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Old 08-01-2017, 09:33 PM   #1
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Engine ID help

the current engine in my truck has these numbers stamped in the block and I cant find anything like this any where can someone help me out?
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Old 08-01-2017, 09:37 PM   #2
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Re: Engine ID help

look on the back of the block behind ds head for the numbers cast into the block...where are those numbers in the pic?
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Old 08-01-2017, 11:34 PM   #3
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Re: Engine ID help

It's a 1983 305 with a 4BBL.
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Old 08-02-2017, 10:45 AM   #4
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Re: Engine ID help


V,, Flint engine plant
0401 (April 1st (yes april fools day) the year is decoded from the letter code.

1983 305 cu. in.
Roch E4ME carb.
Engine VIN 'H' (designated the LG4 145HP)
4bbl carb
Instaled in F B G body chassis

From the partial VIN in the (1G...) block it was installed in a G body

(from wikipedia)

This "G" body family consisted of:

Buick Regal (1978–1987)
Chevrolet El Camino (1978–1987)
Chevrolet Malibu (1978–1987)
Chevrolet Monte Carlo (1978–1988)
GMC Caballero (1978–1987)
Oldsmobile Cutlass Supreme (1978–1988) note: 1988 model known as Cutlass Supreme Classic
Oldsmobile Cutlass Cruiser (1982–1983)
Oldsmobile Cutlass Salon (1986–1987)
Pontiac Bonneville (1982–1986)
Pontiac Grand Prix (1978–1987)

In 1982, the Chevy Malibu/Pontiac LeMans coupes were dropped along with the Buick/Olds fastbacks. 1983 was the last year for wagons and Chevy Malibu sedans, leaving the G-Special coupes, B-O-P formal-roof sedans and the Chevy El Camino/GMC Caballero. In 1988, most remaining G-body models were moved to the new front wheel drive GM W platform, although the Pontiac Bonneville moved to the H-body, the El Camino was dropped without replacement.
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Old 08-02-2017, 07:07 PM   #5
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Re: Engine ID help

Well that's disappointing...... the other numbers that were on the DS rear of the block, were GM 5.0LG that's it I took pics of those last night in the dark and they weren't very good so I checked as soon as I got home from work and confirmed. And here I was thinking it had the original motor. Well at least I have a good Goodwrench 350 sitting on my engine stand waiting to be freshened up. Why on earth would someone put a weak engine in a 3/4 ton 4x4????
Thanks guys for making my day (LOL)
When I seen the numbers on the back of the block I had a feeling it wasn't going to be good news.
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