Engine decoding?
February 9th, 2009, 06:14 PM
#1
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Location: Minnesota
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Engine decoding?
I know this is a sin but when I bought my Cutlass someone had already swapped out the V6 for a small block V8 chevy engine. I would like to get a olds 455 someday but I have to run this engine for awhile
If anyone can decode the block numbers or knows of a site that can Please help. All of the sites I can find only go up to 1986 and I know for a fact that the engine is atleast a 1987.
If anyone can decode the block numbers or knows of a site that can Please help. All of the sites I can find only go up to 1986 and I know for a fact that the engine is atleast a 1987.
February 9th, 2009, 07:25 PM
#2
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 48,218
I know this is a sin but when I bought my Cutlass someone had already swapped out the V6 for a small block V8 chevy engine. I would like to get a olds 455 someday but I have to run this engine for awhile If anyone can decode the block numbers or knows of a site that can Please help. All of the sites I can find only go up to 1986 and I know for a fact that the engine is atleast a 1987.
If anyone can decode the block numbers or knows of a site that can Please help. All of the sites I can find only go up to 1986 and I know for a fact that the engine is atleast a 1987.
April 16th, 2014, 12:38 PM
#5
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Posts: 10
i have a chance to buy a 455 but I don,t know when it was made and what heads are on it so far the numbers I have are (Block# 396021 F )supposidly the date number is *232* stamped in ( 34M108562 ) supposidly date code is *195* these are the numbers the guy sent me can anyone tell me the info on this motor like when it was made and the like I have to get back to him to ask about the heads
April 16th, 2014, 02:43 PM
#7
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Join Date: Apr 2014
Posts: 10
motor codes 455
so the number with the F is on all 455 motors?I have another question everyone says the J heads are the worst? right I am wondering if you are trying to get the best gas mileage instead power if that still holds true ???? I know it sounds funny but with gas prices today it is something to keep in mind I think. Also at one time this motor I have in my shop now was in a 71 Delta 88 4 door hard top. Allot of guys don,t believe me but I got 28 miles to the gallon highway miles so I figure if I put this motor and transmission in a car that weighs 1000 less or more I should get the 28 MPG or better
Last edited by Ice Cream Man; April 16th, 2014 at 02:48 PM.
April 16th, 2014, 03:08 PM
#8
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Join Date: Feb 2010
Location: West Michigan
Posts: 1,587
The biggest factor in whether you'll get 28 mpg highway will be the rear end gear ratio. But you'd do even better with a 350 and a modern overdrive transmission.
If you're building a low-rpm 455 for maximum fuel economy, the J heads will be fine.
If you're building a low-rpm 455 for maximum fuel economy, the J heads will be fine.
April 16th, 2014, 08:00 PM
#9
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Join Date: Apr 2014
Posts: 10
I have a 9 inch ford rear end 3.0 what do you think about that gear ratio think it is high enough? As you can tell I am new at doing this? I have a good running 350 I thought about connecting a S 10 5 speed to that and then the 3.0 9 inch ford ?????????
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