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Does anybody know where the casting number was on the thermostat housing on a 1969 L46? Was it on the neck or on the collar? I believe it was number 3877660.
I do believe it is on the top front right hand side of the flange near the bolt location (not the stud). I'm sorry, I do not have the casting number handy.
top dead center, where the neck meets the round part, on top.
next to long mounting bolt.
the number is embossed the same direction as the hose.
the number should be partially visible with hose on.
that is the correct part #3877660
Hi,
I think sometimes the 228 and 660 housings are confused for each other because they're quite similar in configuration.
The 660 has it's # on the neck as has been described, while the 228 has it's # on the flange.
Regards,
Alan
Hi, I think sometimes the 228 and 660 housings are confused for each other because they're quite similar in configuration. The 660 has it's # on the neck as has been described, while the 228 has it's # on the flange. Regards, Alan
Hey Alan,
What was the applications for the different housings?
Hi Pete,
From the reading I've done it seems the 128 was used interchangeably with the 660. (Except of course on applications that require that little tab that the 660 has.
There was talk that the 128 was an ultra valuable production line LT-! neck which doesn't seem to be the case at all.
I just put a 660 back on my engine because the 128 seemed to raise a question.
Regards,
Alan
(I wrote 228 in my first post, but it's 128.) I don't know which is failing faster… my sight or my brain.
The 128 has a cute little logo too… a diamond with a tiny P in it, and also maybe a mold number.
You can see the logo at about 12:30 in the picture.
Hi Pete,
Yes.
The wording in the TIM&JG about recesses near the shorter hole made the judges nervous. Fortunatly they decided on a note rather than a deduct.
It's a little odd though.
The engine for my car was assembled on Jan. 7, 1971.
All the engine/mechanical parts fall just where you'd expect….. except….. the intake manifold which is an August 27, 1970 part, (and had that 128), and the water pump is a July 31, 1970 part.
?
Regards,
Alan
Hi Pete, Yes. The wording in the TIM&JG about recesses near the shorter hole made the judges nervous. Fortunatly they decided on a note rather than a deduct. It's a little odd though. The engine for my car was assembled on Jan. 7, 1971. All the engine/mechanical parts fall just where you'd expect….. except….. the intake manifold which is an August 27, 1970 part, (and had that 128), and the water pump is a July 31, 1970 part. ? Regards, Alan
Alan,
What shape was your 71 in when you bought it? Did you buy it way back when it was close to new or did you buy it later and have to chase a bunch of parts down before you had it judged?
Hi Mark,
I bought the car when it was new.
It has 46,000 miles on it and was really pretty much untouched except for the exhaust.
I ended up doing a complete restoration but bought relatively few parts.
It really was a restoration, not a "find enough parts to make a car".
I started in earnest in 1994 and more or less finished in 2006. I had it Flight Judged in 2011 for it's 40th birthday.
Still learning about it. Still trying to learn new skills. Still re-doing things!
Regards,
Alan
Hi Mark, I bought the car when it was new. It has 46,000 miles on it and was really pretty much untouched except for the exhaust. I ended up doing a complete restoration but bought relatively few parts. It really was a restoration, not a "find enough parts to make a car". I started in earnest in 1994 and more or less finished in 2006. I had it Flight Judged in 2011 for it's 40th birthday. Still learning about it. Still trying to learn new skills. Still re-doing things! Regards, Alan
Alan,
Wow, that's awesome. You held on to the C3 all through the days when they went "out of style" according to some. Now they are getting the respect they deserve. I would love to be able to see your car in person. There are so many things missing on mine that it's hard to know where to begin. 71 was a good year, I personally came "off the assembly line" in 1971, but my kids say I'm still out of style.
Hi Pete,
Yes.
The wording in the TIM&JG about recesses near the shorter hole made the judges nervous. Fortunatly they decided on a note rather than a deduct.
It's a little odd though.
The engine for my car was assembled on Jan. 7, 1971.
All the engine/mechanical parts fall just where you'd expect….. except….. the intake manifold which is an August 27, 1970 part, (and had that 128), and the water pump is a July 31, 1970 part.
?
Regards,
Alan
Well, I remember reading that you scored a 99.6, so I think you did alright even with the original housing. Who knows if there is really a "typical factory production" corvette out there!
I did read on the NCRS TDB thread that there were two different housing suppliers - one for Flint and one for Tonawanda.
It also seems that pre-1968 660 housings may have the casting number on the flange like the one I described, like this guy: http://www.ebay.com/itm/68-69-70-Camaro-Nova-Chevelle-Thermostat-Housing-3877660-Z28-LS5-LS6-L78-L34-DZ-/121499928592?pt=Vintage_Car_Truck_Parts_Accessories&hash=item1c49f5c810
Hi Pete,
That's an interesting picture.
Note the tall 'tower' is tight up against the neck like the 128, but the rest of the housing looks like a 128.
How many millions of those thermostat housing were produced over the years!!!!!!!
Thanks!
Regards,
Alan
Allan to throw a monkey wrench into your theory the 660 housing used from 65-67 had the part number cast into the flange. and in 68 it went to the neck
I'm digging this thread up because as I get parts put away in my new garage, I rounded up the housing that came on my CE block. Just so happens that it is a 3972128. This old motor's parts has always seem to confuse me.
It is a 1969 L46 with a CE motor from 1971. The block has a casting of August 2nd, 1971. Many of the parts were transferred over to the short block, including the intake manifold. So why in the world would the thermostat housing have been replaced?
Looking at your picture, I see that the casting number is on the narrow face of the flange between the diamond w/ the "P" and the step up to the stud location. You'll notice on this housing that the part number is right above the stud location. Seems that, like the 660, there were also multiple locations for the casting/part number for the 128.
Casting number location
Who knows if there is really a "typical factory production" corvette out there!
