Re: Official Difference btween the 396 and 402 BB Because you asked.
Interesting thread ...
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Re: Official Difference btween the 396 and 402 BB Because you asked.
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It is indeed interesting to see everyone's point of view on this subject. As it seems we are not closer to answering the question at hand. As the answers sound more like theories than reavent facts. |
Re: Official Difference btween the 396 and 402 BB Because you asked.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
I would just tell a person my truck came with a 396. I bored it .020 over and got the fender badges. Then I bored it another .010.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
Lets say the 402 is the Covette version of the 396 which makes it a Corvette Optioned truck :lol: Just a thought ;)
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Re: Official Difference btween the 396 and 402 BB Because you asked.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
It was actually just marketing. There is no difference in the bore or otherwise. Think about the motorcycle market. They always fudge the cc to something that makes sense or keeps up with the competition. The Ford engineers were winning, so GM played a few tricks from year to year while they were in development of better engines. It was easy to fudge from 396 to 402 at a time when they were introducing the 400 small block. Workers on the factory floor were given liberty to liquidate emblems in batches. As long as they were in line with the models produced. There were no ISO standards back then. Just well kept factories.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
To further ad, it was commonplace for people to say the 302 was built with off the shelf parts to fit into the scca rules of 305 cubic inches. The crank was NOT just a 283 crank off the shelf. Maybe for R&D purposes it was stuffed in, but the crank in an actual 302dz engine is different than that of your 64 Nova, or C10, or anything else that had a 283. I did a lot of research on that motor as I wanted to replicate one and put it in my 69, until I found it was just not a safe reliable motor to use in a DD or even a weekend driver. Also, it's hard to believe there were any actual changes to the 396 castings when Chevrolet was so honest about the horsepower and torque numbers these motors produced!!!! All these stories sure are informative and entertaining though! Love hearing it all as I wasn't alive during the muscle car era.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
What's a 60 over 396 ? 408 .. right ? Just thought one of you guys might know.
I think that's right. Kind-of a hijack, kinda not :D |
Re: Official Difference btween the 396 and 402 BB Because you asked.
I am so glad my 70 came with a 350 and the matching badges. Of course it needed the Olds 425 in it then bored .030" over making it 431 but I can't find 429 badges except on F***.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
OK, my two cents. This is what I was told by a local chevy dealer who had had his dealership since the early 50's. It started with a bunch of flawed castings, GM decided to use this to their advantage in marketing a larger engine. They made 402 emblems for the vehicles but then California threw a monkey wrench in things with a new Smog Law. Any motor over 400cid had a more stingent smog requirement so GM decided it was easier to call it a 396 in the cars(use old emblems) and 400 in the truck. Cheaper to make a 400 emblem for the truck than put smog on it.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
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Re: Official Difference btween the 396 and 402 BB Because you asked.
So my 72 K20 came with a 350. I pulled a BBC 396 out of a 69 C30 years ago, had it rebuilt to be a 402 and it's now in my K20. I went with the 8 396 repro badges. Will post pics when I get them installed. Could have bought the 8 400 badges but I figured folks would think it had a small block 400 which it doesn't have. :chevy:
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