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Engine Tliming for 1966 327/300hp Auto Trans

Ron Miller

Well-known member
Joined
Aug 23, 2003
Messages
494
Location
Southeast Missouri
Corvette
'66 Auto Mosport Conv, '65 Nass Blue 4-sp Air Cpe
Engine Timing for 1966 327/300hp Auto Trans

Wlhat is the correct ignition timing (initial timing advance) for this engine/transmission combination? I've got two different aftermarket books that show two different timings. One even shows that the 300 hp engine is timed differently with an automatic transmission than with a manual. (This is for the non-air injected engine, assuming there was one in 1966).

Any knowledge out there, I'm sure it's in the owner's manual that I have, but these things sometimes get superceded by later data put out by GM to correct specific problems as they arise.

Any Information?
 
Joined
Jan 1, 2002
Messages
7,246
Location
Washington, Michigan
Corvette
'67 Marina Blue Convertible
I don't have '66 data, but the '67 327/300hp number (owner's manual and '67 Shop Manual agree) is 6* BTDC (same for manual and Powerglide). With A.I.R., it's 4* ATDC with Powerglide and the #1111117 distributor.

:beer
 

Ron Miller

Well-known member
Joined
Aug 23, 2003
Messages
494
Location
Southeast Missouri
Corvette
'66 Auto Mosport Conv, '65 Nass Blue 4-sp Air Cpe
Thanks for the quick reply, John. That should work for me, too.
 

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