C1 Road draft tube

[Susan Osborne]

Greetings, Where on the 283 is the road draft tube located? I would like to see the born on date of my block. Thanks and wonderful resource here. Susan

[Rob M.]

Re: C1 Road draft tube

Susan,

The road draft tube is fitted in the top hole on the engine on the back right from the distributor hole (see the hole in the picture below, the tube itself is not yet fitted on this engine) and runs to the left down to the bottom of the engine.

greetings,
Rob

[Rob M.]

Re: C1 Road draft tube

Susan,

The road draft tube is fitted in the top hole on the engine on the back right from the distributor hole (see the hole in the picture below, the tube itself is not yet fitted on this engine) and runs to the left down to the bottom of the engine.

greetings,
Rob

[Richard M.]

Re: C1 Road draft tube

Susan, We'll get this figured out......

I'm replying from your previous post too, about the f0922ct and the cast# you told us earlier, the G611. That's not it, good.

F0922CT is the assembly stamp, no indication of year. When they got the blocks in at the Flint assembly plant, they stamped in where(the "F"=Flint,the date(month/day) and hp configuration(yours=CT). No year.

Here's how it went. You may alrady know the details but here goes if you don't....When the engine gets cast at the foundry they pour the hot metal in a mold. On the mold they put a plate with the month,day,year. The characters in the plate are made so the result is a raised letter/number area.

See pic below of the 327 in my 62. The cast date on it is H251, H-July,25=day,1=1961. You can see the rusty old road draft tube on the left. This is always in the way when you try to look at the cast date.

It is located in the same area on your 283 block, like in Rob's picture, on the flat to the left of the distributor, just in front of the big hole(where the black wire has fallen into). You can actually see the characters sticking up on his. We're all really curious........Hope it's what it sounds like!

A note of interest. In 1959 they did not "stamp" a derivative of the vin# on the blocks. They started that in early 1960. Because of this, technically speaking, any 59 block with a cast date some time before the build date of the car can be considered "correct", along with the right assy stamp, hp config, tach redline, etc,etc,etc. It therefore is true that any 59 out there, like mine, and yours, has no indication that it's the "truly" original engine. One can just find the right cast block, etc, and drop it in and be "considered" original. I'm not saying yours is not if found cast# "correct". I'm just letting you know the reality of the early cars numbering. After 1960 the vin derivative helped eliminate confusion as they had the vin# stamped......but then, folks figured out how to "restamp" the derivative to make it appear original......but that is another topic.

Rich

[Richard M.]

Re: C1 Road draft tube

Susan, We'll get this figured out......

I'm replying from your previous post too, about the f0922ct and the cast# you told us earlier, the G611. That's not it, good.

F0922CT is the assembly stamp, no indication of year. When they got the blocks in at the Flint assembly plant, they stamped in where(the "F"=Flint,the date(month/day) and hp configuration(yours=CT). No year.

Here's how it went. You may alrady know the details but here goes if you don't....When the engine gets cast at the foundry they pour the hot metal in a mold. On the mold they put a plate with the month,day,year. The characters in the plate are made so the result is a raised letter/number area.

See pic below of the 327 in my 62. The cast date on it is H251, H-July,25=day,1=1961. You can see the rusty old road draft tube on the left. This is always in the way when you try to look at the cast date.

It is located in the same area on your 283 block, like in Rob's picture, on the flat to the left of the distributor, just in front of the big hole(where the black wire has fallen into). You can actually see the characters sticking up on his. We're all really curious........Hope it's what it sounds like!

A note of interest. In 1959 they did not "stamp" a derivative of the vin# on the blocks. They started that in early 1960. Because of this, technically speaking, any 59 block with a cast date some time before the build date of the car can be considered "correct", along with the right assy stamp, hp config, tach redline, etc,etc,etc. It therefore is true that any 59 out there, like mine, and yours, has no indication that it's the "truly" original engine. One can just find the right cast block, etc, and drop it in and be "considered" original. I'm not saying yours is not if found cast# "correct". I'm just letting you know the reality of the early cars numbering. After 1960 the vin derivative helped eliminate confusion as they had the vin# stamped......but then, folks figured out how to "restamp" the derivative to make it appear original......but that is another topic.

Rich

[John H.]

Re: C1 Road draft tube

Susan -

Here's a photo of the installed road draft tube - this is a '58.

[Susan Osborne]

Re: C1 Road draft tube

Hi Thanks for all the great information and pictures, I found the numbers by the road draft tube they are as follows, 58I1 or 5811, I tried to clean it up but it is a tight space getting your hands down in there. So the Casting number is #3756519 The Id is F922CT. Why do the numbers on the road draft tube tied in with all the other numbers, work as a tag used on a 1960 engine, were alot of the casting blocks # 4 3756519 GM made for other GM cars? By the Way, NICE 58 ENGINE! Susan

[William C.]

Re: C1 Road draft tube

yes, the 519 block was used '59-61 model years.

[Susan Osborne]

C1 1958 Picture

John, I just had to tell you NICE 1958 ENGINE! Are you rebuilding this car? This is just the set up I want. Susan

[Joe L.]

Re: C1 Road draft tube

Susan------

While lots of 3756519 blocks were cast and assembled into engines, only those used in certain Corvettes have the "CT" engine suffix code. With minor exceptions for Tonawanda versus Saginaw cast blocks, all 3756519 blocks are the same. But, all engines assembled using that block are NOT the same. That's where the "CT" suffix code comes in. It denotes the particular engine assembly configuration.

[John H.]

Re: C1 1958 Picture

Susan -

Nope, not mine - that's the "Rex" project '58 that Paragon built from scratch for our "Corvette Enthusiast" magazine project a couple of years ago; Paragon still owns it.