Hey guys - looking for a little insight as to the distributor in my '73. It is a working/functioning tach drive dist. (not TI). It's working fine but I'm considering a rebuild during the winter mos. and I want to make sure it's done right.
My dilemma is that the stamped ID tag is gone. Knowing most of the car's history and the fact that is has 67xxx miles, it is believable that one of two things may have happened. Knowing how these cars chew up tach gears, it is possible that this is a generic rebuilt unit that was installed sometime in the past and the original/tagged unit was sent in for a core. The other is that this is the original, serviced for some similar reason and the tag went by-bye. I tend to believe scenario #1.
I know I can purchase a new dist. tag with all the right numbers, but what I really want to make sure of first is that this is (or is not) the right dist.
All the searches I have done point towards no identification beyond the tag, no casting dates, no P/N stamp or anything that would properly identify the dist. If anyone knows something different, please let me know.
The next issue is the proper dist. for the car. According to my research the L48 cars used a 1112098 dist. and the L82 used a 1112130. So what is the difference between the two ?? And how do I identify what's in the car ?? I suspect the difference has to do with how the advance curve is set up and perhaps a different vacuum advance. That should be all part of a professional rebuild, shouldn't it ??
Happy New Year and thanks in advance for an insight or information you can provide.
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Hey Adam - I dug under the hood of my "73 this afternoon to check out my dist. Good news, good news and I could use your opinion.
Good news is the my dist. housing is definitely cast iron and I found a chisel mark on both the housing and the intake manifold just below the tach cable outlet. Pretty tight quarters to make a chisel mark, but it's there.
So now the opinion, both marks are there and line up "relatively". The are about 1/8" away from each other in rotation. Lining them up would cause me to retard the timing.
Do you think these are good indications of the original dist. and is the gap believable compared to the original factory settings ?? I'll double check my timing, but I think I'm pretty close to the 8d BTDC spec. Possible wear/slop in the timing chain and gears ??
Thanks also for the bushing info., I'll use that as another point of reference when looking for someone to do the rebuild.
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"