Block Decoding - A little help ..........
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Intermediate
Joined: Nov 2005
Posts: 34
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Block Decoding - A little help ..........
Hello all,
I know for a fact that my engine was replaced in my 73, and I have been working on decoding the numbers on the current engine. If I'm on the right track feel free to let me know!!
Casting #3970010 - 350 CI 69 - 80
Date code ( located on passenger side toward rear of block) - E22
E - May, 2 - 2nd day, 2 - year of decade (1972 I guess)
Stamped code (located on block just in front of passenger side valve cover, was painted over and hard to distinguish first two characters)
- V 05 03 TRH
V- Flint Missouri
05 - May
03 - 3rd day of month
TRH - ??
This is my first attempt at decoding a block so, any confirmation would be greatly appreciated. You guys have been a great resource, thanks.
I know for a fact that my engine was replaced in my 73, and I have been working on decoding the numbers on the current engine. If I'm on the right track feel free to let me know!!
Casting #3970010 - 350 CI 69 - 80
Date code ( located on passenger side toward rear of block) - E22
E - May, 2 - 2nd day, 2 - year of decade (1972 I guess)
Stamped code (located on block just in front of passenger side valve cover, was painted over and hard to distinguish first two characters)
- V 05 03 TRH
V- Flint Missouri
05 - May
03 - 3rd day of month
TRH - ??
This is my first attempt at decoding a block so, any confirmation would be greatly appreciated. You guys have been a great resource, thanks.
Advanced
Joined: Nov 2005
Posts: 68
Likes: 0
From: Portland OR
Originally Posted by LittleJake
3970010 302/350 69-79 145-370hp car & Truck 2 & 4-Bolt Most common block
Suffix code TRH 72 350 Truck 175hp LS-9 4-Brl C-20 & C-30
Suffix code TRH 72 350 Truck 175hp LS-9 4-Brl C-20 & C-30
V0510CHC So looks like: Flint/May/10/???
18L607159 Also on Front any ideas?
Melting Slicks
Joined: Jan 2006
Posts: 2,664
Likes: 1
From: Nashville TN
CHC engine suffix codes were used many years. Below are the possible applications:
CHC 73 307 Nova 115 L-14 TH 350 2-Brl A.I.R.
CHC 73 307 Chevelle 115 L-14 TH 350 2-Brl A.I.R.
CHC 75 350 Corvette 210 L-82 4-spd 4-Brl
CHC 78 350 Camaro 170 LM-1 TH 350 4-Brl
CHC 80 350 Impala 190 LM-1 TH 350 4-Brl
CHC 88 305 Camaro 220 LB-9 700R 4-Brl
If you have a 75 Corvette and the engine is original this is probably you:
CHC 75 350 Corvette 210 L-82 4-spd 4-Brl
CHC 73 307 Nova 115 L-14 TH 350 2-Brl A.I.R.
CHC 73 307 Chevelle 115 L-14 TH 350 2-Brl A.I.R.
CHC 75 350 Corvette 210 L-82 4-spd 4-Brl
CHC 78 350 Camaro 170 LM-1 TH 350 4-Brl
CHC 80 350 Impala 190 LM-1 TH 350 4-Brl
CHC 88 305 Camaro 220 LB-9 700R 4-Brl
If you have a 75 Corvette and the engine is original this is probably you:
CHC 75 350 Corvette 210 L-82 4-spd 4-Brl
