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#1 |
Registered User
Join Date: Sep 2002
Location: Burlington, WA
Posts: 298
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1970 396 Question
I just got a 1970 Big Block 3/4 ton truck, What I have read, it should be a 402, but the glove blox says 396 option code L47.
Is the 396 correct?, or should it be a 402? and what is the HP ratting? Since the body is rusty, we thinking about putting it in a 68 Camaro body.
__________________
1971 GMC Sierra 3/4 Ton 4x4 1972 Chevrolet SWB 4x4 RIP LeRoy |
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#2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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In the trucks, GM made things real confusing.
The engine ios a 402. The option is for a 396. The fender badge says 400. The 396 and 402 are closer related than the other big blocks, the 402 is nothing more than a 30 over 396. There's many storys as to why, and they range from fire/flood damaged blocks to improperly bored blocks that ended up getting rebored, and inner office politics...just to name a few. Personally, i buy into the politics one.... GM couldn't have a small block being bigger than a big block, and in 70, the 400 small block was born. So they gave the 396 a quick shave and a hair cut and were pleased. However, in the high perfomance circles, the 396 had quite a following, and becouse of this, there were many 402 engines badged as 396 in the cars. Confusing huh? |
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#3 |
Registered User
Join Date: Sep 2002
Location: Burlington, WA
Posts: 298
|
Great info.
I will check the bore when the motor is pulled. Thanks, 72BOB
__________________
1971 GMC Sierra 3/4 Ton 4x4 1972 Chevrolet SWB 4x4 RIP LeRoy |
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