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Your block casting numbers are gm 3970010 is that a 350 or a 305?
Wiki User
∙ 10y ago
Actually this engine isn't worth very much unless it has an original 302 crank in it and it is a 4 bolt main, this casting number was a very common one and was used for the z-28 like the previous poster said however it was also used for 2 and 4 bolt 327's and 2 and 4 bolt 350's the only main difference is the crank and main caps, it probably is a high nickle block however making it pretty good for performance. it is not however a 305 since these came factory with 4 inch bores(305 is 3.736 inch bore)
Wiki User
∙ 10y ago
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Does 305 have casting numbers 3970010?
No. That number was used for 302's, 327's, and 350's. (4" bore)
How can you tell what the year of your Chevy 305 is by looking at the block casting numbers?
Go here: http://www.cehighperformance.com/c_truck_block_codes.htm
How can you tell which 305 you have the 170 horse or the 195 its a 1989 and you have the casting numbers if that helps?
horse
What mean 460777 on the back of the Chevy engine?
This is the block casting number for a Chevy 305, build between 1976 and 1979.
How can you tell if a small block Chevy is a 350 and not a 305?
Check the head casting numbers and reference a book that details what casting belongs to what. The best way to tell is measure the cylinder bore. Chevy 350 has a 4.00 inch bore, whereas the 305 has a 3.736 inch bore. You can't tell from the crank, they have the same crank with the same 3.480 inch stroke.
How can you tell the difference between a Chevy 350 motor and a 305?
On the drivers side of the engine in back of the cylinder head there are casting numbers and next to the casting numbers are raised letters either 5.7 or 5.0.
Is a 627 block a 350 or a 305?
14093627 is listed on Mortec as an 87-94 305 block.
What is the difference between a Chevy 305 and a Buick 305?
It depends on the year. In the mid to late 80's, GM started putting Chevys in a lot of Buicks, Pontiacs, and Oldsmobiles. Check your casting numbers to find out for sure.
Block casting numbers 355909 what size motor?
It is a Chevy 305 or 262 cubic inch. You could tell by measuring the bore of the cylinder. A 3.671 bore is a 262 and a 3.736 bore is a 305. They were made from 1975 to 1996 and they are all 2 bolt main seal engines regardless of year. The only year the 262 was made was 1975 so if your date code gives you anything other than 1975 then it would be a 305.
Where is the id numbers on a 1991 305 or 350?
The engine id is on a pad on the block located in front of the passenger side head.
How do you determine a 305 vs 350?
You have to read the block (casting vin) if you pull off the valve covor and compair to this site you will be able to find out Good luck http://www.mortec.com/castnum.htm
What year is a 305 engine with casting number 14088551?
What I found that its 1986-1988 I have the same 305 sitting in my garage
