09-12-2014, 04:28 PM | #19 |
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Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: OEM tach with V8???
Since you really can't read them fine enough to do a proper tuneup, I ordered a low-rpm tach from Amazon. It looks like the old Sunpro units but its super cheap - and made like it. It has scales for 6 cyl and 8 cyl (and 4 too I think) so you'd be able to just compare what it says and see which scale it matches.
If its a 6 cyl you could probably trade it for two 8s, or sell it. Who would have ordered a tach with an inline 6? Truck guys I suppose, surely not a perf concern. But for guys with 6 bangers I imagine the factory tachs are hard to find. And probably not reproduced so far as I remember. Under $30: Amazon.com: Actron CP7605...
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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