|10-01-2012 09:15 PM|
Small block chevy engine decoded
Originally Posted by fordss
block # 3970010 head 3870126 and k11 12 cnu ? don't know what that is thanks
K= St. Catherines, Ontario, McKinnon Industries, Canada.
11=November, 12= day of month. CNM= 1970 350 powerglide, 250hp, 2B carb, A= Chevelle, F= Camaro, X= Nova/ Belair/ Kingswood. 3970010 = 350 2/4 bolt mains, 1969-1979. 3970126 = 327,350, 1967-71, 1.94 intake 1.5 exhaust, The number 3870126 does not exist.
|10-01-2012 09:34 AM|
|fordss||ok thanks for all your help|
|10-01-2012 08:33 AM|
|10-01-2012 04:42 AM|
Chevy block ID
On 09/29/2012 at 04:43 pm, I gave all the infomation to ID this block in a thread titled Chevy Engine Module Number on page 2 of the engine section. Someone has moved the thread also.
|10-01-2012 04:06 AM|
The 126 castings came on 327 and 350 engines from 1967 to 1970.
They have 1.94 intake and 1.50 exhaust valves. None of the sites list a chamber size for these heads however by looking at a picture they appear to be 74cc's. They likely don't have hardened exhaust seats and they also may not have accessory holes.
|10-01-2012 12:42 AM|
I have a Chevy Small Block Parts Interchange Manual by Ed Staffel, SA Design Books.
It shows this casting number was used for 3 different engines:
1. A 1969 302 with 4 bolt mains in a Z-28 Camaro
2: A 1969 327 with 2 bolt mains in trucks and industrial engines
3. A 1969 thru 1980 2 or 4 bolt main in most anything on the assembly line.
The head number doesn't appear in my book.
|09-30-2012 11:54 PM|
I need a chevy small block engine decoded
Block numbers is 3970010
Head numbers is 3870126
If you could decode this it'd be most appreciated. Thanks