I have a non original engine 67 SS with factory guages. I understand that the red line on the tach determines what HP engine was originally in the car. Does anyone know the 325-350-375 HP red line differences to help me determine which engine I should be looking for to match originality? Also, the body build date is the 1st week of Oct 67. Which engine build date months would be considered accurate based on my body build?

Mark, I'm not a numbers guy but I do know that 67 was a bummer year for supplying the old Chevelle SS line with venerable rats. I'd check the reference section here on this to be doubly sure.

That's why so many 427's wiggled their way between the fenders of 67's,

[This message has been edited by Gene Chas (edited 01-12-2000).]

I would think that the redlines would be as follows. 5000rpm=325hp, 5500rpm=350hp, 6000rpm=375hp. They mad 612 375hp models My .03 worth

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69 SS 454
69 Malibu 406
ACES Member #3635

[This message has been edited by plain 69 (edited 01-11-2000).]

They did make a few 375hp in 67.What the redline diff are,I don't know.But I think the 375 didn't offer air conditioning. http://www.chevelles.com/forum/smile.gif

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John 67SS
ACES #2887
Team Chevelle Gold #127
Bassett,VA

My 1967 396/350 has a redline of 5500.

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Team Chevelle Gold Member #265
67 SS 396

Here is the breakdown of the tach applications for 1967.
325hp=5000rpm red line
350hp and 325 with A/C=5500rpm red line
375hp=6000rpm red line

They did make 375 hp 67 Chevelles, but less than 1000 where made.

mark, glad you asked. I learned something! Thnx.