What is the correct casting number for a '70 Rallye 350? Was it used for other years as well?

Thanks,

Steve

 

i can check the number later but it is the same as any 1970 iron 350 4bbl manifold.

 

I appreciate you checking, my original engine is missing. I have a '70 2-barrel engine, and 1-1968 4-barrel manifold, 1-1971 4-barrel manifold, and 2-1972 4-barrel manifolds; I'm hoping that one of these 4-barrel manifolds is the same as what would have been on the '70 R350.

Steve

 

Should be 406114 with 1970 350 4 bbl with OAI

 

Isn't that the aluminum W-350 (W31) intake?
I believe the cast iron '70 350 4bbl intake is 404520

Did some or all Rallye 350s come with the W-350 intake, even if they were not W31 cars? What are the rumors & what are the facts?

 

Hurst68,
I don't think any R350 came with the aluminum intake. Thanks for the cast iron casting number, do you know if was used other years?
Steve

 

Please check & confirm:
1970 350 2-barrel manifold = 398583
1968 350 4-barrel manifold = 398663
1971 350 4-barrel manifold = 407565
1972 350 4-barrel manifold = 410446

 

Yep your right I was looking at W-31 and it is aluminum. I was looking here...

http://www.oldsmobility.com/mpc/group3000/text02.htm

1 406114 1970 ALL 350 V-8 4BC ENGINE w/OAI 1 404520 1970 ALL 350 V-8 4BC ENGINE exc OAI
??

 

there is no documentation that i know of that shows a Rallye 350 could come with the W-350 intake. i also no longer believe any Rallye 350s had the W-31 engine. now for rumors of some Rallye 350s coming with W-350 intakes? i want to believe it is true but i don't think it is. mine had one when i got the car in 1990 and the owner said it was bought new that way. i also seen another 4 speed car that the owner said came that way. i just have a hard time believing one ever came that way originally.

i don't have the iron manifold number yet. my car is on the lift and didn't have time to get it down today.

 

Thank you for your detailed help.
Steve

 

411990 - 1973-'74 350 4bbl

 

is the 407571 iron for 1970 350 4 bbl with odsmobile cast on it.