BBC engine code - Chevelle Tech
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post #1 of 3 (permalink) Old Feb 7th, 19, 7:29 PM Thread Starter
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BBC engine code

I have a chance to pick up a bbc block and heads this week for 250.00
The guy claims it’s from a 70 chevelle but I don’t think so from the info I’m looking at. Just seeing if anyone can help me.
The block is a 3969854 and has T0320CLB and the heads are casted 3993820. Thanks for any help.
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post #2 of 3 (permalink) Old Feb 7th, 19, 7:46 PM
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Ole
 
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Re: BBC engine code

This block and heads are from 1971. The block is an LS3 402/300HP. Heads were open chamber 113 cc oval port variety, used on 402 and 454 engines. Engine was assembled on March 20, 1971.
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post #3 of 3 (permalink) Old Feb 8th, 19, 4:51 AM
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Brian
 
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Re: BBC engine code

3969854 block was used from '69 - '72 for 396 and 402. CLB shows up as the following:
CLB 1972 396 210 Monte Carlo LS-3
CLB 1971 396 300 Monte Carlo LS-3
CLB 1972 402 210 Monte Carlo LS-3
CLB 1972 402 240 Camaro LS-3
CLB 1972 396 240 Camaro LS-3
CLB 1972 396 240 Chevelle LS-3
CLB 1971 402 300 Monte Carlo LS-3
CLB 1972 402 210 Chevrolet LS-3
CLB 1972 402 240 Chevelle LS-3
CLB 1971 396 300 Chevelle LS-3
CLB 1972 396 210 Chevrolet LS-3
CLB 1971 402 300 Chevelle LS-3
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