350 Casting Numbers

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Marcus

Full Access Member
Joined
Mar 18, 2019
Posts
89
Reaction score
12
Location
Gans, Ok
First Name
Marcus
Truck Year
1985
Truck Model
GMC K1500
Engine Size
305
Last edited:

legopnuematic

Licensed Junk Dealer
Supporting Member
Joined
Oct 27, 2016
Posts
1,708
Reaction score
3,656
Location
MO
First Name
Spencer
Truck Year
1971, 1̶9̶7̶4, 1976, 1979,1̶9̶8̶5, 2002
Truck Model
Dart Swinger, Sierra 10, C10 Cheyenne, C10 Big Ten, Silverado 10, Ram 2500
Engine Size
225/6, 350 c.i., 350 c.i., 5.9l Cummins
You can also note that a 153 tooth flexplate always uses the straight bolt pattern starter, and the 168 tooth flexplate uses a angle bolt pattern starter.
You learn something new everyday! I never put any thought into that as all my small blocks use the 168 tooth flexplates so I never really needed to figure that out.
 

arbea

Junior Member
Joined
May 11, 2018
Posts
1
Reaction score
1
Location
Gilbert, MN
First Name
John
Truck Year
1986
Truck Model
c10
Engine Size
305
You must be registered for see images attach
don't forget to take out the pilot bushing in the end of the crankshaft.
 

MikeB

Full Access Member
Joined
Apr 4, 2014
Posts
1,745
Reaction score
935
Location
Justin, TX
First Name
Mike
Truck Year
1969
Truck Model
C10
Engine Size
355
The "010" block is probably the most common 4-inch bore block Chevy ever made. One of David Vizard's books says it was used for 68-79 350s and for high-performance 68-69 327s. Some had 4-bolt mains, other 2-bolt. There were something like nine other casting numbers for 68-79 350 blocks.

You can use any diameter vibration damper, although 8-inch was used for high performance and probably truck engines. Doesn't matter which flywheel or flexplate you use with either size damper, since the engines were internally balanced until 1986. The exception would be the 400 small block.
 

Marcus

Full Access Member
Joined
Mar 18, 2019
Posts
89
Reaction score
12
Location
Gans, Ok
First Name
Marcus
Truck Year
1985
Truck Model
GMC K1500
Engine Size
305
You must be registered for see images attach
don't forget to take out the pilot bushing in the end of the crankshaft.


What size bolt do y’all use for this? Or what kind of tool other than a socket or the actual puller. I don’t have a puller so have to do it the poor boy way
 

CoggedBelt75

Full Access Member
Joined
Jul 31, 2010
Posts
35,029
Reaction score
144,875
Location
Altus, Oklahoma
First Name
Joe
Truck Year
1975
Truck Model
C10
Engine Size
383
We used to use grease packed in the hole & a bolt way back when. Just don't get carried away with the hammer. This guy has a cleaner idea, no matter how silly it seems.

xc_hide_links_from_guests_guests_error_hide_media
 

MikeB

Full Access Member
Joined
Apr 4, 2014
Posts
1,745
Reaction score
935
Location
Justin, TX
First Name
Mike
Truck Year
1969
Truck Model
C10
Engine Size
355
I can't see why you need to remove it to bolt on a flexplate. ???
 

CoggedBelt75

Full Access Member
Joined
Jul 31, 2010
Posts
35,029
Reaction score
144,875
Location
Altus, Oklahoma
First Name
Joe
Truck Year
1975
Truck Model
C10
Engine Size
383
I haven’t messed with a standard since the late 80’s so someone correct me if I’m wrong. Doesn’t the hub actually fill the space the the bearing is occupying to the point where it’s an interference? If so, and the bearing is still in place, then the converter won’t be able to be fully seated. My fuzzy opinion FWIW

You must be registered for see images attach
 

Bennyt

Full Access Member
Joined
May 17, 2019
Posts
1,018
Reaction score
1,397
Location
Surprise
First Name
Ben
Truck Year
1977
Truck Model
C10
Engine Size
350
I haven’t messed with a standard since the late 80’s so someone correct me if I’m wrong. Doesn’t the hub actually fill the space the the bearing is occupying to the point where it’s an interference? If so, and the bearing is still in place, then the converter won’t be able to be fully seated. My fuzzy opinion FWIW

You must be registered for see images attach


May or may not depending on how long it is or if it was fully seated. But I agree with you and I would remove it. I usually use a slide hammer. Takes more time to set-up the tool, clean it and put it away then it does to remove it. Less than 5 minutes. I don't recall if I ever used the packed grease method but I remember my HS shop teacher teaching us that way.
 

Bennyt

Full Access Member
Joined
May 17, 2019
Posts
1,018
Reaction score
1,397
Location
Surprise
First Name
Ben
Truck Year
1977
Truck Model
C10
Engine Size
350
The engine was made in 1974 but put into a 1975 vehicle. The amount of interchangeable parts is amazing don't really need an exact model and year, but if you need parts ask for a 1975 full size Chevy car then. If I'm not mistaken Full size is in regards to a cars such as Caprice, Bel Air and such. I'm not sure if they made Police model Squares.

My '89 GMC Jimmy V1500 was a police vehicle. Always confused people as it had single headlights, steel wheels, and other weird options. I bought it off the Sheriffs dept when they retired it at 99,000 miles. Had about 100 receipts in the glove box for the speedometer being verified for accuracy.
 

Marcus

Full Access Member
Joined
Mar 18, 2019
Posts
89
Reaction score
12
Location
Gans, Ok
First Name
Marcus
Truck Year
1985
Truck Model
GMC K1500
Engine Size
305
I can't see why you need to remove it to bolt on a flexplate. ???


I had to remove it so my torque converter will work properly. It had a 4 speed behind it in the jimmy that it was in. I’m putting it in an automatic truck so it had to be removed.
 

Latest posts

Forum statistics

Threads
41,851
Posts
903,500
Members
33,365
Latest member
rossivey
Top