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Old 02-28-2013, 07:18 PM
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Help decode my chevy motor

hello to all i just got me a 66 chevy convertible and wanted to check the info on the motor,i have looked up a few sites but cant seem to figure out what it is for sure the back of the block number is 3970010 its telling me its a 68-79 327 or 350? wanted to know for sure wich 1 it is and te front numbers are v0510tru does this tell me is it out of a truck??? any help would be greatfull thanks much

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Old 02-28-2013, 07:29 PM
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can you take a picture of the balancer.
many 327s used a less beefy balancer than the 350.
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Old 02-28-2013, 07:49 PM
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Check the suffix number....That is on the pad right in front of the passenger side head....Look them up here

How to decode Chevy Engine Codes
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Old 02-28-2013, 08:04 PM
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It is a 350 by code should be a 4 bolt main truck engine.68 was the ONLY year for a large jornal 327, ,3.25 stroke a 350 3.48 stroke ,same block.
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Old 02-28-2013, 08:09 PM
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Originally Posted by vinniekq2 View Post
can you take a picture of the balancer.
many 327s used a less beefy balancer than the 350.
ill try to get a pic tomarrow
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Old 02-28-2013, 08:13 PM
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Originally Posted by poncho62 View Post
Check the suffix number....That is on the pad right in front of the passenger side head....Look them up here

How to decode Chevy Engine Codes
o is this v0510tru my suffix code? if so having trouble finding it??
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Old 02-28-2013, 08:14 PM
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Originally Posted by 496CHEVY3100 View Post
It is a 350 by code should be a 4 bolt main truck engine.68 was the ONLY year for a large jornal 327, ,3.25 stroke a 350 3.48 stroke ,same block.
hey 496 chevy so you for sure its a 350 truck motor 4 bolt??
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Old 02-28-2013, 11:13 PM
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Originally Posted by CHEVY 64 View Post
hello to all i just got me a 66 chevy convertible and wanted to check the info on the motor,i have looked up a few sites but cant seem to figure out what it is for sure the back of the block number is 3970010 its telling me its a 68-79 327 or 350? wanted to know for sure wich 1 it is and te front numbers are v0510tru does this tell me is it out of a truck??? any help would be greatfull thanks much
"V" indicates the Flint assembly plant, "0510" are day/month date codes. The suffix code is TRU. Using the suffix code along w/the casting number (3970010) and the casting date code (unknown at this point) will narrow it down quite a bit. The date code is back by the bellhousing flange, adjacent to or opposite of the casting number in most cases.

Many data bases do not include all the truck suffix codes, so it's not at all uncommon for one to not show up. Just be sure the suffix is actually what you think it is, they can be hard to read sometimes.

The large journal 327 was only used briefly, the vast majority of c/n "010" blocks are 350ci from the factory, although you can put different stroke cranks in them- the factory used 3", 3.25" and 3.48" stroke cranks and the aftermarket has supplied many others, including the popular 3.75" "SBC 383 stroker" crank.

As far as for buying parts, etc., the important things to know are the block has a 4" nominal bore diameter, it has a 2-piece rear main seal, a 2.45" main journal diameter, the dip stick is on the driver side of the block. The 010 block was never used w/a factory roller cam. It may be a 2- or 4-bolt bottom end, 4-bolts are commonly found in trucks/vans/buses as well as some high performance passenger car applications.

See ID Chevy engines for more info.
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Old 03-01-2013, 05:31 PM
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Originally Posted by vinniekq2 View Post
can you take a picture of the balancer.
many 327s used a less beefy balancer than the 350.
HERS THE PIC
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Old 03-01-2013, 05:32 PM
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Originally Posted by cobalt327 View Post
"v" indicates the flint assembly plant, "0510" are day/month date codes. The suffix code is tru. Using the suffix code along w/the casting number (3970010) and the casting date code (unknown at this point) will narrow it down quite a bit. The date code is back by the bellhousing flange, adjacent to or opposite of the casting number in most cases.

Many data bases do not include all the truck suffix codes, so it's not at all uncommon for one to not show up. Just be sure the suffix is actually what you think it is, they can be hard to read sometimes.

The large journal 327 was only used briefly, the vast majority of c/n "010" blocks are 350ci from the factory, although you can put different stroke cranks in them- the factory used 3", 3.25" and 3.48" stroke cranks and the aftermarket has supplied many others, including the popular 3.75" "sbc 383 stroker" crank.

As far as for buying parts, etc., the important things to know are the block has a 4" nominal bore diameter, it has a 2-piece rear main seal, a 2.45" main journal diameter, the dip stick is on the driver side of the block. The 010 block was never used w/a factory roller cam. It may be a 2- or 4-bolt bottom end, 4-bolts are commonly found in trucks/vans/buses as well as some high performance passenger car applications.

See id chevy engines for more info.
good info so the suffix code tru is that short for truck??
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Old 03-02-2013, 12:15 AM
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good info so the suffix code tru is that short for truck??
No. The codes are not abbreviations. The suffix TRU might be a truck application, but it's just a coincidence.
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Old 03-02-2013, 12:53 PM
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I see, but im still having trouble finding what the suffix code comes out to be????
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Old 03-02-2013, 01:02 PM
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I cant find a tru suffix code...Where are you getting that from?...Is it on the pad in front of the head?
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Old 03-02-2013, 01:16 PM
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Yes its on the passenger side,let me snap a pic so you can see
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Old 03-02-2013, 01:20 PM
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IM SORRY ITS TRJ, IT LOOKED LIKE A U SO SINCE WE GOT THAT CLEARED WHAT IS THIS MOTOR EXACLY
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