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Joined: Mar 2009
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I can't seem to find info on small block chevy head #336882.
Does anyone know what the spec's are on this cylinder head??
I have engine block # K12 09 CNV with the #336882 heads, I'm try to find out what the compression ratio would be with this type of set up.
All parts are stock.
Keeping vintage Chevy alive.
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Willwood Engineering
Wilwood Engineering designs and manufactures high-performance disc brake systems.
Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188
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Joined: Nov 2001
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ChatMaster - 15,000
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ChatMaster - 15,000
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Are you sure that you have not missed a digit? Casting numbers for the V-8 era I have have 7 or more digits.
How Sweet the roar of a Chevy four!
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ChatMaster - 750
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ChatMaster - 750
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could the head number be 333882 ? If so its usage is listed as 74-80...350/400....76cc chambers
DD
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Joined: Mar 2009
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Backyard Mechanic
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Hi: Chipper
The engine code for the block is as follow's, # 101140287 K12 09 CNV on the pad in front of passenger head.
The Cylinder head number is as follow,s # 336882 M14T E28-74.
My guess is the block is a 1970 with 1974 heads, but what would this combo make for compression??
I am doing a engine build up and need to have at least 9.5.1 compression if not more.
Hope this helps.
Keeping vintage Chevy alive.
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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This is not positive information - but- I believe the 1971 and up engines had the dished top pistons to lower the compression ratio so using the heads with flat top pistons would give a fairly high C.R.
Gene Schneider
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Joined: Mar 2009
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Backyard Mechanic
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OP
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Hi :dandyd
I did a double check on the #'s and is #336882, I have found the #333882 heads on line, but can't find any info on the #336882 heads.
It has me stumped.
Keeping vintage Chevy alive.
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Joined: Jul 2006
Posts: 388
Backyard Mechanic
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Backyard Mechanic
Joined: Jul 2006
Posts: 388 |
Hi :dandyd
I did a double check on the #'s and is #336882, I have found the #333882 heads on line, but can't find any info on the #336882 heads.
It has me stumped.
Keeping vintage Chevy alive. Jay, The 336 series head casting numbers are for big blocks.The number you have must be a mis cast 333882 head.Assuming this and if your 70 350 cnv motor still has the stock rotating assembly it will have 9:1 compression ratio.The 333882 head has a 76cc as does a stock 70 head.So your comp ratio using info here will still be 9:1,which is lower than you want. Jim
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Joined: Mar 2009
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Backyard Mechanic
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Thank's jimpala70
This is great, I was kinda thinking that the head was a one off, haveing the 336882 numbers, being a small block.
I'll check out some new pistons, mabey I could raise the compression this way, any ideas which may help bring this compression up without a major rebuild?
The rotating assembly is original and in great shape for the year.
Keeping vintage Chevy alive.
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Joined: Jul 2006
Posts: 388
Backyard Mechanic
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Backyard Mechanic
Joined: Jul 2006
Posts: 388 |
Thank's jimpala70
This is great, I was kinda thinking that the head was a one off, haveing the 336882 numbers, being a small block.
I'll check out some new pistons, mabey I could raise the compression this way, any ideas which may help bring this compression up without a major rebuild?
The rotating assembly is original and in great shape for the year.
Keeping vintage Chevy alive. Hey,most of us in the VCCA like our vehicles stock,Jay<vbg>.Just kidding.Without knowing what you are trying to accomplish I do not understand why you wish to raise compression.Other more efficient ways of increasing performance while burning today's fuel would be through cam/valve train, ignition upgrades and fuel system/carb.Just my thoughts.Jim
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Joined: Mar 2009
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Backyard Mechanic
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Hi:Jim
I pulled this motor out of an old Caprice that was going to the scap yard, Car was beyond resto (rust bucket/swiss cheese)., but had low miles on the motor, and still running.
I have a 1967 Chevrolet CST short box truck with a dead 283 in it,and want to put the 350 in it's place.
I would like to refresh this motor to get a little more bang for the buck, but still keep it as close to stock.
Keeping vintage Chevy alive.
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