1971 LS6 Chevelle SS Production

[Geoff Padgett]

Hello
I felt that i must reply to this one. The engine that i currently run in my 70 LS-6 car was purchased many years back and is a 1972 crate LS-6 (all date coded) #289 block, #291 heads and was never taken apart when i got it, hell it is still the standard bore with the O.G. pistons, crank, manifold. the only thing that i did when i rebuilt it was grind the crank 10/10 CRR on the deck with no Vin # just thought i would reply. Geoff.

[Vinko M.]

Geoff...I'll add to your post as well. I bought a 454 long block engine off a friend of mine this past fall. It too was a 289 block 291 heads and also has CRR deck stamping and no vin #. He's had it for at least 20+ years just collecting dust and was never decked or rebuilt. I'll have to take a better look at it when I return home from Afghan-land in a month or two. It just seemed really odd about the motor and the stampings but this may shed some light....Thanks

[BUIZILLA]

Vinko, when you get to it, there is a small machined pad right above the timing cover, center of the block, see if a 6 digit number isn't stamped there... no letters just numbers...

[L78steve]

Back in 75 or 76 at my High School in Greenwich CT. was a Light Blue,White stripes and Int. 71 LS6 equipped Chevelle.Was it the real deal? I can't say. Didn't know about checking numbers back then but did have a good look at the car and I believe it was genuine.

[markjohnson]

Yeah, I have one of those 1972-dated "CRR" LS-6 engines also that has no VIN up front. I've had mine for several years and have actually ran across several in my travels. I'll check mine for this number up front. Another member, Tirebird, also has one of these 1972 CRR LS-6 engines. They are kinda rare in the fact that they are 4-bolt "289" blocks, but I believe they are just crate engines. Why Tonawanda chose to stamp these with the 1970 TH400 code of "CRR", instead of the usual "CE", I don't know. They were complete engines including intake manifold and were just covered with 1972 casting dates on everything including the closed chamber "291" cylinder heads. Crate LS-6's were known for having Open chambered heads so this short run of accurate "1970 Close Chamber'ed LS-6's" are kind of interesting. Actually it would be kinda neat to put one into a 1972 SS454 Chevelle and leave the experts scratching their heads!

[king_midas]

Once again, these engines were OTC available, and/or for warranty replacement.

Just because compression went down and gas prices went up doesn't mean that people stopped racing...

[Mr70]

[ QUOTE ]
Back in 75 or 76 at my High School in Greenwich CT. was a Light Blue,White stripes and Int. 71 LS6 equipped Chevelle.Was it the real deal? I can't say. Didn't know about checking numbers back then but did have a good look at the car and I believe it was genuine.

[/ QUOTE ]

I've always been a firm believer they never really assembled a Chevelle like this on the assembly line for public consumption during 1971,but you are about the 10th person in the last few years to mention this particular car and it's same details,and all are from NC.Sonny B. 1st told me about it 14 years ago,saying he saw it new on the lot with a W/S on the driverside rear stating LS-6.

I must admit,I'm kinda.....sorta...sloooooowly..starting to think maybe they did.

[SS454Elky]

The question I have had about my '71 for years is why would GM put a 6500 RPM redline tach in a hydraulic liftered car that could have been equipped with A/C (Mine does not have A/C). Wouldn't that be inviting all kinds of warranty issues from over revved engines? I mean obviously they did it, but is there some other rational I am missing? Why put in a tach that is obviously wrong?

[Mr70]

Don't judge a car by it's tachometer..They made miniscule mistakes like that occasionaly.
Just one example.
Chuck Hansons 1970 L-78 Chevelle cvt. was built with a 5500 redline tach,that was clearly a mistake,when it should've received a 6500.

[442w30]

[ QUOTE ]
[ QUOTE ]
Back in 75 or 76 at my High School in Greenwich CT.

[/ QUOTE ]

...but you are about the 10th person in the last few years to mention this particular car and it's same details,and all are from NC.


[/ QUOTE ]

He lives in NC, but he saw the car in the Nutmeg State.

I don't understand why everyone demands documentation when L89 Novas are mentioned, but the 1971 LS6 gets a free pass. The paper trail hasn't stopped, but it really hasn't started either.