Did the '68 327/ 275 hp (L30/M20) come with a 5000 or 5500 redline tachometer? I've got conflicting info...

5000 rpm. L34 & L35 396 was 5500 rpm.

According to Rick's First Gen Camaro parts catalog, the 1968 327/210 had the 5000 redline and the 327/275, 350/295, 396/325-350hp had the 5500 redline. I trust Rick's...

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1968 Coupe, 327/210hp project in process.
PS/PB, Factory AC

I prefer to trust the 1968 Camaro Assembly Instruction Manual. Option U17:

6468713 tach & clock asem
6468714 RPO L34 & L35
6468715 RPO L78 & Z28

All engines not listed used 6468713; 5000 rpm.

Correct, only the low power (non L78) 396's had the 5500. No non Z/28 small blocks in 67-69 had a tach higher than the 5000 redline