I am currently rebuilding a 455 from a Tornado and my intake manifold is cracked between the ports and I was looking at intakes and could not find my casting number anywheres in the Olds information so I thought I would put it out here to find out what I actually have before I go to replacing with one like it or something different The castings that I have are a Big T near the front and the casting number is 410350 D1F also has a small Y near the casting numbers D1F all by itself. The block is a 396021 F and it has G heads. So according to the info I can find it is around a 1971.Any help on the intake would be appreciated. Thanks! Larsm54

 

71/72 Toro 455 intake manifold should be 231315 (Group 3.265 GM Parts Manual from 72) I could not find 410350 in either of my sources. The production date of the intake should be cast onto the top of the manifold just to the side of the carb. (3 numbers)

The G heads are from 71 production as you know.

Check the stamping pad on the engine block - it will tell you the plant/year/ and last 6 numbers of the VIN from the donor car. The 396021F was used from 68-76 so there's a wide range of years it could be from.

I cannot find anything with a big T on 455's. I can find L, R, A, U, X and Y though. I recently looked at a 72 Delta Royale that had a T code 455 (in VIN) in it. Wonder if that's the same as what you're describing?

Is this a 2bbl or 4bbl intake?

 

This is the low profile 4 bbl intake so must be from a tornado? Thanks! Larsm54

 

The only other numbers on the top of the intake is 35 but on the bottom side of the intake in the center it has a 2 and in the front hole it has 11 cast into it. The Quad jet carb last 3 numbers are 252.Thanks! Larsm54

 

The only numbers found on the block on the left front corner tab is 8/36 then in real small stamped looks like 11 SP or SP 11 front of block cast L7. Thanks! Larsm54

 

Larsm54

The low profile intakes are for the Toros. I could not find 410350. I did find 410850, it is for a 71 model. I may have a Toro intake I would sell reasonable. I do not know what year it is from. I think it is from one of the earlier models. I can check if you are interested. I also other intakes for sale.

Don W

 

7041252 is 71 Toro quadrajet.

Don

 

Thanks! Originally thought it was 410850 but after sand blasted it is definetly 410350. Also the Quad jet is 7042252. Thanks Again I will let you know if I need the intake I have to check out my local sources first. Larsm54

 

From my PN database:

410350
Intake Manifold, 4-bbl, Iron, Casting ID = "T"
1971 72 BB 425 400 455 Toronado and Motor Home uses
Heater Fitting Threads LARGE [3/4"]

If the above feller can't provide one, I probably have one or a similar and functionally identical unit such as 1970 "M" casting.

 

I realize this post is a dinosour by now, but if you have not found an intake yet, I have one really cheap......cheap......cheap. that I would love to find a new home.