Help Identifying
March 19th, 2011, 12:05 PM
#1
1970 Cutlass Convertible
Thread Starter
Join Date: Jun 2010
Location: St Louis MO
Posts: 70
Help Identifying
I own a 1970 Cutlass Supreme. The block is casting number 395558 2 and the intake is cast 411990. I know that the intake isnt original to the car From what I have read the intake is a big block. How is that possiable? It is however painted blue.....
--Scott
--Scott
March 19th, 2011, 01:33 PM
#2
First off, is the first number right? I can't find that in any of my Olds books.
2nd the 411990 intake is a 4 brl from a 1973 350 and the 557265 motor you talk about is in fact a 403. The ID after the block number is a 4A it's a 1977 and if it's a 4B it's either a 1978 or a 1979 motor.
The correct number in 1969 for a Olds 350 motor would be 395558 with the ID number of 2, which is a pretty good motor
2nd the 411990 intake is a 4 brl from a 1973 350 and the 557265 motor you talk about is in fact a 403. The ID after the block number is a 4A it's a 1977 and if it's a 4B it's either a 1978 or a 1979 motor.
The correct number in 1969 for a Olds 350 motor would be 395558 with the ID number of 2, which is a pretty good motor
Whats A Gold Rocket 350 Worth Adam
March 20th, 2011, 07:41 AM
#3
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,693
411990 is a mid-70s 350 intake. The EGR valve is the giveaway. The 395558 2 block casting was used on every 350 block cast from 1968-1976. It's possible that your entire engine was replaced, or just the intake. Blue paint can be bought in spray cans and means nothing.
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