1965W29

Where can I find the tune up specifications for 1965 442 400.
Thanks

Steve

m371961

Why not the Oldsmobile CSM for the year of the engine?

oldcutlass

These will get you close:
http://www.tpocr.com/olds1.html

m371961

Excuse my ignorance, my 65 CSM doesn't show specs for the 400.

1965W29

Thanks for the info, poor mans was right on. I was going to use the 425 specs which are the same except as I see it the timing. Hope to help with bog on acceleration. Next vacuum advance or carb rebuild!!!!

Steve

MDchanic

Well, you are quite right. I couldn't find it either, just 225, 330, and 425.

The carburetor adjustments just generalize for 2GC and 4GC.

So, since they didn't print the 400 information in the September, '64 manual, where did they print it?

- Eric

oldcutlass

If your running an HEI, those specs won't work. Either way, I would set total timing as close to 34-36 as I could get it and let the initial wind up where ever it winds up. Then limit the total with vacuum to around 50.

Read this ( these principles are the same for all v8's):

http://www.corvette-restoration.com/.../Timing101.pdf

and this:

http://www.badasscars.com/index.cfm/...d=76/prd76.htm

1965W29

My 400 is totally stock with the 4GC carb.

oldcutlass

Read up on performance timing. You'll be pleasantly surprised that stock engines benefit from additional advance.

This is pretty good reading and pretty informative:
http://oldsjunction.classicoldsmobil...n.htm#Ignition

m371961

Not to hi-jack, but teach me sometin. Was the 400 a mid year thing?

To the OP- Is you accelerator pump working fully?

oldcutlass

The 400 was new for 65 as the 64 was a 330.

1965W29

Thanks to all for the info on 400 specs, dwell originally was 19 , set the dwell at 30, new points, condenser, new vacuum advance and new distributor advance kit. Acceleration greatly improved, still a little bog. Rebuilding the 4GS next, as I noticed the accelerator pump leaking a little.

Steve