Re: 1967, 390 hp. Oil pressure gauge question
Hi Joe- Excellent info, but our specs only 'suggest' the gauge that was used on the production line. I believe the instrument cluster was an 'assembly' item... so we may never know the exact assembly instructions/procedures, for the given years.
As for the Info Kits, I did mention that there were some previous mistakes (thatz a given). I believe the images/data that I posted came from various sources... as they were in totally different sections. The images with the black rectangular 'LUBRICATION' specs come from the Passenger Car Specifications book that was put out by the Chevrolet Engineering Center (my 1966 book is dated Sept 1965 - similar to the Info Kits). The other images came from the AMA specs (I have three different dated AMA specs for 1966). I honestly don't know which came first... the chicken, or the egg. I'd speculate that the AMA specs came from Chevy supplied data... but I wouldn't bet the farm on it.
In addition, the Finger-Tip Facts for 1966 & 67 have a lubrication section for each engine... for the 390, both years list "Gear-type oil pump with fixed intake develops normal 50-75 p.s.i. oil pressure at 2000 engine rpm". This does NOT mean the data was absolutely korrect... and we know multiple changes have occurred during production. The books/data/specs were updated during the years... perhaps those changes took a while to be reflected in the instrument cluster assemblies. Highly original vehicles seem to tell the best story.
Respectfully,
Jack
Hi Joe- Excellent info, but our specs only 'suggest' the gauge that was used on the production line. I believe the instrument cluster was an 'assembly' item... so we may never know the exact assembly instructions/procedures, for the given years.
As for the Info Kits, I did mention that there were some previous mistakes (thatz a given). I believe the images/data that I posted came from various sources... as they were in totally different sections. The images with the black rectangular 'LUBRICATION' specs come from the Passenger Car Specifications book that was put out by the Chevrolet Engineering Center (my 1966 book is dated Sept 1965 - similar to the Info Kits). The other images came from the AMA specs (I have three different dated AMA specs for 1966). I honestly don't know which came first... the chicken, or the egg. I'd speculate that the AMA specs came from Chevy supplied data... but I wouldn't bet the farm on it.
In addition, the Finger-Tip Facts for 1966 & 67 have a lubrication section for each engine... for the 390, both years list "Gear-type oil pump with fixed intake develops normal 50-75 p.s.i. oil pressure at 2000 engine rpm". This does NOT mean the data was absolutely korrect... and we know multiple changes have occurred during production. The books/data/specs were updated during the years... perhaps those changes took a while to be reflected in the instrument cluster assemblies. Highly original vehicles seem to tell the best story.
Respectfully,
Jack
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