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Old 06-16-2012, 09:06 AM
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1971 Heavy Chevy Chevelle

One of my buddies just bought a 1971 Heavy Chevy Chevelle with a 350 engine and trans the other day. I'm pretty sure the car is all original on the inside and outside but I have no idea about the engine and trans. I'm pretty new to this and so is he so I was wondering if anybody knew an easy way to figure out if the engine and trans is orginal from the factory or if it was even something they put in them to begin with.

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Old 06-16-2012, 09:13 AM
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Quote:
Originally Posted by Vberg
One of my buddies just bought a 1971 Heavy Chevy Chevelle with a 350 engine and trans the other day. I'm pretty sure the car is all original on the inside and outside but I have no idea about the engine and trans. I'm pretty new to this and so is he so I was wondering if anybody knew an easy way to figure out if the engine and trans is orginal from the factory or if it was even something they put in them to begin with.
Ayuh,.... Compare it's Numbers,...
Serial numbers,...
Castin' numbers,....
And of course, the build code numbers of the motor, on the starboard side, forward corner of the block's deck, just ahead, 'n slightly below the forward corner of the head...
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Old 06-16-2012, 12:25 PM
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My buddy owned one when I was a youngster, he bought it brand new and it was totaled a few months later, Haven't seen one since. It would be interesting to see how many were made and what they had for options. Keep us posted please.
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Old 06-16-2012, 12:31 PM
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here's some info: http://www.automotiveforums.com/t198...chevelle_.html

and this:Because SS models suffered heavy insurance surcharges, Chevrolet introduced the "Heavy Chevy" at midyear, which was based on the base Chevelle, and was available with any V8 engine except the 454, which was exclusive to SS models. The Heavy Chevy (RPO YF3) was ONLY available with the base Chevelle sport coupe (13437) and was primarily a dress up option and even it was limited to options available on the standard Chevelle sport coupe; no carpeting, no bucket seats, etc. For 1971, the SS option was reduced to one RPO code, RPO Z15, and was only available for the Chevelle Malibu. This RPO code required any optional engine and transmission available in the Chevelle lineup. Since the 307 V8 was the standard base V8 in 1971, it could not be ordered with the SS option; one had to order one of the two 350 V8 engines (L65 or L48), the LS3 402 or the LS5 454.
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Old 06-17-2012, 10:43 AM
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Thanks for the help! I'll have to take a look at it next time i see the car which probably won't be long cause I'm helping with the work.

I'm not sure how many were made but I've read around 6,000. I don't know if thats accurate though. This car is pretty sweet. Its original paint and runs sweet. The body is pretty rough. I can't wait to start doing stuff to it!
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