035856 was the radiator supplied when HD cooling was ordered. This was a 1 1/2" inlet radiator. During the 79 model, GM switched all of their radiators over to the smaller, 1 1/4" size inlets. From that point forward, 3043087 was the HD radiator. I've never seen a date or VIN, when the change occurred, but I've always suspected that it was late in the model year?
An L-82 with air conditioning, automatically got the HD radiator, V01 was only offered as an option on L-48's, or L-82's without AC.
From my previous post:
3035856
1976 - 350, w/hi-performance (L-82) & air conditioning, 2nd design 76, code ML, 1 1/2" inlet.
77-79 - 350, w/spl hi-performance (L-82) & air conditioning, 1st design 1979, code ML, 1 1/2" inlet.
77-79 - 350, w/HD radiator (V01), 1st design 1979, code ML, 1 1/2" inlet.
3043087
79 - 350, w/hi-performance (L-82) & air conditioning, 2nd design 79, code FW, 1 1/4" inlet.
79 - 350, w/HD radiator (V01), 2nd design 79, code FW, 1 1/4" inlet.
Race Director
Joined: Oct 2000
Posts: 12,661
Likes: 3,118
From: Shamong, NJ
GB:
Thanks for checking. The judging manual states that the same radiators were used for both AT and MT cars; however, the fittings for the automatic transmission cooling lines were plugged on manual transmission cars. So, unless there's something special about the plugs, I may be able to use one of your AT radiators after all. Can I impose on you to check the broadcast codes to see if there's an 'MJ' among them? Thanks for your help.
Phil
Thanks for checking. The judging manual states that the same radiators were used for both AT and MT cars; however, the fittings for the automatic transmission cooling lines were plugged on manual transmission cars. So, unless there's something special about the plugs, I may be able to use one of your AT radiators after all. Can I impose on you to check the broadcast codes to see if there's an 'MJ' among them? Thanks for your help.
Phil
I'll try to get a better look at them in the next day or two.
Thread Starter
Instructor
Joined: Jun 2008
Posts: 180
Likes: 13
From: Boston Massachusetts
Your right, starting around mid 76, all Corvette radiators contained the fittings for the trans cooler. I just wasn't thinking about that when I pulled them out. I remembered you said you had a 4 speed, and when I saw the fittings, I didn't even think to look them over further.
I'll try to get a better look at them in the next day or two.
I'll try to get a better look at them in the next day or two.
That would be great. Thank you.
Phil
Racer
Joined: Jan 2014
Posts: 339
Likes: 9
From: Goodyear AZ
1979 will second design radiator fit in early model 1979
According to my 1980 Corvette Chassis and Body Parts Catalog, 3035558 was used in 78, but it carried the code "MJ", not "ML". The parts book lists part number 3035856 as radiator code "ML".
Here's the breakdown of the radiator usage from 76-79, starting winth the 76 2nd design (the same radiators were used from 76-79).
3035558
1976 - 350, except hi-performance (L-82), 2nd design 76, code MK, 1 1/2" inlet.
1976 - 350, w/hi-performance (L-82) w/o air conditioning, 2nd design 76, code MK, 1 1/2" inlet.
77-79 - 350, except HD radiator, code MK & MJ, 1 1/2" inlet.
77-78 - 350, w/air conditioning, except hi-performance (L-82), code MK, 1 1/2" inlet.
3035856
1976 - 350, w/hi-performance (L-82) & air conditioning, 2nd design 76, code ML, 1 1/2" inlet.
77-79 - 350, w/spl hi-performance (L-82) & air conditioning, 1st design 1979, code ML, 1 1/2" inlet.
77-79 - 350, w/HD radiator (V01), 1st design 1979, code ML, 1 1/2" inlet.
3043087
79 - 350, w/hi-performance (L-82) & air conditioning, 2nd design 79, code FW, 1 1/4" inlet.
79 - 350, w/HD radiator (V01), 2nd design 79, code FW, 1 1/4" inlet.
3043083
79 - 350, except HD radiator (V01), codes FP & FR, 1 1/4" inlet. * This radiator doen't carry the note in the parts book, that it was 79 2nd design, but having the smaller 1 1/4" inlet, would make it a 79 2nd design radiator.
Here's the breakdown of the radiator usage from 76-79, starting winth the 76 2nd design (the same radiators were used from 76-79).
3035558
1976 - 350, except hi-performance (L-82), 2nd design 76, code MK, 1 1/2" inlet.
1976 - 350, w/hi-performance (L-82) w/o air conditioning, 2nd design 76, code MK, 1 1/2" inlet.
77-79 - 350, except HD radiator, code MK & MJ, 1 1/2" inlet.
77-78 - 350, w/air conditioning, except hi-performance (L-82), code MK, 1 1/2" inlet.
3035856
1976 - 350, w/hi-performance (L-82) & air conditioning, 2nd design 76, code ML, 1 1/2" inlet.
77-79 - 350, w/spl hi-performance (L-82) & air conditioning, 1st design 1979, code ML, 1 1/2" inlet.
77-79 - 350, w/HD radiator (V01), 1st design 1979, code ML, 1 1/2" inlet.
3043087
79 - 350, w/hi-performance (L-82) & air conditioning, 2nd design 79, code FW, 1 1/4" inlet.
79 - 350, w/HD radiator (V01), 2nd design 79, code FW, 1 1/4" inlet.
3043083
79 - 350, except HD radiator (V01), codes FP & FR, 1 1/4" inlet. * This radiator doen't carry the note in the parts book, that it was 79 2nd design, but having the smaller 1 1/4" inlet, would make it a 79 2nd design radiator.
