1971 LT-1 engines

[Mike M.]

its a 010 cast date with CJK suffix and no vin stamping on its pad. the engine came from the st catherines ontario engine assembly plant9 THERE IS A K AT THE BEGINNING OF THE MACHINE ASSEMBLY STAMPING.. were any 71 corvette LT1's born with a block cast in canada? mike

[Joe L.]

Re: 1971 LT-1 engines

its a 010 cast date with CJK suffix and no vin stamping on its pad. the engine came from the st catherines ontario engine assembly plant9 THERE IS A K AT THE BEGINNING OF THE MACHINE ASSEMBLY STAMPING.. were any 71 corvette LT1's born with a block cast in canada? mike

Mike-----

I don't know if there were any 1971 LT-1's built with a Canadian-manufactured engine. I doubt it, but I could not say for sure. However, the "CJK" suffix code was not used for LT-1 engines. It was used for the 1971 Corvette base engine. My guess would be, given that there is no VIN derivative stamping, that this engine was a SERVICE engine for 1971 Corvettes with base engine. It is very plausible that such a SERVICE engine could have been Canadian-manufactured.

[Mike M.]

Re: 1971 LT-1 engines

joe: thanks much. u are correct, the cjk suffix is the 270 HP base engine. thanks,mike

[Michael W.]

Re: 1971 LT-1 engines

CJK was also used for Monte Carlo and Chevelle in 1971. Base engine, not LT1.

[Joe L.]

Re: 1971 LT-1 engines

CJK was also used for Monte Carlo and Chevelle in 1971. Base engine, not LT1.

Mike------


The only other CJK code I can find was for 1970 Chevelle and El Camino but it was for a 402 big block.

[Terry M.]

Re: 1971 LT-1 engines

its a 010 cast date with CJK suffix and no vin stamping on its pad. the engine came from the st catherines ontario engine assembly plant9 THERE IS A K AT THE BEGINNING OF THE MACHINE ASSEMBLY STAMPING.. were any 71 corvette LT1's born with a block cast in canada? mike

Mike
Check the cylinder case date code. Some engine suffix codes were reused several years later for non-Corvette applications. I don't have all my data here on-the-road so I can not tell you if CJK was one of those codes that was recycled, but I have found some over the years.

[Michael W.]

Re: 1971 LT-1 engines

Mike------


The only other CJK code I can find was for 1970 Chevelle and El Camino but it was for a 402 big block.

I was going by this info

http://www.nastyz28.com/gm-chevy-codes/chevy-engine-codes-suffix-2.php

a site which is usually quite credible, but I see they repeat the myth that CJK was 330HP LT-1.

Dunno.

[Joe L.]

Re: 1971 LT-1 engines

I was going by this info

http://www.nastyz28.com/gm-chevy-codes/chevy-engine-codes-suffix-2.php

a site which is usually quite credible, but I see they repeat the myth that CJK was 330HP LT-1.

Dunno.

Mike------


They're definitely wrong on this one. For one thing, they say it was a Turbo 400 engine application. No Corvette LT-1 ever was equipped with a Turbo 400. For another thing, they say it was used for Corvette, El Camino, and Chevelle. No El Camino or Chevelle ever used an LT-1. For yet another thing, there could not have been any engine that was used across Corvette, Chevelle, and El Camino models. That's because an engine used in a Corvette would have been configured differently (e.g. exhaust manifolds) than one used in a Chevelle or El Camino. For any given model year, a particular suffix code defines a particular engine configuration. So, the same code could not have been used for Corvette and Chevelle/El Camino even if the engines were for the same RPO code (e.g. L-48).

[Mike M.]

Re: 1971 LT-1 engines

there is no cast date code on the block where i'm used to looking for it(pass side of bell housing flange). where would u expect to find the date code? have fun in texas. mike

[Michael W.]

Re: 1971 LT-1 engines

there is no cast date code on the block where i'm used to looking for it(pass side of bell housing flange). where would u expect to find the date code? have fun in texas. mike

This is further evidence that this is a McKinnon cast and assembled engine. I remember Scott Sinclair once showing me where to find the date on these engines but that was after some adult bevvies and I have forgotten. Maybe drop him a note?

[Mike M.]

Re: 1971 LT-1 engines

i wonder if all canadian cast sbc's didn't get the vehicle vin # standee on the pad once they arrived at the assembly plants? did the canadian engines get shipped to the USA for assembly plants here?

[Michael W.]

Re: 1971 LT-1 engines

I believe the VIN was stamped at all GM assembly plants in Canada. My last visit to the St. Therese plant was in 1971 and it was being done then.

McKinnon engines have turned up in Australian built Holdens and many US built Studebakers, not sure which US built GM products might have gotten them.

[Terry M.]

Re: 1971 LT-1 engines

there is no cast date code on the block where i'm used to looking for it(pass side of bell housing flange). where would u expect to find the date code? have fun in texas. mike

I will ask Scott later. The Road Tour festivities just ended and everyone is too relaxed for serious conversation. Maybe when I next see him circumstances will be better, if I remember.

No Maryland Missle at the convention? Damn I had some professional questions for you that I forgot in Indianapolis. Next time -- Altoona.

[Mike M.]

Re: 1971 LT-1 engines

the maryland misfire( as dennis clark previously referred to me) will be at altoona. you should seek a professional for professional questions. mike

[Terry M.]

Re: 1971 LT-1 engines

the maryland misfire( as dennis clark previously referred to me) will be at altoona. you should seek a professional for professional questions. mike

Oh I know ALL the names Dennis called you. We are all in this together. I have already consulted a professional, but even though you are retired I trust your opinion more than others. We'll talk in Altoona.