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Mod | | | Forums66 Topics128,078 Posts1,056,029 Members48,433 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
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| | | | Joined: Sep 2015 Posts: 9 New Guy | | New Guy Joined: Sep 2015 Posts: 9 | can anyone decode this number that is stamped on the pan?
Y2M17N, I am sure it is a turbo 350 but would like to know for sure | | | | | Joined: Feb 2004 Posts: 29,792 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,792 | There are 3 identifying features of a 350:
Pan is basically square, with one corner nipped off.
There is a modulator with a vacuum line nipple on the passenger's side rear of the case.
There is a kickdown cable just behind the bellhousing on the passenger's side ahead of the filler tube. A TH-250 looks the same, but has no modulator- - - -the kickdown cable also serves as a throttle pressure control.
A 350C with a lockup torque converter will have a hollow input shaft with an O ring seal near the front, and an electrical connector above the shift linkage bellcrank on the driver's side.
Some late model 350's have a dual bellhousing bolt pattern that will fit both Chevy and B-O-P engines.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Sep 2015 Posts: 9 New Guy | | New Guy Joined: Sep 2015 Posts: 9 | thanks Jerry, i see all those features on my trans, it definently is a 350, but what year is it?
| | | | | Joined: Feb 2004 Posts: 29,792 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,792 | Hard to tell- - - -the 350 was used for 20-something years (1965-85 or later) in a lot of different applications! A salvage yard with a Hollander interchange manual can probably decipher that model number, but my reference material doesn't get that detailed.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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