72 Big Block Engine suffix
Thread Starter
Safety Car
Joined: Mar 2007
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From: Blairsville , Georgia
72 Big Block Engine suffix
I just bought a 72 BB with its original engine and the suffix is CSR. It is a 4 speed and the "R" is for Air Injector Reactor. I know what that system looks like on the midyears but not on the C3's. Can someone please post a picture of a 454 with the AR system.
Thanks
Jay
Thanks
Jay
Thread Starter
Safety Car
Joined: Mar 2007
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From: Blairsville , Georgia
I guess that means that I am missing the smog stuff then since it looks like a midyear. Does that mean that it was originally a California car?
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The 70-72 NCRS Judging Guide explains the AIR system, finishes, etc. The 72 assembly instruction manual (AIM) has assembly diagrams and lists the parts and parts numbers for what you're looking for.
Pics here, but there are also pics of cars with AIR removed.
Pics here, but there are also pics of cars with AIR removed.
Thread Starter
Safety Car
Joined: Mar 2007
Posts: 4,689
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From: Blairsville , Georgia
I do not have any paperwork or documentation. I just bought this car to resell as I am very close to buying a 70 convertible. This was just a purchase opportunity through a family friend that I could not pass up. Whoever buys it is going to get a very nice original driver quality car.
Thanks to everyone for explaining the AIR system. It has been removed from this car.
Thanks to everyone for explaining the AIR system. It has been removed from this car.
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All 72 big blocks, whether to California or not, had AIR systems. CSR indicates 454 with MT. All 72's had 3-letter engine suffixes. Your car was not necessarily delivered to California. Here are some pics of original AIR system on 72 CSR motor. Belts are wrong, plastic tie is wrong.
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Racer
Joined: Jun 2010
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My system is off my car right now. If you want a complete set of pictures, send me your private e-mail in a PM and I will send you over aset of pictures.
I have a extra smog set=up for an early built 72, 454 if you need some parts.
An LT-1 set-up as well.
I have a extra smog set=up for an early built 72, 454 if you need some parts.
An LT-1 set-up as well.
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There's then a footnote stating that California cars also had a slightly different cam grind with greater valve overlap, called out as RPO NB2 which included K19.
Putting 2 and 2 together and getting 5, would the CSR represent the NB2 config for Califonia, or the more common 49 state version? Dunno.
Last edited by Mike Ward; Mar 4, 2013 at 11:03 PM.
Thread Starter
Safety Car
Joined: Mar 2007
Posts: 4,689
Likes: 659
From: Blairsville , Georgia
All 72 big blocks, whether to California or not, had AIR systems. CSR indicates 454 with MT. All 72's had 3-letter engine suffixes. Your car was not necessarily delivered to California. Here are some pics of original AIR system on 72 CSR motor. Belts are wrong, plastic tie is wrong.,
,
,
,,,
Thread Starter
Safety Car
Joined: Mar 2007
Posts: 4,689
Likes: 659
From: Blairsville , Georgia
Thank you so much for the offer for the smog setup. I will be selling this car very soon so I do not think that I will tackle that job.
Thread Starter
Safety Car
Joined: Mar 2007
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From: Blairsville , Georgia
Thanks guys for all of the great inputs and pictures. I hope that someone on this forum buys this car because it is a nice car. I am doing a few things to it now but I will be done in a week or so and then away she goes so that I can hopefully but the 70 convertible that I am really after.
I only bought this 72 because it was from a family friend who did not want to deal with the public selling it. She knows that I bought it to resell.
I only bought this 72 because it was from a family friend who did not want to deal with the public selling it. She knows that I bought it to resell.
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